摘要
针对复杂网络遭遇随机故障和蓄意攻击引发的相继故障问题,采用一种新的节点初始负荷的定义方法,并基于崩溃节点负荷的局域择优重新分配的原则,提出一个带有可调参数的相继故障模型。通过度量网络鲁棒性的一个新的指标,对比了两种袭击策略下复杂网络上的全局相继故障现象,并探讨不同袭击策略的有效性。数值模拟表明,在模型中可调参数的一定取值内,袭击网络中度最小的节点比袭击网络中度最大的节点更易于导致相继故障。此外,对数值模拟结果给出理论的分析解释。
In order to discuss cascading failures on complex networks subject to random failures or attacks, adopting a new method to define the initial load of a node, the study proposes a cascading model with a tunable parameter based on the local preferential redistribution rule of the load of a broken node. By a new measure to quantify the network robustness, we compare cascading phenomena under two attacks and discuss the effects of different attacks on complex networks. Numerical simulations indicate that the attack on the nodes with the lowest degree is more prone to lead to cascading failures than the attack on the one with the high- est degree in the certain range of the tunable parameter. In addition, the numerical simulations are also verified by the theoretical analysis.
出处
《管理科学》
CSSCI
北大核心
2009年第3期113-120,共8页
Journal of Management Science
基金
国家自然科学基金(70771016
70571011)~~
关键词
相继故障
复杂网络
可调参数
袭击策略
cascading failure
complex network
tunable parameter
attack strategy
