中间性中心性
稳健性(进化)
计算机科学
中国
可靠性(半导体)
节点(物理)
背景(考古学)
拓扑(电路)
复杂网络
计算机网络
计算机安全
地理
工程类
数学
中心性
统计
结构工程
电气工程
物理
基因
万维网
功率(物理)
考古
化学
量子力学
生物化学
作者
Jianhua Zhang,Xiaoming Xu,Hong Liu,Shu‐Liang Wang,Fei Qi
标识
DOI:10.1016/j.physa.2011.06.022
摘要
Recently, cities have become larger and larger, and more and more people are living in large cities. This phenomenon has caused serious traffic congestion which is very detrimental to the development of large cities. In this context, the subway has become the most effective solution for relieving traffic congestion and subways have been constructed in many cities, so the reliability and robustness of subways should be guaranteed. In this paper, Shanghai subway network, in China, will be analyzed and investigated; the topological characteristics and functional properties can be studied in order to assess the reliability and robustness. The topological characteristics can be measured using several parameters; meanwhile the fraction of removed nodes of Shanghai subway network is discussed and compared against that for a random network, and the critical threshold of this fraction is obtained. Two novel parameters called the functionality loss and connectivity of subway lines are proposed for measuring the transport functionality and the connectivity of subway lines. Subway lines 4 and 7 are selected as examples for evaluating the connectivity of lines subjected to different attack protocols. This study indicates that the subway network is robust against random attacks but fragile for malicious attacks, and the highest betweenness node-based attacks can cause the most serious damage to subway networks among the different attack protocols.
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