China Safety Science Journal ›› 2023, Vol. 33 ›› Issue (9): 204-213.doi: 10.16265/j.cnki.issn1003-3033.2023.09.1469
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LI Xinhong1(), FU Yaqian1, LIU Yazhou1, HAN Ziyue2, ZHANG Renren1
Received:
2023-03-14
Revised:
2023-06-18
Online:
2023-09-28
Published:
2024-03-28
LI Xinhong, FU Yaqian, LIU Yazhou, HAN Ziyue, ZHANG Renren. Copula-BN based risk assessment methodology of marine ship collisions[J]. China Safety Science Journal, 2023, 33(9): 204-213.
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Tab.4
Results of probability density change of T after updating each factor
指标 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | S1 | S2 | S3 | E1 | E2 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
各因素更 新区域 | [0.05,0.1] | [0.05,0.1] | [0,0.1] | [2,7] | [0.1,0.2] | [0,0.05] | [0.1,0.2] | [0.05,0.1] | [0.05,0.1] | [0,0.1] | [1,3] | [7,8] |
T的均值 | 0.917 | 0.928 | 0.923 | 0.916 | 0.884 | 0.927 | 0.924 | 0.929 | 0.929 | 0.929 | 0.928 | 0.929 |
T的标 准差 | 0.027 | 0.027 | 0.024 | 0.025 | 0.022 | 0.027 | 0.027 | 0.027 | 0.027 | 0.027 | 0.027 | 0.027 |
Tab.5
Means and variances of factors before and after T-factor update
指标 | P1 | P2 | P3 | P4 | P5 | P6 | P7 | S1 | S2 | S3 | E1 | E2 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
原始均值 | 0.671 | 0.137 | 0.313 | 8.94 | 0.512 | 0.050 | 0.415 | 0.277 | 0.121 | 0.091 | 4.33 | 4.89 |
更新后均值 | 0.751 | 0.173 | 0.687 | 12.4 | 0.629 | 0.056 | 0.492 | 0.288 | 0.121 | 0.092 | 4.49 | 4.82 |
改变量/% | 11.9 | 26.3 | 119.5 | 38.7 | 22.9 | 12.0 | 18.6 | 4.0 | 0 | 1.1 | 3.7 | -1.4 |
原始标准差 | 0.254 | 0.158 | 0.4 | 3.38 | 0.109 | 0.020 | 0.22 | 0.171 | 0.073 | 0.062 | 1.77 | 1.22 |
更新后标准差 | 0.255 | 0.157 | 0.556 | 3.74 | 0.077 | 0.020 | 0.232 | 0.17 | 0.074 | 0.063 | 1.82 | 1.22 |
改变量/% | 0.4 | -0.6 | 39.0 | 10.7 | -29.4 | 0 | 5.5 | -0.6 | 1.4 | 1.6 | 2.8 | 0 |
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