研究文章
Random-Parameter多元负二项回归建模的影响因素在事故频率崩溃类型
|
| 变量1 |
不。2 |
在尾端的估计(t统计) |
Bumping-guardrail估计(t统计) |
其他的估计(t统计) |
Noncasualty估计(t统计) |
伤亡估计(t统计) |
|
| 常数 |
5 |
0.043 (0.27) |
0.502 (3.07) |
−0.528 (−2.11) |
−0.033 (−0.21) |
−0.431 (−1.13) |
|
| 交通特征 |
| 交换 |
3 |
- - - - - -3 |
- - - - - - |
−0.422 (−2.91) |
−0.165 (−1.95) |
−0.601 (−2.55) |
| 黑色的斑点 |
5 |
1.057 (11.06) |
0.859 (9.77) |
1.276 (7.17) |
1.196 (9.54) |
1.322 (4.88) |
| AADT |
|
0.00003 (8.66) |
0.00001 (3.00) |
0.00001 (2.52) |
0.00004 (11.55) |
- - - - - - |
|
| 速度特性 |
|
|
5 |
−0.013 (−3.63) |
−0.008 (−2.38) |
−0.014 (−2.63) |
−0.017 (−4.58) |
−0.016 (−1.85) |
|
|
5 |
0.011 (3.31) |
0.008 (2.45) |
0.010 (2.09) |
0.011 (3.25) |
0.023 (0.014) |
|
|
2 |
0.021 (3.14) |
- - - - - - |
- - - - - - |
0.027 (3.82) |
- - - - - - |
|
|
4 |
−0.019 (−4.09) |
−0.009 (−2.11) |
−0.018 (−2.67) |
−0.022 (−4.40) |
- - - - - - |
|
| 几何特征 |
|
|
1 |
- - - - - - |
- - - - - - |
- - - - - - |
- - - - - - |
0.000251 (2.13) |
|
|
2 |
0.00000036 (3.63) |
- - - - - - |
- - - - - - |
0.000000379 (3.60) |
- - - - - - |
|
|
5 |
0.0005888 (10.28) |
0.0004658 (8.04) |
0.0007505 (8.02) |
0.0007521 (11.57) |
0.000750 (6.23) |
|
|
1 |
- - - - - - |
−0.0001341 (−2.49) |
- - - - - - |
- - - - - - |
- - - - - - |
|
|
4 |
−0.000356 (−2.5) |
- - - - - - |
−0.0004069 (−1.88) |
−0.0004248 (−2.83) |
−0.000586 (−1.76) |
|
| 视觉特征 |
|
|
5 |
−0.054 (−2.78) |
−0.006 (−2.86) |
−0.011 (−3.20) |
−0.007 (−3.44) |
−0.013 (−2.51) |
|
|
3 |
−0.086 (−2.13) |
−0.105 (−2.57) |
- - - - - - |
−0.087 (−2.06) |
- - - - - - |
|
|
注意: 1变量定义和单位中可以看到表 2。这里没有显示属性变量无关紧要。 2参数估计的数量。 3在95%显著性水平无关紧要。参数:总数55;对数似:−14352.787;AIC: 29007.581;BIC: 29602.802;
:21274.146。
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