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class="simpleShowMore__button">显示引用</button> </div> <h1 class="articleHeader__title">一个有效的转发能力评价方法在移动边缘计算机会卸载</h1> <div class="articleHeader__authors"> <span class="articleHeader__authors_author">王谦<a href="http://orcid.org/0000-0001-6513-1712" aria-label="Redirect to Doi" target="_blank" rel="noreferrer"><span role="img" class="anticon"> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 256 256" xml:space="preserve" width="1em" height="1em"> <path d="M256 128c0 70.7-57.3 128-128 128S0 198.7 0 128 57.3 0 128 0s128 57.3 128 128z" fill="#a6ce39"></path> <path d="M86.3 186.2H70.9V79.1h15.4v107.1zm22.6-107.1h41.6c39.6 0 57 28.3 57 53.6 0 27.5-21.5 53.6-56.8 53.6h-41.8V79.1zm15.4 93.3h24.5c34.9 0 42.9-26.5 42.9-39.7C191.7 111.2 178 93 148 93h-23.7v79.4zM88.7 56.8c0 5.5-4.5 10.1-10.1 10.1s-10.1-4.6-10.1-10.1c0-5.6 4.5-10.1 10.1-10.1s10.1 4.6 10.1 10.1z" fill="#fff"></path> </svg></span></a>,<sup>1</sup></span> <span class="articleHeader__authors_author"><strong>志鹏高</strong><a 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19.6-6.1-398.3 0-208.8.2-379.7.5-379.7S236.6 290.1 401 404z"></path> </svg></span></a><a href="http://orcid.org/0000-0002-0563-6396" aria-label="Redirect to Doi" target="_blank" rel="noreferrer"><span role="img" class="anticon"> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 256 256" xml:space="preserve" width="1em" height="1em"> <path d="M256 128c0 70.7-57.3 128-128 128S0 198.7 0 128 57.3 0 128 0s128 57.3 128 128z" fill="#a6ce39"></path> <path d="M86.3 186.2H70.9V79.1h15.4v107.1zm22.6-107.1h41.6c39.6 0 57 28.3 57 53.6 0 27.5-21.5 53.6-56.8 53.6h-41.8V79.1zm15.4 93.3h24.5c34.9 0 42.9-26.5 42.9-39.7C191.7 111.2 178 93 148 93h-23.7v79.4zM88.7 56.8c0 5.5-4.5 10.1-10.1 10.1s-10.1-4.6-10.1-10.1c0-5.6 4.5-10.1 10.1-10.1s10.1 4.6 10.1 10.1z" fill="#fff"></path> </svg></span></a>,<sup>1</sup></span> <span class="articleHeader__authors_author">库恩妞妞<a href="http://orcid.org/0000-0003-1877-5982" aria-label="Redirect to Doi" target="_blank" rel="noreferrer"><span role="img" class="anticon"> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 256 256" xml:space="preserve" width="1em" height="1em"> <path d="M256 128c0 70.7-57.3 128-128 128S0 198.7 0 128 57.3 0 128 0s128 57.3 128 128z" fill="#a6ce39"></path> <path d="M86.3 186.2H70.9V79.1h15.4v107.1zm22.6-107.1h41.6c39.6 0 57 28.3 57 53.6 0 27.5-21.5 53.6-56.8 53.6h-41.8V79.1zm15.4 93.3h24.5c34.9 0 42.9-26.5 42.9-39.7C191.7 111.2 178 93 148 93h-23.7v79.4zM88.7 56.8c0 5.5-4.5 10.1-10.1 10.1s-10.1-4.6-10.1-10.1c0-5.6 4.5-10.1 10.1-10.1s10.1 4.6 10.1 10.1z" fill="#fff"></path> </svg></span></a>,<sup>2</sup></span> <span class="articleHeader__authors_author">杨杨<a href="http://orcid.org/0000-0001-7848-5421" aria-label="Redirect to Doi" target="_blank" rel="noreferrer"><span role="img" class="anticon"> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 256 256" xml:space="preserve" width="1em" height="1em"> <path d="M256 128c0 70.7-57.3 128-128 128S0 198.7 0 128 57.3 0 128 0s128 57.3 128 128z" fill="#a6ce39"></path> <path d="M86.3 186.2H70.9V79.1h15.4v107.1zm22.6-107.1h41.6c39.6 0 57 28.3 57 53.6 0 27.5-21.5 53.6-56.8 53.6h-41.8V79.1zm15.4 93.3h24.5c34.9 0 42.9-26.5 42.9-39.7C191.7 111.2 178 93 148 93h-23.7v79.4zM88.7 56.8c0 5.5-4.5 10.1-10.1 10.1s-10.1-4.6-10.1-10.1c0-5.6 4.5-10.1 10.1-10.1s10.1 4.6 10.1 10.1z" fill="#fff"></path> </svg></span></a>,<sup>1</sup></span> <span class="articleHeader__authors_author">和Xuesong邱<a href="http://orcid.org/0000-0002-7899-539X" aria-label="Redirect to Doi" target="_blank" rel="noreferrer"><span role="img" class="anticon"> <svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 256 256" xml:space="preserve" width="1em" height="1em"> <path d="M256 128c0 70.7-57.3 128-128 128S0 198.7 0 128 57.3 0 128 0s128 57.3 128 128z" fill="#a6ce39"></path> <path d="M86.3 186.2H70.9V79.1h15.4v107.1zm22.6-107.1h41.6c39.6 0 57 28.3 57 53.6 0 27.5-21.5 53.6-56.8 53.6h-41.8V79.1zm15.4 93.3h24.5c34.9 0 42.9-26.5 42.9-39.7C191.7 111.2 178 93 148 93h-23.7v79.4zM88.7 56.8c0 5.5-4.5 10.1-10.1 10.1s-10.1-4.6-10.1-10.1c0-5.6 4.5-10.1 10.1-10.1s10.1 4.6 10.1 10.1z" fill="#fff"></path> </svg></span></a><sup>1</sup></span> </div> <div class="simpleShowMore"> <button class="simpleShowMore__button">显示更多</button> </div> <div class="articleHeader__academicEditor"> <strong>客座编辑:</strong> <span>Kok-Seng黄</span> </div> <div class="articleHeader__timeline"> <div class="articleHeader__timeline_item "> <strong>收到了</strong> <span>2018年4月13日</span> </div> <div class="articleHeader__timeline_item "> <strong>修改后的</strong> <span>2018年8月18日</span> </div> <div class="articleHeader__timeline_item "> <strong>接受</strong> <span>2018年9月04</span> </div> <div class="articleHeader__timeline_item articleHeader__timeline_item_sticky"> <strong>发表</strong> <span>2018年9月25日</span> </div> </div> </div> <div class="articleBody"> <div class="xml-content"> <h4 class="header" id="abstract">文摘</h4> <p>可以利用机会出售将计算任务和交通数据移动边缘计算(MEC)。提高成功的比率数据卸载和减少不必要的数据冗余在机会转发过程中,一些方法的评估提出了一个设备的转发能力。然而,大多数这些方法不考虑时间影响设备的灵活性和效率影响能力的计算过程。为了解决这些问题,我们提出了一个Transient-cluster-based能力评价方法(TCEM)来评估设备的数据转发能力。TCEM可以分为两个步骤。第一步旨在减少计算复杂度评估设备的联系目的地的可能性在时间约束的基础上我们提出了瞬态所产生的瞬态集群集群检测方法(TCDM)。第二步是计算设备的直接和间接的概率数据转发到目的地。概率评估设备的转发能力的指标可用于不同的数据转发策略。仿真结果表明,TCEM-based数据转发策略优于其它数据转发策略方面的数据的比例交货率数据冗余。</p> <span class="end-abs"></span> <h4 id="introduction">1。介绍</h4> <p>机会出售作为一个新兴的通信模式可用于MEC将计算或交通数据利用形成的机会网络的移动设备(<a href="#B1">1</a>- - - - - -<a href="#B3">3</a>]。例如,在计算卸载一个边缘计算资源有限的移动设备可以将计算任务通过机会交流到其他附近的设备闲置计算资源,在流量卸载设备边缘缓存一再请求或受欢迎的内容内容转移到用户机会沟通减少网络流量和设备的能源消耗。机会出售基于投机取巧的移动设备之间的连接造成随机延迟;因此,适用于非像电子邮件内容,播客,和天气预报,可以容忍一些延迟交付。</p> <p>最大限度地将计算任务和交通数据在时间约束,成功的比例数据交付需要最大化机会主义的数据转发。在投机取巧的卸载,卸载设备可能的数据转发给机会遇到设备通过store-carry-forward机制增加成功交付的比率。转发数据,每一个机会遇到设备数据的截止日期之前或目的地交货率达到最大化数据,但是这个过程会产生大量的冗余数据由设备不能联系目的地的有效时间内的数据。这些冗余数据消耗大量设备的资源有限,如存储容量和电池寿命。因此,在本文中,我们研究如何减少机会主义的冗余数据转发过程而成功的比率最大化数据交付,当一个设备发送请求与时间约束的缓存数据到另一个设备。关键的挑战是如何使战略机会遇到设备复制数据。</p> <p>最近文献数据转发策略基于比较设备的数据转发能力。设备进行数据复制数据到设备具有更高的能力或最高的设备功能。尽管通过这种方法,减少数据冗余存在一些问题评估设备的数据转发能力。例如,评价方法(<a href="#B4">4</a>,<a href="#B5">5</a>]来自社区聚合形成的联系信息。然而,接触模式是时变的。通过聚合的联系信息到一个聚合联系图,一些重要的联系信息,例如,爆炸的行为,可能会丢失,削弱转发能力评估的准确性。另外一些评价方法如曾经(<a href="#B14">6</a>需要全球提前联系信息。在大规模的移动场景中是不现实的。</p> <p>本文优化数据交货率和减少不必要的冗余,我们提出一个分布式method-Transient-cluster-based能力评价方法(TCEM)。TECM的第一步是判断设备的可能性联系目的地的时间内约束数据的使用我们提出集群瞬态检测方法(TCDM)。第二步是计算遇到目的地的时间内的设备的概率约束的数据作为评价指标。该方法的贡献可以概括如下:<span class="list"><span class="list-item"><span class="list-label">(我)</span><span class="list-content">我们提议TCEM分布。每个设备都使用这种方法来评估其转发功能基于瞬态信息取得联系。与一些集中的方法相比,需要全球提前联系信息,我们建议的方法更加可行MEC的流动情况下。</span></span><span class="list-item"><span class="list-label">(2)</span><span class="list-content">提出集群检测方法TCDM是由时变接触模式的设备。与其他两个瞬态集群检测方法相比(草案<a href="#B12">7</a>]和CCM [<a href="#B16">8</a>),TCDM更简单,更有效率。</span></span><span class="list-item"><span class="list-label">(3)</span><span class="list-content">与一些方法相比,直接计算出每个设备遇到的概率转发能力评估指标,我们提议TCEM有效地降低了计算复杂度,因为我们第一次评估设备遇到的数据转发到目的地的可能性,只有可能性高的设备计算概率。</span></span><span class="list-item"><span class="list-label">(iv)</span><span class="list-content">TCEM准确评估设备能力的数据转发到特定的设备在一个时间限制,因为它是基于个人对国米接触时间(ICT)分布和瞬态的影响考虑集群的持续时间概率的计算过程。</span></span></span></p> <p>剩下的纸是组织如下。部分<a href="#sec2">2</a>简要概述的相关工作。节<a href="#sec3">3</a>,我们给TCEM-based数据转发策略的概述。部分<a href="#sec4">4</a>呈现我们的提议TCEM细节。它包含TCDM和概率计算。部分<a href="#sec5">5</a>通过仿真评估我们的方法的性能,部分<a href="#sec6">6</a>总结了纸。</p> <h4 id="related-work">2。相关工作</h4> <p>投机取巧的数据来源于流行路由转发协议(<a href="#B6">9</a>洪水的网络)。尽管这种基于洪泛算法可以实现包交货率最高,这导致大量的网络中冗余的数据拷贝。后来的研究致力于开发转发协议接近流行路由的性能较低的成本,这是衡量网络中数据副本的数量。目前,最成功的方法机会转发social-aware策略(<a href="#B23">10</a>]。利用社会接触形成的群落结构的节点模式已被广泛用于评估节点的转发能力的方法,因为它是更可靠、更容易受到人类流动的随机性。</p> <p>在泡沫说唱<a href="#B4">4</a>],SimBet [<a href="#B30">11</a>],MDDPC-based [<a href="#B9">12</a>),和基于rpc的<a href="#B10">13</a>数据转发策略,一个节点的数据转发功能是由其社会重要性的程度促进其他节点之间的通信。他们正在评估基于社区。提高决策的效率路由的过程,提出了一些方案结合特性。例如,SimbetTS [<a href="#B31">14</a>)增加了对效用的领带强度计算,Oi [<a href="#B24">15</a>]和SCORP [<a href="#B25">16</a>)结合用户的社会关系与他们的兴趣social-aware机会主义路由和GROUPS-Net<a href="#B26">17</a>)结合了社会意识和概率方法使用小组会议作为衡量社会环境提高交货率的数据。取样器(<a href="#B22">18</a>使用社会社区和社会声望指标作为他们介绍了原泡沫说唱(<a href="#B4">4</a>)计划并添加感兴趣的个人移动性和分在一个地区,帮助实现高交货率和减少网络开销。小姑娘(<a href="#B27">19</a>)提出了考虑每个社区成员的内部活动的差异。它利用不同层次的当地活动在社区内实现有效的数据转发。然而,在这些策略形成的社区是基于前面的知识累积接触。的瞬态特征节点接触模式,这将影响数据转发性能,将被忽略。</p> <p>参考文献(<a href="#B14">6</a>,<a href="#B12">7</a>,<a href="#B11">20.</a>- - - - - -<a href="#B29">24</a>)考虑时变模式节点之间联系。魏et al。<a href="#B11">20.</a>)开发一种新型的评价方法分析预测一个移动节点的转发能力提出基于瞬态社区结构。一个有效的时间亲密和centrality-based数据转发策略TCCB [<a href="#B28">23</a>)提出的预测节点的未来时间社交模式。然而,这两个方案是不适合我们建议的情况。自评估节点的数据转发能力<a href="#B11">20.</a>)是基于中心在其短暂的社区,<a href="#B28">23</a>)是基于中心在网络中的所有节点,他们并没有反映出节点转发数据到目的地的能力。该方法(草案<a href="#B12">7</a>措施一个节点的转发功能通过判断节点的2-hop集群是否包含目的地。集群形成基于参与者的累积或腐烂的接触时间。SimBetAge [<a href="#B29">24</a>岁]改善SimBet采用一个图来计算动态社会指标。这些方法不够有效,因为他们提高转发的数据复制的性能数据很可能所有节点,还产生大量的冗余数据。TSM [<a href="#B13">21</a>)评估节点的转发能力基于三种类型的时变社会指标:中间性中心,相似性,和领带的力量,来源于社会数据的分析两组。文献[<a href="#B21">22</a>)提出了一种CAOF计划,其中包括共同性和intracommunity阶段。在共同性阶段,全球主观能动性和source-to-destination概率较高的节点被选中作为火炬传递。此外,在intracommunity阶段,转发决策是由当地的指标。无论何时(<a href="#B14">6</a>]提出评估节点的转发能力基于其价值(EV),这是直接遇到参与者的数量数据的有效时间内。在某些情况下这四个方法是不现实的,因为他们需要全球提前联系信息数据的有效时间内。相对我们的提议TCEM分布,有效降低了计算复杂度,因为我们第一次评估设备遇到的数据转发到目的地的可能性,只有设备高可能性的概率计算。</p> <p>第二步我们的提议TCEM需要计算的概率节点传输数据到一个特定的节点数据的有效时间内。ICT被定义为两个连续遇到两个设备之间时间消逝;因此它可以用于计算的概率。最总ICT分布概率计算方法使用:幂律+尾部指数或指数,通过考虑到样本一起配对。然而Hernandez-Orallo et al。<a href="#B15">25</a>)提出用总ICT的分布代表个人对“ICT分布一般不会是正确的,如果网络是异构的。因此在本文中,我们考虑不同个体对信息通信技术的分布概率计算过程更准确地评估节点的转发能力。</p> <h4 id="tcem-based-data-forwarding-strategy">3所示。TCEM-Based数据转发策略</h4> <p>投机取巧的数据转发过程中,设备的数据使得数据转发策略基于遇到设备的数据转发能力。事实上的方法评估设备的数据转发能力在时间约束是独立于数据转发策略。不同的转发能力评估方法可以应用于相同的数据转发策略。例如,[<a href="#B16">8</a>,<a href="#B11">20.</a>所有数据转发给设备具有更高的能力,而他们使用不同的转发能力评估方法。在本节中,我们运用我们提出设备的数据转发能力评价方法TCEM在数据转发策略进行数据参与者将数据转发到参与者具有更高的能力。</p> <p>数据转发策略由两部分组成。首先它使用TCEM评价连接设备转发数据到目标的能力。然后决定是否复制数据到这个设备的评价结果。详细的过程说明如下。</p> <p>当一个设备<svg height="9.14241pt" id="M1" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M389 0V32C297 38 291 46 291 118V635C234 613 175 595 109 583V556L161 554C203 552 207 547 207 497V118C207 46 201 38 110 32V0H389Z" id="g50-50"></path> </g> </svg>数据连接的设备<span class="nowrap"> <svg height="9.14241pt" id="M2" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M414 144C384 79 371 75 317 75H135L276 221C367 316 408 376 408 465C408 570 327 635 237 635C179 635 131 609 100 575L42 494L67 471C94 510 138 565 205 565C277 565 321 517 321 435C321 348 258 270 195 195C146 137 88 81 33 26V0H411C423 44 433 88 446 135L414 144Z" id="g50-51"></path> </g> </svg>,</span> <svg height="9.14241pt" id="M3" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>首先法官是否<svg height="9.14241pt" id="M4" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>携带这些数据。如果<svg height="9.14241pt" id="M5" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>有这些数据,<svg height="9.14241pt" id="M6" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>直接跳过<span class="nowrap"> <svg height="9.14241pt" id="M7" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>。</span>否则<svg height="9.14241pt" id="M8" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>执行数据转发策略如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig1/" target="_blank">1</a>。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-22acab2b109ecf387071efaa4bd84d93"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.001.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-22acab2b109ecf387071efaa4bd84d93 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.001_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-22acab2b109ecf387071efaa4bd84d93 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图1</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> TCEM-based机会数据转发策略。</d我v> </div> </div> </div> <p>在一个部分中,策略使用TCEM评估<svg height="9.14241pt" id="M9" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>数据转发能力。TCEM包含两个步骤。在第一步中,法官是否<svg height="9.14241pt" id="M10" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>有可能限制的时间内传输数据到目标基于瞬态集群。只有当<svg height="9.14241pt" id="M11" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>集群的瞬态或其邻近的瞬态集群包含目的地,第二步将继续,否则<svg height="9.14241pt" id="M12" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>不复制数据吗<svg height="9.14241pt" id="M13" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>和战略将结束。详细的瞬态集群检测方法(TCDM)是在部分<a href="#sec4.1">4.1</a>。第二步是使用ICT参与者之间分布来计算概率<svg height="13.9182pt" id="M14" style="vertical-align:-5.2823pt" version="1.1" viewbox="-0.0498162 -8.6359 15.9962 13.9182" width="15.9962pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M600 480C600 590 528 650 384 650H143L137 622C222 614 225 607 210 531L130 127C113 41 106 36 23 28L17 0H294L300 28C204 36 195 42 212 127L243 284L314 263C327 263 339 263 352 264C465 271 600 337 600 480ZM508 481C508 351 402 304 329 304C289 304 265 311 250 317L295 559C302 594 310 606 323 611C335 616 350 619 367 619C455 619 508 573 508 481Z" id="g113-81"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <path d="M528 97L513 125C484 95 440 68 431 68C425 68 421 76 427 107C449 227 476 342 505 451H495L418 424L385 278C338 191 220 62 157 62C145 62 133 76 145 130L200 368C215 434 210 451 183 451C157 451 92 418 24 352L37 324C78 356 106 377 115 377C123 377 122 364 116 340L64 115C58 89 56 68 56 52C56 2 78 -12 103 -12C127 -12 159 -4 190 18C247 59 309 113 366 187H368L351 108C328 1 348 -12 368 -12C403 -12 472 33 528 97Z" id="g50-118"></path> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <path d="M452 139L416 148C386 81 373 77 319 77H141L282 220C372 312 414 373 414 464C414 569 332 635 240 635C181 635 132 609 101 574L42 493L70 467C98 506 143 562 209 562C280 562 324 515 324 435C324 347 261 272 197 197C148 139 89 84 34 29V0H417L452 139Z" id="g176-51"></path> </g> </svg>那<svg height="9.14241pt" id="M15" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>将数据转发到目的地的时间内数据的约束。计算过程部分所示<a href="#sec4.2">4.2</a>。在我们提出的方法的概率作为度量评估参与者的转发能力。</p> <p>在B部分,战略决定是否复制数据<svg height="9.14241pt" id="M16" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>根据转发的概率<span class="nowrap"> <svg height="9.14241pt" id="M17" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>。</span>如果<svg height="9.14241pt" id="M18" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>的概率联系目标数据的有效时间内高于<span class="nowrap"> <svg height="9.14241pt" id="M19" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>,</span> <svg height="9.14241pt" id="M20" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>将数据复制到<span class="nowrap"> <svg height="9.14241pt" id="M21" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>,</span>或<svg height="9.14241pt" id="M22" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>不会。设备与数据执行上述数据转发策略,说明连接设备时没有携带这些数据。这个过程一直持续到目的地接收数据的有效时间内的数据。</p> <h4 id="data-forwarding-capability-evaluation-method-of-the-device-(tcem)">4所示。设备的数据转发能力评价方法(TCEM)</h4> <p>我们建议TCEM包括两个步骤:评估和可能性概率计算。这两个步骤是基于瞬态集群。在本节中,我们首先描述我们提出了瞬态TCDM集群检测方法,以及如何评估设备的联系目的地(部分的可能性<a href="#sec4.1">4.1</a>)。然后我们详细说明如何计算设备的概率成功的数据交付的时间限制内t(部分<a href="#sec4.2">4.2</a>)。</p> <h5 id="sec4.1">4.1。瞬态集群检测方法</h5> <p>在本文中,每一个设备<span class="inline_break"> <svg height="12.5794pt" id="M23" style="vertical-align:-3.29107pt" version="1.1" viewbox="-0.0498162 -9.28833 35.07 12.5794" width="35.07pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> <g transform="matrix(.013,0,0,-0.013,9.985,0)"> <path d="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path> </g> <g transform="matrix(.013,0,0,-0.013,14.483,0)"> <path d="M384 0V27C293 34 287 42 287 114V635C232 613 172 594 109 583V559L157 557C201 555 205 550 205 499V114C205 42 199 34 109 27V0H384Z" id="g113-50"></path> </g> <g transform="matrix(.013,0,0,-0.013,20.723,0)"> <path d="M95 130C70 130 46 113 46 88C46 72 54 64 59 64C93 55 121 33 121 -3C121 -41 93 -68 44 -88L55 -117C117 -98 186 -56 186 22C186 91 131 130 95 130Z" id="g113-45"></path> </g> <g transform="matrix(.013,0,0,-0.013,25.866,0)"> <path d="M412 140C382 77 369 73 315 73H129L270 222C362 320 402 379 402 466C402 571 322 635 234 635C177 635 130 609 99 576L42 495L64 475C90 514 133 568 201 568C274 568 318 519 318 435C318 349 255 267 193 193C144 135 87 78 32 23V0H405C417 45 427 89 440 131L412 140Z" id="g113-51"></path> </g> <g transform="matrix(.013,0,0,-0.013,32.106,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="37.1991838 -9.28833 18.427 12.5794" width="18.427pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,37.249,0)"> <path d="M113 -12C146 -12 170 11 170 46C170 78 146 103 114 103S58 78 58 46C58 11 82 -12 113 -12Z" id="g113-47"></path> </g> <g transform="matrix(.013,0,0,-0.013,42.392,0)"> <use xlink:href="#g113-47"></use> </g> <g transform="matrix(.013,0,0,-0.013,47.535,0)"> <use xlink:href="#g113-47"></use> </g> <g transform="matrix(.013,0,0,-0.013,52.712,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="57.805183799999995 -9.28833 11.288 12.5794" width="11.288pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,57.855,0)"> <path d="M495 86L479 114C446 82 419 66 409 66C401 66 401 72 406 97C420 166 436 231 453 297C489 435 454 448 428 448C406 448 384 439 354 422C305 394 222 327 161 247H159L183 345C200 415 194 448 173 448C143 448 82 410 23 351L38 325C64 349 95 371 105 371C111 371 116 365 109 336L25 -4L31 -12C50 -4 77 3 107 9C119 69 132 122 145 168C197 254 321 381 370 381C387 381 393 374 378 305L329 95C309 17 320 -12 345 -12C372 -12 430 19 495 86Z" id="g113-111"></path> </g> <g transform="matrix(.013,0,0,-0.013,64.381,0)"> <path d="M275 270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z" id="g113-42"></path> </g> </svg></span>有一个时变瞬态集群<span class="nowrap"> <svg height="12.2532pt" id="M24" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>,</span>反映一组设备,高接触率,和设备吗<svg height="9.25202pt" id="M25" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>相邻的集群<svg height="11.927pt" id="M26" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>指的是瞬态集群共享相同的设备<span class="nowrap"> <svg height="9.25202pt" id="M27" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>。</span>如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig2/" target="_blank">2</a>集群,虚线圆圈代表瞬态。<svg height="12.1436pt" id="M28" style="vertical-align:-3.18148pt" version="1.1" viewbox="-0.0498162 -8.96212 12.249 12.1436" width="12.249pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>是设备<svg height="9.14241pt" id="M29" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>的瞬态集群<span class="nowrap"> <svg height="8.02022pt" id="M30" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> </svg>。</span>它包含<span class="inline_break"> <svg height="9.25202pt" id="M31" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 14.839 9.25202" width="14.839pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.013,0,0,-0.013,11.875,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="9.25202pt" style="vertical-align:-3.29111pt" version="1.1" viewbox="16.9691838 -5.96091 14.839 9.25202" width="14.839pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,17.019,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,23.948,3.132)"> <path d="M290 377C321 398 342 415 358 430C378 450 389 473 389 502C389 578 329 635 238 635H237C184 635 137 610 109 578L64 515L88 493C112 529 154 573 208 573S303 542 303 482C303 409 233 370 141 341L149 308C165 313 190 319 215 319C272 319 341 283 341 193C342 98 292 43 222 43C163 43 122 72 96 94C88 101 79 100 70 94C61 87 47 73 46 60C44 47 48 37 62 23C76 10 118 -12 165 -12C238 -12 430 62 430 223C430 297 379 359 290 375V377Z" id="g50-52"></path> </g> <g transform="matrix(.013,0,0,-0.013,28.894,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="9.25202pt" style="vertical-align:-3.29111pt" version="1.1" viewbox="33.9871838 -5.96091 12.075 9.25202" width="12.075pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,34.037,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,40.966,3.132)"> <path d="M462 177V227H365V632H320C217 496 116 350 21 208V177H284V109C284 43 280 38 190 31V0H451V31C369 38 365 43 365 108V177H462ZM284 227H88C155 336 218 430 282 519H284V227Z" id="g50-53"></path> </g> </svg></span>具有高接触率<svg height="9.14241pt" id="M32" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>在这一刻,<span class="inline_break"> <svg height="12.2532pt" id="M33" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 15.086 12.2532" width="15.086pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.013,0,0,-0.013,12.122,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="12.2532pt" style="vertical-align:-3.29108pt" version="1.1" viewbox="17.2161838 -8.96212 15.086 12.2532" width="15.086pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,17.266,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,24.442,3.132)"> <use xlink:href="#g50-52"></use> </g> <g transform="matrix(.013,0,0,-0.013,29.388,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="12.2532pt" style="vertical-align:-3.29108pt" version="1.1" viewbox="34.4811838 -8.96212 12.325 12.2532" width="12.325pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,34.531,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,41.707,3.132)"> <use xlink:href="#g50-53"></use> </g> </svg></span>是<svg height="9.14241pt" id="M34" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>相邻的簇。我们的设备有可能将数据迁移到目的地,只有当其瞬态集群或相邻的瞬态集群包含目的地。例如,在图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig2/" target="_blank">2</a>如果数据的目的地<svg height="9.25202pt" id="M35" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.25202" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-52"></use> </g> </svg>或<span class="nowrap"> <svg height="9.25202pt" id="M36" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.25202" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M158 548H390L417 615L410 623H122L83 318C105 326 143 337 185 337C296 337 350 275 350 188C350 116 308 42 225 42C164 42 122 74 100 93C90 101 82 99 72 92C60 82 51 68 50 59C48 46 52 38 66 24C82 9 125 -12 172 -12C225 -11 292 15 346 59C408 108 437 166 437 226C437 309 371 397 242 397C214 397 170 382 133 369L158 548Z" id="g50-54"></path> </g> </svg>,</span>这是在<svg height="9.14241pt" id="M37" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>的集群或瞬态<svg height="9.14241pt" id="M38" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>相邻的集群<span class="nowrap"> <svg height="12.1436pt" id="M39" style="vertical-align:-3.18148pt" version="1.1" viewbox="-0.0498162 -8.96212 12.249 12.1436" width="12.249pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-51"></use> </g> </svg>,</span>分别时,设备<svg height="9.14241pt" id="M40" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 12.001 9.14241" width="12.001pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-50"></use> </g> </svg>将有可能将数据传输到目的地。评价标准设置,因为两个原因。第一个有效内容传播主要是由于接触率高的节点<a href="#B17">26</a>]。第二个设置设备的邻居视图超过2跳不提高转发效率,甚至极大地增加数据冗余(<a href="#B18">27</a>]。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-15e4098f663c5de2a4a7a4f6d8450bbc"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.002.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-15e4098f663c5de2a4a7a4f6d8450bbc partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.002_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-15e4098f663c5de2a4a7a4f6d8450bbc partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图2</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig2/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 设备的瞬态集群及其相邻的簇。</d我v> </div> </div> </div> <p>因此,对于评估一个设备<svg height="9.25202pt" id="M41" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>的联系目的地的可能性,该设备也将其相邻的存储集群<span class="nowrap"> <svg height="11.927pt" id="M42" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-66"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>,</span>除了存储其瞬态集群<span class="nowrap"> <svg height="12.2532pt" id="M43" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>。</span>接触率用于构造瞬态可以由ICT集群之间的时间间隔是两个连续的邂逅。我们定义两个设备之间的接触率是高的,当且仅当它们之间的ICT小于一个预定义的阈值<span class="nowrap"> <svg height="6.1673pt" id="M44" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M536 404C536 423 520 448 491 448C445 448 398 404 308 283L286 338C255 416 242 448 217 448C182 448 138 402 92 341L111 321C149 368 169 378 178 378C188 378 198 363 214 320L254 212C185 117 138 65 107 65C98 65 85 69 82 75C79 82 73 86 65 86C44 86 23 60 23 39C23 7 44 -12 71 -12C119 -12 168 33 265 177L306 61C321 17 347 -12 373 -12C413 -12 465 33 507 96L491 119C459 84 432 60 413 60C395 60 378 92 358 148L321 250C341 279 369 310 389 332C417 363 439 382 456 382C466 382 475 376 481 368C486 361 492 358 496 358C513 358 536 381 536 404Z" id="g113-121"></path> </g> </svg>。</span>一个设备将删除设备的信息通信技术比<svg height="6.1673pt" id="M45" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> </svg>从其瞬态集群。的价值<svg height="6.1673pt" id="M46" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> </svg>基于不同的痕迹。因为成对ict时变(<a href="#B13">21</a>,<a href="#B8">28</a>),准确地获取当前时间的瞬态集群和相邻的集群,每一个<svg height="6.1673pt" id="M47" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> </svg>小时设备更新其瞬态集群只包含设备遇到在这个时间段和更新设备遇到设备时其相邻的簇。构建存储信息的设备的过程中描述的算法<a href="//www.newsama.com/journals/wcmc/2018/4801465/alg1/" target="_blank">1</a>。它不需要集中控制,独立执行的每一个设备。</p> <div class="floats-partial-section"> <div class="floats-partial-content"> <table class="algorithm-group"> <tbody> <tr> <td> <table class="algorithm" id="alg1"> <tbody> <tr> <td colspan="2"><b>输入</b>:开始时间<span class="nowrap"> <svg height="11.1049pt" id="M49" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -7.81382 9.43046 11.1049" width="9.43046pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M245 635C92 635 37 457 37 312C37 149 91 -12 244 -12C395 -12 449 166 449 312C449 469 395 635 245 635ZM243 598C332 598 358 454 358 312C358 173 334 26 245 26C158 26 128 174 128 313S152 598 243 598Z" id="g50-49"></path> </g> </svg>。</span></td> </tr> <tr> <td colspan="2"><b>输出</b>:<我>u</我><sub><i>我</我></sub>集群的瞬态<span class="nowrap"> <svg height="12.2532pt" id="M50" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>,</span><i>u</我><sub><i>我</我></sub>相邻的簇<span class="nowrap"> <svg height="11.927pt" id="M51" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>。</span></td> </tr> <tr> <td colspan="2"><b>初始化</b>:<svg height="12.2532pt" id="M52" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>=<span class="nowrap"> <svg height="11.5564pt" id="M53" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 15.4188 11.5564" width="15.4188pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M293 -169V-141C218 -131 209 -90 209 -44C209 19 222 85 222 152C222 207 198 255 139 269V273C199 286 222 334 222 388C222 454 209 523 209 588C209 632 218 671 293 681V709C234 709 148 695 148 577C147 513 155 438 155 372C155 337 152 291 64 285V256C152 250 155 204 155 169C156 105 148 31 148 -41C148 -157 234 -169 293 -169Z" id="g113-124"></path> </g> <g transform="matrix(.013,0,0,-0.013,4.511,0)"> <path d="M411 648L381 663L349 596C321 620 285 635 241 635C89 635 35 457 35 312C35 217 55 118 102 56L63 -24L92 -43L128 29C157 3 194 -12 240 -12C390 -12 443 166 443 312C443 406 424 507 374 569L411 648ZM141 132C126 185 119 247 119 312C119 465 149 601 239 601C278 601 305 577 321 542L141 132ZM338 497C355 434 360 373 360 312C360 159 329 21 240 21C202 21 174 47 157 85L338 497Z" id="g113-25"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.751,0)"> <path d="M283 255V284C195 290 192 337 192 375C192 436 200 508 200 580C200 696 116 709 54 709V681C127 671 139 634 139 588C138 524 125 452 125 387C125 333 149 286 209 272V268C148 253 125 206 125 151C126 87 139 16 139 -47C139 -92 127 -131 54 -141V-169C115 -169 200 -152 200 -41C200 32 192 104 192 164C192 202 195 249 283 255Z" id="g113-126"></path> </g> </svg>,</span> <svg height="11.927pt" id="M54" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 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469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>,</span> <svg height="9.25202pt" id="M58" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 14.4685 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</svg><b>做</b></td> </tr> <tr> <td colspan="2"><span style="margin-left:1.1111111111111112em"></span> <svg height="13.3428pt" id="M59" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -7.81382 10.8005 13.3428" width="10.8005pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.249,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>=<我>t</我><sub><i>当前的</我></sub><i>- - - - - -</我> <svg height="14.2823pt" id="M60" style="vertical-align:-5.52896pt" version="1.1" viewbox="-0.0498162 -8.75334 36.9577 14.2823" width="36.9577pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> <g transform="matrix(.013,0,0,-0.013,13.152,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,17.455,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,26.141,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 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id="g50-107"></path> </g> </svg>ICT在当前时间吗</td> </tr> <tr> <td colspan="2"><span style="margin-left:1.1666666666666667em"></span><b>如果</b>(<svg height="13.3428pt" id="M61" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -7.81382 10.8005 13.3428" width="10.8005pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 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366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>高接触率<svg height="9.25202pt" id="M63" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span 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5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>=<svg height="12.2532pt" id="M65" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg><i>+</我> <svg height="14.2823pt" id="M66" style="vertical-align:-5.52896pt" version="1.1" viewbox="-0.0498162 -8.75334 24.4769 14.2823" width="24.4769pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> <g transform="matrix(.013,0,0,-0.013,15.713,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,20.016,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>添加遇到<svg height="11.4899pt" id="M67" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 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transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span style="margin-left:1.8888888888888888em"></span> <svg height="13.3428pt" id="M69" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -7.81382 8.9098 13.3428" width="8.9098pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>=<我>t</我><sub><i>当前的</我></sub> <svg height="9.3838pt" id="M70" style="vertical-align:-0.6304598pt" version="1.1" viewbox="-0.0498162 -8.75334 13.0962 9.3838" width="13.0962pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,4.358,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,8.661,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>记录遇到的时间</td> </tr> <tr> <td colspan="2"><span style="margin-left:1.9444444444444444em"></span><b>如果</b>(<svg height="11.927pt" id="M71" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>包含<svg height="14.4911pt" id="M72" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -8.96212 11.7283 14.4911" width="11.7283pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>)<svg height="9.3838pt" id="M73" style="vertical-align:-0.6304598pt" version="1.1" viewbox="-0.0498162 -8.75334 8.73792 9.3838" width="8.73792pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,4.303,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>是否遇到<svg height="11.4899pt" id="M74" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>之前</td> </tr> <tr> <td colspan="2"><span style="margin-left:3.4444444444444446em"></span>更新<svg height="14.4911pt" id="M75" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -8.96212 11.7283 14.4911" width="11.7283pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>在<svg height="11.927pt" id="M76" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span style="margin-left:1.8888888888888888em"></span><b>其他的</b></td> </tr> <tr> <td colspan="2"><span style="margin-left:3.4444444444444446em"></span> <svg height="11.927pt" id="M77" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>=<svg height="11.927pt" id="M78" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>+<svg height="14.4911pt" id="M79" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -8.96212 11.7283 14.4911" width="11.7283pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span style="margin-left:1.1111111111111112em"></span>其他的</td> </tr> <tr> <td colspan="2"><span style="margin-left:3.4444444444444446em"></span> <svg height="13.3428pt" id="M80" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -7.81382 8.9098 13.3428" width="8.9098pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg><i>= t</我><sub><i>当前的</我></sub> <svg height="9.3838pt" id="M81" style="vertical-align:-0.6304598pt" version="1.1" viewbox="-0.0498162 -8.75334 13.0962 9.3838" width="13.0962pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,4.358,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,8.661,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>记录的时间<svg height="9.25202pt" id="M82" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>遇到<svg height="11.4899pt" id="M83" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg></td> </tr> <tr> <td colspan="2">结束</td> </tr> <tr> <td colspan="2"><b>为</b>((<我>t</我><sub><i>当前的</我></sub><i>- - - - - -</我> <svg height="11.1049pt" id="M84" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -7.81382 9.43046 11.1049" width="9.43046pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z" id="g113-117"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M245 635C92 635 37 457 37 312C37 149 91 -12 244 -12C395 -12 449 166 449 312C449 469 395 635 245 635ZM243 598C332 598 358 454 358 312C358 173 334 26 245 26C158 26 128 174 128 313S152 598 243 598Z" id="g50-49"></path> </g> </svg>)<svg height="8.90755pt" id="M85" style="vertical-align:-0.4021397pt" version="1.1" viewbox="-0.0498162 -8.50541 14.2575 8.90755" width="14.2575pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M660 631L632 654L139 -3L167 -27L660 631ZM379 497C379 569 347 635 269 635C161 635 92 510 92 410C92 339 126 273 202 273C309 273 379 398 379 497ZM312 527C312 469 285 303 207 303C165 303 160 353 160 392C160 454 190 605 264 605C304 605 312 565 312 527ZM707 212C707 284 675 350 597 350C490 350 420 224 420 124C420 53 454 -12 530 -12C637 -12 707 113 707 212ZM640 241C640 183 613 17 535 17C493 17 488 68 488 106C488 169 518 320 592 320C632 320 640 279 640 241Z" id="g189-38"></path> </g> </svg><i>x = = 0</我>)<b>做</b> <svg height="9.3838pt" id="M86" style="vertical-align:-0.6304598pt" version="1.1" viewbox="-0.0498162 -8.75334 13.0962 9.3838" width="13.0962pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,4.358,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,8.661,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>更新<svg height="12.2532pt" id="M87" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg>每x小时</td> </tr> <tr> <td colspan="2"><span style="margin-left:1.8888888888888888em"></span><b>为</b>每一个<svg height="11.4899pt" id="M88" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z" id="g113-118"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>在<svg height="12.2532pt" id="M89" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 14.7164 12.2532" width="14.7164pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg><b>做</b></td> </tr> <tr> <td colspan="2"><span style="margin-left:3.4444444444444446em"></span><b>如果</b>(<svg height="14.8173pt" id="M90" style="vertical-align:-5.52897pt" version="1.1" viewbox="-0.0498162 -9.28833 77.9823 14.8173" width="77.9823pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 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177L306 61C321 17 347 -12 373 -12C413 -12 465 33 507 96L491 119C459 84 432 60 413 60C395 60 378 92 358 148L321 250C341 279 369 310 389 332C417 363 439 382 456 382C466 382 475 376 481 368C486 361 492 358 496 358C513 358 536 381 536 404Z" id="g113-121"></path> </g> </svg>小时</td> </tr> <tr> <td colspan="2"><span style="margin-left:4.4444444444444446em"></span> <svg height="12.2532pt" id="M93" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg><i>=</我> <svg height="12.2532pt" id="M94" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg><i>- - - - - -</我> <svg height="14.2823pt" id="M95" style="vertical-align:-5.52896pt" version="1.1" viewbox="-0.0498162 -8.75334 24.4769 14.2823" width="24.4769pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 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-185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>从<svg height="12.2532pt" id="M97" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 10.3582 12.2532" width="10.3582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span style="margin-left:4.4444444444444446em"></span> <svg height="11.927pt" id="M98" style="vertical-align:-3.291101pt" version="1.1" viewbox="-0.0498162 -8.6359 13.4377 11.927" width="13.4377pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 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217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg><i>- - - - - -</我> <svg height="14.4911pt" id="M100" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -8.96212 20.3666 14.4911" width="20.3666pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> <g transform="matrix(.013,0,0,-0.013,11.602,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> <g transform="matrix(.013,0,0,-0.013,15.905,0)"> <path d="M298 665H241L25 -44H81L298 665Z" id="g190-48"></path> </g> </svg>删除<svg height="11.4899pt" id="M101" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 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transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M686 28C612 35 607 44 591 112C563 234 541 360 519 489L489 666L457 658L147 121C100 40 89 36 24 28L17 0H240L250 28C168 34 159 41 190 101L262 237H482C495 180 503 137 510 91C517 47 514 35 441 28L433 0H677L686 28ZM475 280H285L429 541H431L475 280Z" id="g113-66"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,10.244,3.132)"> <path d="M250 606C250 634 233 656 203 656C168 656 146 618 146 593C146 564 169 545 192 545C227 545 250 573 250 606ZM227 95L212 119C187 98 152 71 135 71C129 71 128 78 134 102L207 373C219 418 217 451 194 451C165 451 92 411 30 351L44 326C77 353 106 371 114 371C124 371 121 357 117 341L55 97C32 5 46 -12 70 -12C108 -12 191 51 227 95Z" id="g50-106"></path> </g> </svg></td> </tr> <tr> <td colspan="2"><span style="margin-left:1.8888888888888888em"></span><b>结束</b></td> </tr> <tr> <td colspan="2">结束</td> </tr> </tbody> </table></td> </tr> </tbody> </table> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">算法1</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/alg1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 建筑信息存储的设备<span class="nowrap"> <svg height="9.25202pt" id="M48" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>。</span> </div> </div> </div> <h5 id="sec4.2">4.2。计算的概率</h5> <p>TCEM的第一步后,设备将数据传输到目的地的可能性已经确定。然而,无法保证数据可以交付到目的地时间限制内的设备,即使是最多2跳的路径。减少数据冗余,然后在第二步中,我们计算设备的概率约束的时间内将数据传输到目的地,代表设备的转发能力。遇到的设备与数据只复制数据到设备的概率高于他。计算过程分为两种情况:<svg height="11.5564pt" id="M103" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 15.3928 11.5564" width="15.3928pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-50"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.738,0)"> <use xlink:href="#g113-42"></use> </g> </svg>目的地是在<svg height="9.25202pt" id="M104" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>的瞬态集群,<svg height="11.5564pt" id="M105" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 15.3928 11.5564" width="15.3928pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-51"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.738,0)"> <use xlink:href="#g113-42"></use> </g> </svg>目的地是在<svg height="9.25202pt" id="M106" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>相邻的瞬态集群。表<a href="//www.newsama.com/journals/wcmc/2018/4801465/tab1/" target="_blank">1</a>给在这一节中使用的符号。</p> <div class="floats-partial-section partial-other-wrapper" data-section="tab1"> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">表1</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/tab1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 符号和它们的定义。</d我v> <a class="table-thumb-overlay" href="//www.newsama.com/journals/wcmc/2018/4801465/tab1" target="_blank" aria-label="View full page"></a> </div> </div> <p><i>(</我><i>1)目标</我> <svg height="9.25202pt" id="M147" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg><i>的瞬态集群</我>。我们已经定义,设备有可能将数据转移到另一个装置只有在它们之间的路径是不超过2啤酒花。因此<svg height="9.25202pt" id="M148" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>可以把数据传输到目的地吗<svg height="9.49473pt" id="M149" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M530 686C535 705 530 712 521 712C504 712 448 684 359 674L358 648H393C437 648 439 646 429 593L400 435C372 447 345 448 332 448C286 448 194 414 144 373C68 311 23 203 23 111C23 26 57 -12 91 -12C120 -12 147 3 188 29C227 54 290 102 341 170H343L322 71C308 6 320 -12 341 -12C373 -12 442 27 501 96L485 120C455 91 422 67 408 67C401 67 401 76 404 91C440 294 479 473 530 686ZM387 375L355 241C326 187 200 53 142 53C126 53 109 73 109 130C109 217 154 337 218 381C240 396 265 404 297 404S372 390 387 375Z" id="g113-101"></path> </g> </svg>通过两条路径,如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig3/" target="_blank">3</a>。是第一个路线<svg height="9.25202pt" id="M150" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>直接传输数据<span class="nowrap"> <svg height="9.49473pt" id="M151" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>。</span>第二个途径是<svg height="9.25202pt" id="M152" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>间接地传输数据<svg height="9.49473pt" id="M153" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>通过一个设备<span class="nowrap"> <svg height="11.4899pt" id="M154" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <path d="M400 606C400 634 383 656 353 656C316 656 294 620 294 593C294 564 317 545 343 545C375 545 400 573 400 606ZM366 351C379 413 381 451 356 451C323 451 251 408 183 341L199 313C223 335 267 365 277 365C285 365 284 354 277 312C245 132 222 27 193 -100C182 -148 160 -188 131 -188C113 -188 90 -178 75 -170C64 -164 55 -168 48 -175C38 -185 24 -203 24 -222S48 -257 71 -257C89 -257 131 -241 186 -192C243 -141 286 -46 310 74L366 351Z" id="g50-107"></path> </g> </svg>,</span>的成员是谁<svg height="9.25202pt" id="M155" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>集群的瞬态。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-17c854365a0c4c5563b0b31366f29f67"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.003.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-17c854365a0c4c5563b0b31366f29f67 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.003_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-17c854365a0c4c5563b0b31366f29f67 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图3</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig3/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 目的地是一个参与者的瞬态集群。</d我v> </div> </div> </div> <p>本文数据转发取决于机会之间的连接设备。我们假设感知数据的规模很小,而且它可以完全转移在一个接触和传输时间可以忽略。因此设备的概率约束的时间内将数据传输到目的地的概率等于联系目的地的时间内约束。ICT设备之间分布的实际流动痕迹显示了一些概率分布模型。我们使用个人成对ICT分布的概率计算设备直接或间接接触的目的地的时间内约束和使用<svg height="14.8173pt" id="M156" style="vertical-align:-5.52897pt" version="1.1" viewbox="-0.0498162 -9.28833 13.1623 14.8173" width="13.1623pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z" id="g113-103"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.721,3.132)"> <use xlink:href="#g50-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.602,3.132)"> <use xlink:href="#g50-107"></use> </g> </svg>代表ICT设备之间的分布<svg height="9.25202pt" id="M157" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>和<span class="nowrap"> <svg height="11.4899pt" id="M158" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-107"></use> </g> </svg>。</span></p> <p>的概率<svg height="14.6294pt" id="M159" style="vertical-align:-5.34107pt" version="1.1" viewbox="-0.0498162 -9.28833 33.2767 14.6294" width="33.2767pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <path d="M256 606C256 635 239 657 207 657C171 657 147 619 147 593C147 563 173 543 194 543C234 543 256 573 256 606ZM233 98L216 125C191 101 156 75 139 75C133 75 132 82 139 107L214 377C226 420 224 454 198 454C169 454 98 415 31 351L46 323C81 353 110 372 116 372C129 372 126 356 121 338L57 101C31 5 47 -12 72 -12C115 -12 197 52 233 98Z" id="g176-106"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.132)"> <path d="M538 684C542 703 539 710 529 710C512 710 455 682 363 674L361 644H396C444 644 448 642 438 594L405 438C373 450 347 451 336 451C288 451 200 416 147 374C69 312 24 207 24 113C24 29 60 -12 94 -12C126 -12 156 4 196 30C231 53 296 100 346 166H348L328 81C311 10 325 -12 348 -12C380 -12 450 24 512 98L495 125C466 97 431 70 417 70C408 70 408 80 411 98L538 684ZM390 373L361 240C336 196 210 56 145 56C132 56 113 73 113 131C113 216 156 338 220 379C243 394 266 402 303 402C331 402 375 388 390 373Z" id="g50-101"></path> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,28.604,0)"> <use xlink:href="#g113-42"></use> </g> </svg>那<svg height="9.25202pt" id="M160" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系人<svg height="9.49473pt" id="M161" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在时间约束<svg height="8.02022pt" id="M162" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> </svg>包含两个部分:直接或间接接触的概率<我>d</我>。<svg height="14.6294pt" id="M163" style="vertical-align:-5.34107pt" version="1.1" viewbox="-0.0498162 -9.28833 33.2767 14.6294" width="33.2767pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.132)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,28.604,0)"> <use xlink:href="#g113-42"></use> </g> </svg>通过计算<span class="equation_break" id="EEq1"><span class="left_break" id="L164"></span><span class="middle_break"><span class="center_break" id="M164"> <svg height="31.6397pt" id="M164-1" version="1.1" viewbox="0 0 154.978 31.6397" width="154.978pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B164-1"> <g transform="matrix(.013,0,0,-0.013,0,12.78)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.65,15.912)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.63,18.013)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14,15.912)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,21.85,12.963)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,26.36,12.78)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,30.8,12.963)"> <use xlink:href="#g113-42"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.96,12.78)"> <path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z" id="g117-34"></path> </g> <g transform="matrix(.013,0,0,-0.013,50.22,12.78)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,58.25,6.517)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,56.88,16.564)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,61.86,18.665)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,64.23,16.564)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,72.07,12.963)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,76.59,12.78)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,81.02,12.963)"> <use xlink:href="#g113-42"></use> </g> <g transform="matrix(.013,0,0,-0.013,88.46,12.78)"> <path d="M535 230V280H323V490H265V280H52V230H265V-3H323V230H535Z" id="g117-36"></path> </g> <g transform="matrix(.013,0,0,-0.013,102.76,12.787)"> <path d="M956 -188L922 -180C881 -295 847 -317 759 -317H196L640 311L259 873H678C777 873 812 865 833 838C853 816 869 781 885 721L918 727L902 932H77V907L514 253L53 -396V-421H902L956 -188Z" id="g119-73"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,99,26.429)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,103.97,28.53)"> <path d="M405 606C405 634 387 657 355 657C316 657 294 621 294 593C294 563 319 543 346 543C377 543 405 573 405 606ZM371 354C383 412 387 454 360 454C324 454 253 412 182 345L199 312C221 333 269 364 278 364C288 364 287 354 279 310L195 -97C185 -139 166 -179 137 -179C119 -179 94 -169 79 -164C68 -160 59 -160 52 -168C42 -177 25 -197 25 -216C25 -238 50 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transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,28.604,0)"> <use xlink:href="#g113-42"></use> </g> </svg>的概率是<svg height="9.25202pt" id="M167" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>直接接触<svg height="9.49473pt" id="M168" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在<我>t</我>,<svg height="19.2263pt" id="M169" style="vertical-align:-6.734599pt" version="1.1" viewbox="-0.0498162 -12.4917 33.2767 19.2263" width="33.2767pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-8.277)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,13.004,-6.176)"> <use xlink:href="#g176-107"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,4.525)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,6.626)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,4.525)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,28.604,0)"> <use xlink:href="#g113-42"></use> </g> </svg>的概率是<svg height="9.25202pt" id="M170" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>通过一个继电器装置<svg height="11.4899pt" id="M171" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-107"></use> </g> </svg>联系人<svg height="9.49473pt" id="M172" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在<我>t</我>,<我>D</我>是设备的<svg height="9.25202pt" id="M173" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>的瞬态集群的集群包含瞬态<我>d</我>。</p> <p>由于我们提出的计算方法是基于瞬态集群,集群瞬态时间之间的关系和有效时间的数据会影响时间约束的值的概率计算过程。如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig4/" target="_blank">4</a>,<svg height="11.1049pt" id="M174" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -7.81382 12.2163 11.1049" width="12.2163pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M387 400C387 425 348 451 303 451C247 451 176 414 132 376C69 322 24 228 24 148C24 43 74 -12 147 -12C211 -12 301 33 363 103L346 128C319 99 249 51 193 51C148 51 112 84 112 165C112 230 130 287 154 330C170 359 199 400 243 400C277 400 304 383 326 354C333 345 343 343 354 348C378 360 387 382 387 400Z" id="g50-100"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,8.111,3.132)"> <path d="M357 391C357 416 325 451 270 451C241 451 179 431 146 400C109 365 97 334 97 307C97 248 143 213 196 180C250 146 261 123 261 101C261 75 237 40 190 40C153 40 110 72 86 109C81 116 68 119 55 112C37 102 24 87 24 66C24 30 85 -12 137 -12C229 -12 331 62 331 140C331 189 304 218 236 260C197 284 164 309 164 346C164 381 194 400 220 400C259 400 282 380 304 350C310 342 321 339 330 344C347 353 357 372 357 391Z" id="g50-116"></path> </g> </svg>集群的开始时间是短暂的。<svg height="11.1049pt" id="M175" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -7.81382 11.9058 11.1049" width="11.9058pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.111,3.132)"> <use xlink:href="#g50-117"></use> </g> </svg>集群的结束时间是短暂的;因此<span class="inline_break"> <svg height="12.5794pt" id="M176" style="vertical-align:-3.29107pt" version="1.1" viewbox="-0.0498162 -9.28833 26.923 12.5794" width="26.923pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.292,0)"> <path d="M535 230V280H52V230H535Z" id="g117-33"></path> </g> </svg><span class="ibiop"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="29.7781838 -9.28833 16.76 12.5794" width="16.76pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,29.828,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,34.196,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,37.939,3.132)"> <use xlink:href="#g50-116"></use> </g> <g transform="matrix(.013,0,0,-0.013,41.928,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>瞬态集群的持续时间。<svg height="11.1049pt" id="M177" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -7.81382 8.83674 11.1049" width="8.83674pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M398 365C398 411 356 451 297 451C250 451 198 430 151 397C65 336 24 230 24 139C24 14 97 -12 148 -12C198 -12 284 7 373 104L355 130C306 84 246 53 198 53C132 53 111 109 111 163V189C209 211 398 261 398 365ZM317 351C317 308 273 262 117 225C134 338 189 383 221 399C230 404 249 407 263 407C295 407 317 389 317 351Z" id="g50-102"></path> </g> </svg>设备进行数据的时间遇到另一个设备。<svg height="11.1232pt" id="M178" style="vertical-align:-3.309381pt" version="1.1" viewbox="-0.0498162 -7.81382 9.10161 11.1232" width="9.10161pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,4.368,3.132)"> <path d="M219 86C216 168 211 250 206 337C201 410 189 448 163 448C131 448 79 396 43 344L60 322C91 359 110 375 118 375S132 358 136 298C141 238 152 81 155 -12H182C242 62 331 177 390 258C435 321 451 360 451 391C450 424 432 448 408 448C390 448 372 435 366 419C362 410 362 401 366 394C373 383 376 367 376 350C376 283 262 138 221 86H219Z" id="g185-40"></path> </g> </svg>是数据的有效时间的最后期限。第一个关系是<svg height="11.5564pt" id="M179" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 15.3928 11.5564" width="15.3928pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-50"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.738,0)"> <use xlink:href="#g113-42"></use> </g> </svg>集群的持续时间比数据的有效时间长。第二个关系是<svg height="11.5564pt" id="M180" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 15.3928 11.5564" width="15.3928pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-51"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.738,0)"> <use xlink:href="#g113-42"></use> </g> </svg>集群的持续时间比数据的有效时间短,在这种情况下数据的时间约束<span class="inline_break"> <svg height="12.5794pt" id="M181" style="vertical-align:-3.29107pt" version="1.1" viewbox="-0.0498162 -9.28833 26.923 12.5794" width="26.923pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.292,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="29.7781838 -9.28833 13.38 12.5794" width="13.38pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,29.828,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,34.196,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.549,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-94b2905f4e00bea656df2c5be634589a"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.004.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-94b2905f4e00bea656df2c5be634589a partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.004_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-94b2905f4e00bea656df2c5be634589a partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图4</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig4/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 集群的持续时间之间的关系和数据的有效时间。</d我v> </div> </div> </div> <p>在第一个关系<span class="inline_break"> <svg height="12.5977pt" id="M182" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 27.649 12.5977" width="27.649pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,20.018,0)"> <path d="M512 230V281L75 514V456L453 256V254L75 55V-3L512 230Z" id="g117-92"></path> </g> </svg><span class="irelop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="31.2311838 -9.28833 13.645 12.5977" width="13.645pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,31.281,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,35.649,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.267,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>、持续时间的瞬态集群比数据的有效时间长。方程(<a href="#EEq2">3</a>这种情况的概率是,<svg height="12.7178pt" id="M183" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 11.0981 12.7178" width="11.0981pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-103"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.721,3.132)"> <use xlink:href="#g50-100"></use> </g> </svg>持续时间的分布的瞬态集群。在这种情况下,真正的约束数据的时间<span class="inline_break"> <svg height="12.5977pt" id="M184" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 24.119 12.5977" width="24.119pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,16.488,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="26.974183800000002 -9.28833 13.38 12.5977" width="13.38pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,27.024,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,31.392,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,35.745,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>。方程(<a href="#EEq2">4</a>)的概率是<span class="inline_break"> <svg height="17.5849pt" id="M185" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -11.5914 35.855 17.5849" width="35.855pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-50"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.891,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="17.5849pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="37.9841838 -11.5914 13.686 17.5849" width="13.686pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,38.034,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.403,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,47.02,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>那<svg height="9.25202pt" id="M186" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系人<svg height="9.49473pt" id="M187" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在这种情况下数据的有效时间。<span class="inline_break"> <svg height="14.6294pt" id="M188" style="vertical-align:-5.34107pt" version="1.1" viewbox="-0.0498162 -9.28833 43.791 14.6294" width="43.791pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.132)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.637,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,36.16,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="14.6294pt" style="vertical-align:-5.34107pt" version="1.1" viewbox="46.6471838 -9.28833 13.405 14.6294" width="13.405pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,46.697,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,51.065,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,55.418,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>的概率是<svg height="9.25202pt" id="M189" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系人d在时间约束<span class="inline_break"> <svg height="12.5977pt" id="M190" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 24.119 12.5977" width="24.119pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,16.488,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="26.974183800000002 -9.28833 13.38 12.5977" width="13.38pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,27.024,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,31.392,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,35.745,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>。</p> <p>研究<span class="nowrap"> <svg height="12.7178pt" id="M191" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 11.0981 12.7178" width="11.0981pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-103"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.721,3.132)"> <use xlink:href="#g50-100"></use> </g> </svg>,</span>我们在两个真实数据集上运行TCDM, Infocom6 [<a href="#B19">29日</a>)和剑桥(<a href="#B20">30.</a>]。这两个数据集的详细信息见表<a href="//www.newsama.com/journals/wcmc/2018/4801465/tab1/" target="_blank">1</a>。我们观察一个瞬态集群的持续时间在日常生活中,找到它的分布可以用指数分布近似。我们把一个瞬态集群在剑桥跟踪为例,如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig5/" target="_blank">5</a>。近似似乎并不完美,因为用来训练样本的分布是有限的。如果使用更多的数据应该是更好。<span class="equation_break" id="EEq2"><span class="left_break" id="L192"></span><span class="middle_break"><span class="center_break" id="M192"> <svg height="57.5655pt" id="M192-1" version="1.1" viewbox="0 0 145.783 57.5655" width="145.783pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B192-1"> <g transform="matrix(.013,0,0,-0.013,0,17.753)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.65,20.885)"> <use xlink:href="#g50-100"></use> </g> <g 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xlink:href="#B192-3"></use> <use transform="matrix(1 0 0 1 13.59 25.45)" xlink:href="#B192-4"></use> </svg></span></span><span class="right_break" id="R192"> <svg class="label" height="11.44pt" id="M192-2" version="1.1" viewbox="0 0 14.868 11.44" width="14.868pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B192-2"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <path d="M269 381C298 400 325 421 340 436C360 455 370 476 370 504C370 579 313 635 223 635H222C170 635 123 610 95 579L52 516L72 497C95 533 136 577 193 577C245 577 286 546 286 482C286 408 218 369 127 339L133 314C149 319 174 325 197 325C254 325 324 285 324 192C325 83 266 39 201 39C143 39 103 68 78 91C70 98 62 97 54 91C45 84 33 71 32 58C30 46 34 35 48 22C61 10 102 -12 148 -12C216 -12 410 57 410 225C410 298 357 362 269 379V381Z" id="g190-232"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.37,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg> <svg class="label" height="11.44pt" id="M192-5" version="1.1" viewbox="0 0 15.458 11.44" width="15.458pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B192-5"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <path d="M465 179V225H369V632H330C227 497 124 346 29 205V179H289V107C289 37 284 33 198 26V0H454V26C374 33 369 37 369 107V179H465ZM289 225H92C156 335 222 430 287 520H289V225Z" id="g190-166"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.96,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg> <svg class="alt_label" height="82.3665pt" id="IL192" version="1.1" viewbox="0 0 15.52 82.3665" width="15.52pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <use transform="matrix(1 0 0 1 0 9.36)" xlink:href="#B192-2"></use> <use transform="matrix(1 0 0 1 0 54.98)" xlink:href="#B192-5"></use> </svg></span></span>第二个关系<span class="inline_break"> <svg height="12.5977pt" id="M193" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 27.649 12.5977" width="27.649pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,20.018,0)"> <path d="M531 71V127L115 310L531 494V550L57 335V285L531 71ZM531 -40V10H57V-40H531Z" id="g117-93"></path> </g> </svg><span class="irelop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="31.2311838 -9.28833 13.645 12.5977" width="13.645pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,31.281,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,35.649,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.267,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>是瞬态集群的持续时间小于数据的有效时间。方程(<a href="#EEq4">5</a>是这种情况的概率。在这种情况下,真正的约束数据的时间<span class="inline_break"> <svg height="12.5794pt" id="M194" style="vertical-align:-3.29107pt" version="1.1" viewbox="-0.0498162 -9.28833 26.923 12.5794" width="26.923pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.292,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="29.7781838 -9.28833 13.38 12.5794" width="13.38pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,29.828,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,34.196,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.549,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>。方程(<a href="#EEq4">6</a>)的概率是<span class="inline_break"> <svg height="17.5849pt" id="M195" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -11.5914 35.855 17.5849" width="35.855pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.891,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="17.5849pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="37.9841838 -11.5914 13.686 17.5849" width="13.686pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,38.034,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.403,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,47.02,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>那<svg height="9.25202pt" id="M196" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系人<svg height="9.49473pt" id="M197" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在这种情况下数据的有效时间。<span class="inline_break"> <svg height="14.6294pt" id="M198" style="vertical-align:-5.34107pt" version="1.1" viewbox="-0.0498162 -9.28833 46.595 14.6294" width="46.595pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.132)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.637,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,32.38,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.964,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="14.6294pt" style="vertical-align:-5.34107pt" version="1.1" viewbox="49.451183799999995 -9.28833 13.405 14.6294" width="13.405pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,49.501,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,53.869,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,58.222,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>的概率是<svg height="9.25202pt" id="M199" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系人<svg height="9.49473pt" id="M200" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在时间约束<span class="inline_break"> <svg height="12.5794pt" id="M201" style="vertical-align:-3.29107pt" version="1.1" viewbox="-0.0498162 -9.28833 26.923 12.5794" width="26.923pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.292,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="12.5794pt" style="vertical-align:-3.29107pt" version="1.1" viewbox="29.7781838 -9.28833 13.38 12.5794" width="13.38pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,29.828,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,34.196,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.549,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>。<span class="equation_break" id="EEq4"><span class="left_break" id="L202"></span><span class="middle_break"><span class="center_break" id="M202"> <svg height="58.7608pt" id="M202-1" version="1.1" viewbox="0 0 169.343 58.7608" width="169.343pt" xmlns="http://www.w3.org/2000/svg" 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transform="matrix(.0091,0,0,-0.0091,130.28,29.578)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,133.4,31.679)"> <use xlink:href="#g176-100"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,136.1,31.679)"> <use xlink:href="#g176-116"></use> </g> <g transform="matrix(.013,0,0,-0.013,144.54,18.968)"> <use xlink:href="#g113-103"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,151.26,22.1)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.013,0,0,-0.013,157.69,18.968)"> <use xlink:href="#g113-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,164.91,18.968)"> <use xlink:href="#g113-117"></use> </g> </g> </svg> <svg height="58.7608pt" id="M202-3" version="1.1" viewbox="0 0 54.725 58.7608" width="54.725pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B202-3"> <g transform="matrix(.013,0,0,-0.013,0,52.767)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.03,46.504)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.66,56.551)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.63,58.652)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14,56.551)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,21.85,52.767)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,26.87,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,31.24,55.899)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,35.6,52.767)"> <use xlink:href="#g113-45"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.74,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,45.11,55.899)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,49.72,52.767)"> <use xlink:href="#g119-6"></use> </g> </g> </svg> <svg height="58.7608pt" id="M202-4" version="1.1" viewbox="0 0 176.405 58.7608" width="176.405pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B202-4"> <g transform="matrix(.013,0,0,-0.013,0,52.767)"> <use xlink:href="#g117-34"></use> </g> <g transform="matrix(.013,0,0,-0.013,11.27,52.767)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,17.92,55.899)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,22.9,58)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,25.27,55.899)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,33.12,52.767)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.14,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.51,55.899)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,46.25,55.899)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,52.84,52.767)"> <use xlink:href="#g117-33"></use> </g> <g transform="matrix(.013,0,0,-0.013,63.37,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,67.74,55.899)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,72.09,52.767)"> <use xlink:href="#g119-6"></use> </g> <g transform="matrix(.013,0,0,-0.013,79.36,52.767)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,86.01,55.899)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.013,0,0,-0.013,92.45,52.767)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,97.47,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,101.84,55.899)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,109.1,52.767)"> <use xlink:href="#g117-33"></use> </g> <g transform="matrix(.013,0,0,-0.013,119.63,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,124,55.899)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,127.74,55.899)"> <use xlink:href="#g50-116"></use> </g> <g transform="matrix(.013,0,0,-0.013,131.73,52.767)"> <use xlink:href="#g113-45"></use> </g> <g transform="matrix(.013,0,0,-0.013,136.88,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,141.24,55.899)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,148.77,52.767)"> <use xlink:href="#g117-33"></use> </g> <g transform="matrix(.013,0,0,-0.013,159.3,52.767)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,163.67,55.899)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,167.41,55.899)"> <use xlink:href="#g50-116"></use> </g> <g transform="matrix(.013,0,0,-0.013,171.4,52.767)"> <use xlink:href="#g119-6"></use> </g> </g> </svg> <svg class="alt_equation" height="83.5618pt" id="I202" version="1.1" viewbox="0 0 180.27 83.5618" width="180.27pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <use transform="matrix(1 0 0 1 0 0)" xlink:href="#B202-1"></use> <use transform="matrix(1 0 0 1 0 0)" xlink:href="#B202-3"></use> <use transform="matrix(1 0 0 1 3.63 25.45)" xlink:href="#B202-4"></use> </svg></span></span><span class="right_break" id="R202"> <svg class="label" height="11.44pt" id="M202-2" version="1.1" viewbox="0 0 14.898 11.44" width="14.898pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B202-2"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <path d="M130 550H367L393 615L386 623H101L63 323C82 331 123 342 165 342C275 342 328 277 328 188C328 107 283 40 201 40C141 40 99 72 78 91C69 99 59 98 51 91C39 81 30 67 29 58C28 48 33 37 46 24C60 10 104 -12 149 -12C203 -11 269 14 323 59C384 109 412 165 412 225C412 308 347 399 219 399C193 399 146 382 104 367L130 550Z" id="g190-161"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.4,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg> <svg class="label" height="11.44pt" id="M202-5" version="1.1" viewbox="0 0 15.428 11.44" width="15.428pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B202-5"> <g transform="matrix(.013,0,0,-0.013,0,9.25)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.49,9.25)"> <path d="M143 344C173 483 265 547 326 576C363 593 402 605 434 611L429 641C389 634 343 623 301 608C195 570 43 456 43 236C43 81 135 -12 245 -12C368 -12 453 88 453 208C453 310 380 393 273 393C253 393 232 386 211 376L143 344ZM234 338C325 338 367 255 367 172C367 102 346 21 264 21C184 21 132 113 132 239C132 267 133 291 138 312C164 327 197 338 234 338Z" id="g190-227"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.93,9.25)"> <use xlink:href="#g190-42"></use> </g> </g> </svg> <svg class="alt_label" height="83.5618pt" id="IL202" version="1.1" viewbox="0 0 15.49 83.5618" width="15.49pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <use transform="matrix(1 0 0 1 0 9.96)" xlink:href="#B202-2"></use> <use transform="matrix(1 0 0 1 0 56.18)" xlink:href="#B202-5"></use> </svg></span></span>总之,(<a href="#EEq6">7</a>)的概率是<span class="inline_break"> <svg height="14.6294pt" id="M203" style="vertical-align:-5.34107pt" version="1.1" viewbox="-0.0498162 -9.28833 39.867 14.6294" width="39.867pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.132)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.233)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.132)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.236,0)"> <use xlink:href="#g117-93"></use> </g> </svg><span class="irelop"></span> <svg height="14.6294pt" style="vertical-align:-5.34107pt" version="1.1" viewbox="43.4491838 -9.28833 13.703 14.6294" width="13.703pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,43.499,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,47.867,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,52.484,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>那<svg height="9.25202pt" id="M204" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系目的地期满前数据的有效时间。<span class="equation_break" id="EEq6"><span class="left_break" id="L205"></span><span class="middle_break"><span class="center_break" id="M205"> <svg height="18.1068pt" id="M205-1" version="1.1" viewbox="0 0 129.895 18.1068" width="129.895pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B205-1"> <g transform="matrix(.013,0,0,-0.013,0,12.113)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.65,15.245)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.63,17.346)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14,15.245)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,21.85,12.113)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,26.87,12.113)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,34.94,12.113)"> <use xlink:href="#g117-93"></use> </g> <g transform="matrix(.013,0,0,-0.013,46.2,12.113)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,50.57,15.245)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,55.19,12.113)"> <use xlink:href="#g119-6"></use> </g> <g transform="matrix(.013,0,0,-0.013,63.9,12.113)"> <use xlink:href="#g117-34"></use> </g> <g transform="matrix(.013,0,0,-0.013,75.17,12.113)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,83.19,5.85)"> <use xlink:href="#g50-50"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,81.82,15.897)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,86.8,17.998)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,89.17,15.897)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,97.02,12.113)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,102.04,12.113)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,106.41,15.245)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,110.76,12.113)"> <use xlink:href="#g113-45"></use> </g> <g transform="matrix(.013,0,0,-0.013,115.91,12.113)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,120.27,15.245)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,124.89,12.113)"> <use xlink:href="#g119-6"></use> </g> </g> </svg> <svg height="18.1068pt" id="M205-2" version="1.1" viewbox="0 0 65.265 18.1068" width="65.265pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B205-2"> <g transform="matrix(.013,0,0,-0.013,0,12.113)"> <use xlink:href="#g117-36"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.53,12.113)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,18.56,5.85)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,17.19,15.897)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,22.17,17.998)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,24.54,15.897)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.38,12.113)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,37.41,12.113)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,41.78,15.245)"> <use xlink:href="#g50-102"></use> </g> <g 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xlink:href="#g190-42"></use> </g> </g> </svg></span></span></p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-d3201f538bec0284c9ef605c5a48bd6e"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.005.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-d3201f538bec0284c9ef605c5a48bd6e partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.005_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-d3201f538bec0284c9ef605c5a48bd6e partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图5</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig5/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 瞬态的PDF集群的持续时间。</d我v> </div> </div> </div> <p><i>(</我><i>2)目标</我> <svg height="9.25202pt" id="M206" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg><i>相邻的瞬态集群</我>。我们讨论的情况,目的地<svg height="9.49473pt" id="M207" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>不在<svg height="9.25202pt" id="M208" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>的瞬态集群,但是<svg height="9.25202pt" id="M209" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>相邻的瞬态集群。图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig6/" target="_blank">6</a>显示了一个例子,<svg height="9.49473pt" id="M210" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>是在<svg height="9.25202pt" id="M211" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>相邻的集群<span class="nowrap"> <svg height="14.4911pt" id="M212" style="vertical-align:-5.52898pt" version="1.1" viewbox="-0.0498162 -8.96212 11.7283 14.4911" width="11.7283pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-85"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"> <use xlink:href="#g50-107"></use> </g> </svg>。</span> <svg height="9.25202pt" id="M213" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>可以传输数据<svg height="9.49473pt" id="M214" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>通过<span class="nowrap"> <svg height="11.4899pt" id="M215" style="vertical-align:-5.52899pt" version="1.1" viewbox="-0.0498162 -5.96091 11.4804 11.4899" width="11.4804pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-107"></use> </g> </svg>。</span>的概率<svg height="17.4296pt" id="M216" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -11.4361 33.2767 17.4296" width="33.2767pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <path d="M310 541L304 571C290 586 211 619 185 610L80 76L131 52L310 541Z" id="g50-31"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,28.604,0)"> <use xlink:href="#g113-42"></use> </g> </svg>那<svg height="9.25202pt" id="M217" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>遇到目的地<svg height="9.49473pt" id="M218" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>在时间约束<svg height="8.02022pt" id="M219" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> </svg>只有通过间接接触计算(<a href="#EEq7">8</a>),其中T是设备的<svg height="9.25202pt" id="M220" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>的瞬态瞬态包含集群的集群<我>d</我>。<span class="equation_break" id="EEq7"><span class="left_break" id="L221"></span><span class="middle_break"><span class="center_break" id="M221"> <svg height="31.4974pt" id="M221-1" version="1.1" viewbox="0 0 107.218 31.4974" width="107.218pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B221-1"> <g transform="matrix(.013,0,0,-0.013,0,12.492)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.02,6.228)"> <use xlink:href="#g50-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.65,16.276)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.63,18.377)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14,16.276)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,21.85,12.674)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,26.36,12.492)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,30.8,12.674)"> <use xlink:href="#g113-42"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.96,12.492)"> <use xlink:href="#g117-34"></use> </g> <g transform="matrix(.013,0,0,-0.013,53.4,12.498)"> <use xlink:href="#g119-73"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,50.22,26.287)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,55.2,28.388)"> <use xlink:href="#g176-107"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,58.54,26.287)"> <use xlink:href="#g54-173"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,63.81,26.287)"> <path d="M655 676H628C608 656 600 650 571 650H156C118 650 114 651 102 676H77C63 615 45 548 24 485L60 486C81 531 97 562 114 580C134 603 148 611 252 611H308L217 127C201 41 196 38 105 32L98 0H384L393 32C300 38 288 41 304 127L393 611H466C553 611 571 604 582 580C592 559 597 530 595 485L630 489C636 548 645 624 655 676Z" id="g50-85"></path> </g> <g transform="matrix(.013,0,0,-0.013,71.92,12.492)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,79.95,4.215)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,84.92,6.316)"> <use xlink:href="#g176-107"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,78.58,17.017)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,83.55,19.118)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,85.92,17.017)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,93.77,12.674)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,98.29,12.492)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,102.72,12.674)"> <use xlink:href="#g113-42"></use> </g> </g> </svg></span></span><span class="right_break" id="R221"> <svg class="label" height="11.44pt" id="M221-2" version="1.1" viewbox="0 0 15.168 11.44" width="15.168pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B221-2"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <path d="M246 635C138 635 67 554 67 471C67 401 116 348 178 315C143 296 103 268 87 252C65 231 42 203 42 157C42 50 128 -12 234 -12C319 -12 432 52 432 169C432 256 370 303 299 344C347 376 373 399 381 408C399 430 408 459 408 487C408 569 341 635 246 635ZM235 603C284 603 334 567 334 483C334 420 306 383 273 358C202 393 142 427 142 503C142 552 173 603 235 603ZM245 21C179 21 122 70 122 163C122 219 155 270 204 300C279 263 352 219 352 144C352 66 308 21 245 21Z" id="g190-152"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.67,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg></span></span>概率的计算是基于瞬态集群。时间之间的关系,在此期间,目的地是在投机取巧的连接设备的相邻瞬态集群,和数据的有效时间原因两种可能。这是类似于部分<a href="#sec4.2">4.2</a>(1)。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-a4a2671e6d6cd258e2c879d38391f06d"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.006.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-a4a2671e6d6cd258e2c879d38391f06d partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.006_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-a4a2671e6d6cd258e2c879d38391f06d partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图6</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig6/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 目标设备的相邻的集群。</d我v> </div> </div> </div> <p>当<span class="inline_break"> <svg height="12.5977pt" id="M222" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 27.649 12.5977" width="27.649pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,20.018,0)"> <use xlink:href="#g117-92"></use> </g> </svg><span class="irelop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="31.2311838 -9.28833 13.645 12.5977" width="13.645pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,31.281,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,35.649,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.267,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>,(<a href="#EEq8">9</a>)的概率是<span class="inline_break"> <svg height="19.9989pt" id="M223" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -14.0054 35.855 19.9989" width="35.855pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-50"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,12.458,-9.852)"> <path d="M323 549L316 585C302 600 218 636 190 624L84 81L142 54L323 549Z" id="g176-31"></path> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.891,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="19.9989pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="37.9841838 -14.0054 13.686 19.9989" width="13.686pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,38.034,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.403,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,47.02,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>那<svg height="9.25202pt" id="M224" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>遇到<我>d</我>,在这种情况下,瞬态集群的持续时间长于数据的有效时间,在什么地方<span class="inline_break"> <svg height="17.4296pt" id="M225" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -11.4361 43.693 17.4296" width="43.693pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,36.062,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="17.4296pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="46.5481838 -11.4361 13.439 17.4296" width="13.439pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,46.598,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,50.966,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,55.319,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>基于计算(<a href="#EEq7">8</a>)。<span class="equation_break" id="EEq8"><span class="left_break" id="L226"></span><span class="middle_break"><span class="center_break" id="M226"> <svg height="30.592pt" id="M226-1" version="1.1" viewbox="0 0 54.725 30.592" width="54.725pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B226-1"> <g transform="matrix(.013,0,0,-0.013,0,17.753)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.03,11.49)"> <use xlink:href="#g50-50"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,12.46,7.379)"> <use xlink:href="#g176-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.66,21.537)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.63,23.638)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14,21.537)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,21.85,17.753)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,26.88,17.753)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,31.24,20.885)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,35.6,17.753)"> <use xlink:href="#g113-45"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.74,17.753)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,45.11,20.885)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,49.72,17.753)"> <use xlink:href="#g119-6"></use> </g> </g> </svg> <svg height="30.592pt" id="M226-2" version="1.1" viewbox="0 0 131.253 30.592" width="131.253pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B226-2"> <g transform="matrix(.013,0,0,-0.013,0,17.753)"> <use xlink:href="#g117-34"></use> </g> <g transform="matrix(.013,0,0,-0.013,11.27,17.753)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,19.29,11.49)"> <use xlink:href="#g50-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,17.92,21.537)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,22.9,23.638)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,25.27,21.537)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,33.12,17.753)"> <use xlink:href="#g119-5"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.14,17.753)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.51,20.885)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,50.03,17.753)"> <use xlink:href="#g117-33"></use> </g> <g transform="matrix(.013,0,0,-0.013,60.57,17.753)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,64.94,20.885)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,69.29,17.753)"> <use xlink:href="#g119-6"></use> </g> <g transform="matrix(.013,0,0,-0.013,76.56,17.766)"> <use xlink:href="#g119-89"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,85.31,4.215)"> <use xlink:href="#g50-30"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,82.77,28.363)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,85.88,30.464)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,89.32,28.363)"> <use xlink:href="#g54-33"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,94.88,28.363)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,97.99,30.464)"> <use xlink:href="#g176-100"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,100.7,30.464)"> <use xlink:href="#g176-116"></use> </g> <g transform="matrix(.013,0,0,-0.013,106.46,17.753)"> <use xlink:href="#g113-103"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,113.18,20.885)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.013,0,0,-0.013,119.61,17.753)"> <use xlink:href="#g113-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,126.82,17.753)"> <use xlink:href="#g113-117"></use> </g> </g> </svg></span></span><span class="right_break" id="R226"> <svg class="label" height="11.44pt" id="M226-3" version="1.1" viewbox="0 0 15.338 11.44" width="15.338pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B226-3"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <path d="M247 635C117 635 41 518 41 422C41 317 114 239 220 239C239 239 256 244 278 255L348 290C315 139 207 37 63 13L67 -15C93 -15 155 -5 207 17C343 71 443 203 443 385C443 520 371 635 247 635ZM231 602C331 602 355 476 355 390C355 371 354 349 351 325C334 310 298 294 261 294C177 294 128 369 128 457C128 516 155 602 231 602Z" id="g190-193"></path> </g> <g transform="matrix(.013,0,0,-0.013,10.84,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg></span></span>当<span class="inline_break"> <svg height="12.5977pt" id="M227" style="vertical-align:-3.30937pt" version="1.1" viewbox="-0.0498162 -9.28833 27.649 12.5977" width="27.649pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.498,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.964,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,12.708,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,20.018,0)"> <use xlink:href="#g117-93"></use> </g> </svg><span class="irelop"></span> <svg height="12.5977pt" style="vertical-align:-3.30937pt" version="1.1" viewbox="31.2311838 -9.28833 13.645 12.5977" width="13.645pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,31.281,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,35.649,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,40.267,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>,(<a href="#EEq9">10</a>)的概率是<span class="inline_break"> <svg height="19.9989pt" id="M228" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -14.0054 35.855 19.9989" width="35.855pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-51"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,12.458,-9.852)"> <use xlink:href="#g176-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,32.891,0)"> <use xlink:href="#g113-45"></use> </g> </svg><span class="ipunc"></span> <svg height="19.9989pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="37.9841838 -14.0054 13.686 19.9989" width="13.686pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,38.034,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,42.403,3.132)"> <use xlink:href="#g185-40"></use> </g> <g transform="matrix(.013,0,0,-0.013,47.02,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>那<svg height="9.25202pt" id="M229" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>遇到目的地<我>d</我>,在这种情况下,瞬态集群的持续时间小于数据的有效时间,在什么地方<span class="inline_break"> <svg height="17.4296pt" id="M230" style="vertical-align:-5.9935pt" version="1.1" viewbox="-0.0498162 -11.4361 46.497 17.4296" width="46.497pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-81"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,8.026,-5.741)"> <use xlink:href="#g50-31"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.656,3.784)"> <use xlink:href="#g50-118"></use> </g> <g transform="matrix(.0065,0,0,-0.0065,11.634,5.885)"> <use xlink:href="#g176-106"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,14.004,3.784)"> <use xlink:href="#g50-101"></use> </g> <g transform="matrix(.013,0,0,-0.013,19.673,0)"> <use xlink:href="#g113-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,24.171,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,28.539,3.132)"> <use xlink:href="#g50-100"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,32.282,3.132)"> <use xlink:href="#g50-117"></use> </g> <g transform="matrix(.013,0,0,-0.013,38.866,0)"> <use xlink:href="#g117-33"></use> </g> </svg><span class="ibiop"></span> <svg height="17.4296pt" style="vertical-align:-5.9935pt" version="1.1" viewbox="49.3521838 -11.4361 13.439 17.4296" width="13.439pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,49.402,0)"> <use xlink:href="#g113-117"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,53.77,3.132)"> <use xlink:href="#g50-102"></use> </g> <g transform="matrix(.013,0,0,-0.013,58.123,0)"> <use xlink:href="#g113-42"></use> </g> </svg></span>基于计算(<a href="#EEq7">8</a>)。总之,(<a href="#EEq9">11</a>)的概率是<svg height="9.25202pt" id="M231" style="vertical-align:-3.29111pt" version="1.1" viewbox="-0.0498162 -5.96091 10.1103 9.25202" width="10.1103pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-118"></use> </g> <g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"> <use xlink:href="#g50-106"></use> </g> </svg>联系目的地<svg height="9.49473pt" id="M232" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 7.34169 9.49473" width="7.34169pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-101"></use> </g> </svg>期满前数据的有效时间。<span class="equation_break" id="EEq9"><span class="left_break" id="L233"></span><span 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<use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <use xlink:href="#g190-213"></use> </g> <g transform="matrix(.013,0,0,-0.013,8.82,9.26)"> <path d="M248 635C97 635 43 457 43 311C43 153 97 -12 247 -12S450 166 450 312C450 466 397 635 248 635ZM246 603C337 603 361 452 361 312S337 20 248 20S132 172 132 313C132 452 156 603 246 603Z" id="g190-254"></path> </g> <g transform="matrix(.013,0,0,-0.013,15.23,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg> <svg class="label" height="11.44pt" id="M233-6" version="1.1" viewbox="0 0 17.788 11.44" width="17.788pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g id="B233-6"> <g transform="matrix(.013,0,0,-0.013,0,9.26)"> <use xlink:href="#g190-41"></use> </g> <g transform="matrix(.013,0,0,-0.013,4.5,9.26)"> <use xlink:href="#g190-213"></use> </g> <g transform="matrix(.013,0,0,-0.013,8.9,9.26)"> <use xlink:href="#g190-213"></use> </g> <g transform="matrix(.013,0,0,-0.013,13.29,9.26)"> <use xlink:href="#g190-42"></use> </g> </g> </svg></span></span></p> <h4 id="performance-evaluation">5。绩效评估</h4> <p>我们建议TCEM方法测量设备的数据转发能力。因为它基于瞬态集群,形成瞬态集群的性能会影响性能的方法。因此我们评估瞬态集群的性能检测方法(TCDM TCEM)。与此同时,我们评估TCEM-based数据转发策略的性能。在实验中,交货率的数据是数据项的比例,这是成功地送到目的地通过投机取巧到期之前转发数据。它提高了数据副本的数量增加,这代表了网络开销。因此,以反映效率,数据转发策略的性能评价的比例数据交货率的网络开销。</p> <p>我们的实验是基于两个真实数据集,Infocom6 [<a href="#B19">29日</a>)和剑桥(<a href="#B20">30.</a>]。这些数据集是基于设备定期检测同行通过蓝牙接口,和联系人记录当两个设备进入彼此的通信范围。两个数据集的详细信息如表所示<a href="//www.newsama.com/journals/wcmc/2018/4801465/tab2/" target="_blank">2</a>。</p> <div class="floats-partial-section partial-other-wrapper" data-section="tab2"> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">表2</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/tab2/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 跟踪总结。</d我v> <a class="table-thumb-overlay" href="//www.newsama.com/journals/wcmc/2018/4801465/tab2" target="_blank" aria-label="View full page"></a> </div> </div> <h5 id="sec5.1">5.1。瞬态集群评价</h5> <p>我们比较的性能TCDM集群有两个瞬态检测方法:Contact-burst-based聚类方法(CCM) [<a href="#B16">8</a>)和分布式兴衰时空(草案)聚类方法(<a href="#B12">7</a>]。除了分布式特性和该方法的可行性,集群的大小检测方法也会影响效率的数据转发策略,作为数据转发策略决定是否将数据转发到一个遇到的参与者通过搜索所有数字的参与者的集群。因此在这一节中,我们比较方法性能的三个指标:意味着集群大小,马克斯集群大小和使用集群规模评估转发功能。</p> <p><i>CCM</我>。它检测瞬态聚类对集群的节点具有类似联系一起爆发。两个节点之间的接触破裂是指一个时期接触频繁的出现在这两个节点。瞬态集群被CCM时变,集群的形成过程需要中央控制。</p> <p><i>草案</我>。它是分布式的。每个节点形成一个集群基于累积或腐烂的接触时间。它使用三个参数<span class="nowrap"> <svg height="6.1673pt" id="M234" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 6.40217 6.1673" width="6.40217pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M471 456L444 459C426 433 414 430 388 430C324 430 270 434 216 434C103 434 51 374 23 338L43 317C96 366 146 380 221 375L154 109C149 86 147 68 147 52C147 4 168 -12 197 -12C240 -12 291 25 334 71L320 96C295 75 268 58 252 58C238 58 227 79 238 138C251 211 272 296 292 372C310 372 332 368 350 368C391 368 421 369 434 371C444 388 455 413 471 456Z" id="g113-241"></path> </g> </svg>,</span><span class="nowrap"> <svg height="8.02022pt" id="M235" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -7.81382 4.54925 8.02022" width="4.54925pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-117"></use> </g> </svg>,</span> <svg height="9.49473pt" id="M236" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 6.84582 9.49473" width="6.84582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <path d="M494 514C482 587 419 712 303 712C238 712 174 667 174 603C174 561 205 514 249 449C219 438 187 422 162 407C93 366 23 283 23 177C23 69 87 -12 190 -12C244 -12 288 5 328 33C406 87 444 170 444 249C444 329 404 391 331 475C265 550 222 605 222 627C222 647 238 657 267 657C355 657 421 585 484 499L494 514ZM359 234C359 143 319 30 219 30C172 30 114 75 114 178C114 275 163 343 195 378C212 397 241 415 269 425C305 382 359 313 359 234Z" id="g113-226"></path> </g> </svg>管理集群成长的速度和衰减。如果累积联系持续时间长于<span class="nowrap"> <svg height="6.1673pt" id="M237" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 6.40217 6.1673" width="6.40217pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-241"></use> </g> </svg>,</span>遇到设备将被添加到集群。否则设备将被删除从集群。t秒的时间长度控制每个设备的累积时间的间隔是腐烂的。在每个时间,联系时间乘以参数下降<span class="nowrap"> <svg height="9.49473pt" id="M238" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 6.84582 9.49473" width="6.84582pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-226"></use> </g> </svg>。</span></p> <p>我们提议TCDM分布。每个设备形成一个时变瞬态集群,它包含一组设备,与他有接触率高。在这篇文章中,我们设置了一个装置,将添加一个设备遇到他短暂的集群中,只有这两个设备的intercontact时间低于预定的参数<span class="nowrap"> <svg height="6.1673pt" id="M239" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> </svg>。</span>的价值<svg height="6.1673pt" id="M240" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -5.96091 7.39387 6.1673" width="7.39387pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> </svg>设置基于痕迹的经验。</p> <p>在这两个数据集,我们发现每一个成对接触是一系列的接触爆发在两个设备的接触率高,两个设备intercontact时间低于1小时在这些接触爆发期。例如,我们选择剑桥的任何两个设备数据集。联系如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig7/" target="_blank">7</a>。箭头代表两个设备之间的联系。因此我们组<span class="inline_break"> <svg height="8.55521pt" id="M241" style="vertical-align:-0.2063904pt" version="1.1" viewbox="-0.0498162 -8.34882 18.53 8.55521" width="18.53pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,0,0)"> <use xlink:href="#g113-121"></use> </g> <g transform="matrix(.013,0,0,-0.013,10.899,0)"> <use xlink:href="#g117-34"></use> </g> </svg><span class="irelop"></span> <svg height="8.55521pt" style="vertical-align:-0.2063904pt" version="1.1" viewbox="22.1121838 -8.34882 6.419 8.55521" width="6.419pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g transform="matrix(.013,0,0,-0.013,22.162,0)"> <use xlink:href="#g113-50"></use> </g> </svg></span>。如果这两个设备没有在一小时内联系意味着两个设备的接触率不高,设备将被删除从另一个设备的瞬态集群。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-0e47ea50aafdfab000c8b98d7b062bb3"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.007.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-0e47ea50aafdfab000c8b98d7b062bb3 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.007_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-0e47ea50aafdfab000c8b98d7b062bb3 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图7</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig7/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 联系两个节点。</d我v> </div> </div> </div> <p><i>意味着集群大小</我>。图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig8/" target="_blank">8</a>表明TCDM的意思是集群大小这三种方法中是最小的。CCM的意思是集群规模是最大的,这几乎是三倍大于TCDM。我们说明了理由如下。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-38c1bc4d60141ce71d91fbf5708dd464"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.008a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.008b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-38c1bc4d60141ce71d91fbf5708dd464 partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.008a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.008b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-38c1bc4d60141ce71d91fbf5708dd464 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图8</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig8/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 意味着集群大小。</d我v> </div> </div> </div> <p>法草案,集群是device-centric单集群,但设备添加或删除从一个集群基于累积或衰变遇到持续时间。在这两个数据集,集群的草案将包含高接触率设备。例如,在Infocom6数据集,两个设备与高接触率的意思是这两个设备在接触破裂。设备之间的接触时间是24。两个参与者联系接触破裂期间6倍。因此,在一段接触破裂,两个设备的累积遇到持续时间是144年代,120年代超过预定的阈值。设备将被添加到另一个设备的集群。然而,由于设备从一个集群基于删除衰退持续时间,这可能导致集群,还积累了一些设备没有高接触率与中央设备现在,而成员TCDM集群设备,高接触率与核心设备。因此,集群被大于TCDM草案。</p> <p>草案的集群的平均尺寸小于CCM,因为集群检测方法草案旨在检测设备具有高接触频率与中央设备期间。这是一个单集群。然而在CCM任何两个设备高接触率持续时间;这段时间将被添加到一个集群。啤酒花没有限制。集群是绝对比草案。</p> <p>总之,与草案相比,尽管TCDM的集群形成的复杂性方法相似,TCDM集群大小小于草案。与CCM相比,除了集群大小TCDM更可行的和有效的。我们从两个方面展示它。首先CCM需要设备的提前联系信息。第二个集群在形成的过程中,CCM已遍历所有集群合并相似集群。这个过程浪费大量的计算资源和时间。然而,我们提议TCDM分布。每个设备形式他的瞬态集群只基于两个设备的实时联系频率。因此,与CCM, TCDM更可行的和有效的。</p> <p><i>马克斯集群大小</我>。图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig9/" target="_blank">9</a>显示了马克斯集群被这三种方法。马克斯集群TCDM和通风方法探测到小于集群CCM探测到。CCM的max集群包含超过一半的整个设备。它极其会增加计算的复杂性。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-9ee1333a1d43da43d36f9a639c720676"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.009a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.009b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-9ee1333a1d43da43d36f9a639c720676 partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.009a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.009b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-9ee1333a1d43da43d36f9a639c720676 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图9</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig9/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 马克斯集群大小。</d我v> </div> </div> </div> <p><i>集群的规模评估转发功能</我>。DRAFT-based和我们提出TFCM-based数据转发策略确定是否遇到设备转发数据是基于其2-hop集群。因此,设备的2-hop集群大小是非常重要的对于这两种方法的性能。然而,CCM-based数据转发策略是基于一个集群。因此,我们比较意味着2-hop TCDM集群大小和草案,和平均集群CCM的大小。图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig10/" target="_blank">10</a>显示我们的提议TCDM集群是最小的在这三个集群检测方法。它包括或多或少30%的所有设备,但草案2-hop集群包含几乎一半的设备和CCM的集群包含超过一半的所有设备。原因说明如下。首先,由于1-hop TCDM小于1-hop集群的集群的草案,2-hop TCDM小于2-hop集群的集群的草案。其次,在草案,一个集群包含2-hop参与者但一群CCM并不限制跳;因此CCM的集群大小大于草案。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-18b7e5cb9fa4012ba918f5ffe0dab353"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0010a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0010b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-18b7e5cb9fa4012ba918f5ffe0dab353 partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0010a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0010b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-18b7e5cb9fa4012ba918f5ffe0dab353 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图10</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig10/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 集群的规模评估转发功能。</d我v> </div> </div> </div> <p>总之,第一,我们提出的集群大小TCDM是最小的。它使判断设备的转发能力的效率通过搜索集群中的所有成员最好的。此外,与CCM相比,我们提出TCDM更加可行和更有效,因为它的分布和集群形成的简单方法。与汇票的集群相比,不能准确地表达在参与者之间接触率的变化,TCDM可以反映出改变设备的实时联系。自评估参与者的数据转发能力是基于设备之间的接触率,TCDM更准确的评估设备的转发能力。</p> <h5 id="sec5.2">5.2。数据转发性能评价</h5> <p>在实验中对公平来源和目的地是随机选择,和数据的生成时间是随机选择在白天因为节点的活动时间是晚上低,这可能会导致不准确的比较。性能是衡量指标:数据交货率网络开销的比例。我们建议TCEM-based数据转发策略与流行病[<a href="#B6">9</a>),泡沫说唱(<a href="#B4">4</a>],DRAFT-based [<a href="#B12">7</a>],CCM-based [<a href="#B16">8</a>数据转发策略。</p> <p><i>流行</我>。数据项是转发给每一个遇到的设备没有相同的数据。它是上界。</p> <p><i>泡沫说唱</我>。这种策略利用中心和社区。CPM (K-clique)是用于检测社区。数据项总是转发到一个更高的中心设备,直到到达一个装置,属于同一个社区的目的地。当数据项达到目的地社区,在社区内高转发到中心设备的范围,直到到达目的地。</p> <p><i>DRAFT-Based日期转发策略</我>。遇到的数据将被复制到设备的2-hop集群包含目的地之前进行数据设备遇到的目的地。</p> <p><i>CCM-Based数据转发策略</我>。它利用瞬态集群(TC)转发单元,和数据总是转发到TC更好的目的地在数据传送能力的时间约束。一旦数据达到一个新的TC大传送功能,数据分发到所有节点在TC。计算当前TC的传送能力的概率求和每个参与者TC出现在目的地的瞬态集群数据的有效时间内。进行数据设备删除数据时,他既没有遇到一个设备在TC大传送能力也不去与大TC传送能力在一个指定的时间段。上述过程结束当数据到达目的地或时间超过数据的有效时间。</p> <p>结果如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig11/" target="_blank">11</a>。考虑到交货率和泡沫的性能开销说唱是最差的与TCEM-based相比,DRAFT-based和CCM-based数据转发策略。原因是,这三个战略考虑设备的接触率时变,但泡沫说唱使用总联系信息不能反映设备数据的有效时间内的接触率。与其他三个数据转发策略相比,泡沫说唱的时间内无法准确评估设备的转发能力约束。因此,它的数据转发性能是最差的。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-cb7068b0a90b1c5d75fdf984da2aff47"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0011a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0011b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-cb7068b0a90b1c5d75fdf984da2aff47 partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0011a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0011b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-cb7068b0a90b1c5d75fdf984da2aff47 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图11</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig11/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 交货率的比例,开销。</d我v> </div> </div> </div> <p>比较与DRAFT-based CCM-based数据转发策略,我们提出TCEM-based数据转发策略的交货率是最低的,但与此同时它的开销也是最低如图<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig12/" target="_blank">12</a>和<a href="//www.newsama.com/journals/wcmc/2018/4801465/fig13/" target="_blank">13</a>。集成这两个参数的比例数据交货率最高的网络开销。首先,数据转发的草案和TCEM基于遇到设备的2-hop瞬态集群。草案的2-hop集群规模大于TCEM 2-hop集群,它包含TCEM集群的所有成员。数据转发过程中,草案将数据转发给所有遇到的设备其2-hop集群包含目的地,但TCEM遇到设备将数据转发到其2-hop集群包含目的地和遇到目的地的概率高于携带数据的参与者。TCEM-based数据转发策略减少了一些不必要的开销的复制数据到设备遇到目的地的概率很低。因此,尽管TCEM-based数据转发策略的数据交货率仍低于DRAFT-based数据转发策略,它大大减少了开销。</p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-a4a66da97ce204274152be79f97b10d2"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0012a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0012b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-a4a66da97ce204274152be79f97b10d2 partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0012a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0012b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-a4a66da97ce204274152be79f97b10d2 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图12</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig12/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 数据交货率。</d我v> </div> </div> </div> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-e6393ebb1e9d7ca4000e05d0d37a82fd"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0013a.jpg"> <br> <strong>(一)Infocom6</strong> </div> <div class="partial-carousel--single-image"> <img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/figures/4801465.fig.0013b.jpg"> <br> <strong>(b)剑桥</strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-e6393ebb1e9d7ca4000e05d0d37a82fd partial-carousel-thumbnail"> <button aria-label="Slide to (a) Infocom6" class="partial-carousel-dot"><img loading="lazy" alt="(一)Infocom6" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0013a_th.jpg"><br><strong>(一)Infocom6</strong></button> <button aria-label="Slide to (b) Cambridge" class="partial-carousel-dot"><img loading="lazy" alt="(b)剑桥" src="https://static.hindawi.com/articles/wcmc/volume-2018/4801465/thumbnails/4801465.fig.0013b_th.jpg"><br><strong>(b)剑桥</strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-e6393ebb1e9d7ca4000e05d0d37a82fd partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图13</span> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/wcmc/2018/4801465/fig13/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 网络开销。</d我v> </div> </div> </div> <p>第二,数据交货率和开销CCM-based数据转发策略是最高的。与草案TCEM只转发数据到遇到设备,CCM的数据转发是基于瞬态集群。数据分发到所有设备中遇到瞬态集群。与此同时,CCM的瞬态集群是最大的。它包含所有设备,直接或间接,经常接触遇到设备。考虑这两个方面的原因,CCM数据交货率是最高的,但是它的开销也很高。同时,因为在CCM策略进行数据设备删除数据时,他既没有遇到一个设备在TC大传送能力也不去与大TC传送能力在每一个指定时间,这将导致增加开销的数据可能会多次复制相同的设备。因此,CCM的开销非常高和数据交货率网络开销的比例是最低的。此外,CCM-based数据转发策略的计算复杂性非常高,因为它需要找到每个遇到设备当前的TC和计算的概率TC的每一个成员遇到目的地。</p> <p>总之,集成交货率和开销的数据转发性能泡沫说唱是最差的。与DRAFT-based和CCM-based数据转发策略,虽然我们提出TCEM-based数据转发策略的数据交付率是最低的,考虑到交货率和网络开销,我们提出的方法的性能是最好的。</p> <h4 id="conclusions">6。结论</h4> <p>在本文中,我们提出一个方法TCEM评估设备的数据转发能力。方法是基于时变瞬态集群,我们还提出一个方法TCDM检测瞬态集群。仿真结果表明,提出的数据转发策略基于我们TCEM优于其它现有的数据转发方式。</p> <h4 id="data-availability">数据可用性</h4> <p>Infocom6和剑桥数据集支持这一荟萃分析来自之前报道的研究和数据集,已被引用。</p> <h4 id="conflicts-of-interest">的利益冲突</h4> <p>作者宣称没有利益冲突。</p> <h4 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