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.
出处
《计算机应用研究》
CSCD
北大核心
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)
关键词
保障网络
级联失效
抗毁性
流量强度
logistics networks
cascading failure
invulnerability
network traffic
