关联网络中的级联失效模型与分析  

Analysis of Cascading Failure Model for Interdependent Networks

作　　者：陈志龙[1] 郭平[2] 谢嵩源[1] 马龙邦[1] 李建霖[1] 

机构地区：[1]后勤工程学院后勤信息工程系,重庆401311 [2]后勤工程学院训练部,重庆401311

出　　处：《后勤工程学院学报》2011年第6期87-91,共5页Journal of Logistical Engineering University

摘　　要：网络之间的关联依赖关系能使某一网络内的级联失效扩散至其他网络，其本质是位于不同网络的关联节点之间基于功能依赖的相关失效。以两个关联的网络为对象，建立关联网络模型，提出了一种关联网络的级联失效模型。模型将关联网络中的级联失效分解为网络内级联失效和网络间级联失效，并采用了基于度的级联规模评价方法。利用模型研究了两个关联无标度网络中的级联失效行为，研究发现关联比例和关联节点的平均度数越大，越容易引起网络间的级联失效。该模型还可推广至多个网络关联的情形。Due to interdependencies among networks,cascading failure can spread from one network to others,which is a kind of relative failure based on function dependency by nature. A cascading failure model for interdependent networks is proposed after modeling two interdependent networks. Cascading failure in interdependent networks can be divided into internal cascading and casca- ding among networks. Degree-based cascading scale evaluation method is adopted to study the cascading failure phenomenon of two interdependent scale-free networks. It can be found that the bigger the average degree of the correlation rate and correlation nodes is, the more easily the cascading failure among networks occurs. The model can be extended to serve the turn for multiple cascade networks.

关 键 词：关联网络 级联失效 无标度网络 级联规模 

分 类 号：TP302[自动化与计算机技术—计算机系统结构] N945[自动化与计算机技术—计算机科学与技术]