基于级联失效的复杂保障网络抗毁性仿真分析  

Invulnerability simulation analysis of complex logistics networks based on cascading failure

作　　者：李勇[1] 邓宏钟[1] 吴俊[1] 吕欣[1] 刘斌[1] 谭跃进[1] 

机构地区：[1]国防科学技术大学信息系统与管理学院,长沙410073

出　　处：《计算机应用研究》2008年第11期3451-3454,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(70501032;70771111)

摘　　要：通过引入流量强度指数α和流量分布指数β,建立了不同网络流量下的复杂负载网络级联失效抗毁性模型。基于该模型比较分析了无标度网络、随机网络和介于这两种网络之间的特定复杂保障网络在不同流量强度和流量分布下对单个节点的随机失效与故意攻击的抗毁性。结果表明,在考虑级联失效的条件下,复杂保障网络的抗毁性随着流量强度的增加急剧下降。此外,流量分布对复杂保障网络的抗毁性也具有显著影响,在流量强度一定的条件下改变网络的流量分布能有效提高网络的抗毁性。By the analysis of characteristics of complex logistics networks, a simulation model based on cascading failure for its invulnerability was proposed. In this model, the intensity and distribution of network traffic was controlled by an a-index and a r-index, respectively. The variety of invulnerability was simulated under random failures and intentional atlacks on different networks. Result shows that the invulnerability performance declines rapidly when the network traffic is increased. Furthermore, the distribution of network traffic also has a strong impact on the invulnerability performance.

关 键 词：保障网络 级联失效 抗毁性 流量强度 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]