Differences in Network Reliability Improvement by Several Importance Indices
Differences in Network Reliability Improvement by Several Importance Indices
复制标题
几个重要指标对网络可靠性提升的差异
DOI：
10.1016/j.trpro.2015.09.065
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Takahiro Nagae and Hiroshi Wakabayashi
中科院分区：
文献类型：
--
作者：
佐藤貴大;円山琢也;長江貴弘・若林拓史;長江貴弘・若林拓史;藤田 衛・若林拓史・長江貴弘;Takahiro Nagae and Hiroshi Wakabayashi
为了在灾害环境下构建高可靠的公路网，对各种重要指标进行了比较研究，提出了提高公路网可靠性的近似方法。对三个指标进行了比较。其中两个是传统的可靠性重要度(RI)和临界重要度(CI)指标，另一个是Wakabayashi(2004)最近提出的改进的关键度重要度(CIW)指标。首先，讨论了可靠性重要性的意义。其次，对它们的定义、优缺点进行了阐述。第三，介绍了提高链路可靠性的几种代价函数。第四，比较了小型网络中的RI型和CIW型，并讨论了它们在提高链路可靠性方面的差异。第五，提出了一种利用部分最小路集的近似方法。最后，通过计算实验，验证了CIW指标的优越性和所提出的近似方法的有效性。
For constructing a highly reliable highway network under a disaster environment, this paper presents a comparative study of the importance indices and proposes an approximate method for improving highway network reliability. Three indices are compared. Two of them are conventional indices of reliability importance (RI) and criticality importance (CI), and the other is the improved criticality importance (CIW) index recently proposed by Wakabayashi (2004). First, the significance of reliability importance is discussed. Second, their definitions, merits, and demerits are explained. Third, several cost functions for improving link reliability are introduced. Fourth,RIandCIWare compared for a small-sized network and differences in improved link reliability are discussed. Fifth, an approximate method is proposed using partial minimal path sets. Lastly, after calculation experiments, the advantages of theCIWindex and the effectiveness of the proposed approximate method are demonstrated.