摘要
针对级联失效在现实复杂网络中可能造成的严重破坏性现状,文章以小世界网络和无标度网络为基础,在考虑节点负载和容量的前提下,提出了一种衡量复杂网络级联失效影响的标准化指标,研究了基于节点度的网络攻击对复杂网络级联失效的影响。在节点度攻击中,提出了4种基于节点度的攻击模型:高度值攻击下的WS小世界网络、低度值攻击下的WS小世界网络、高度值攻击下的BA无标度网络和低度值攻击下的BA无标度网络。基于上述攻击模型,利用MATLAB进行了仿真分析,在负载参数取不同值时,观察容量参数与标准化指标之间的关系。结果表明,当节点负载和容量参数满足一定条件时,攻击网络中度值较低的节点反而会造成更大的破坏。这一结果打破了传统思想,为实际复杂网络中重要节点的保护提供了参考意义。
Based on small world network and scale-free network,considering the initial load and node capacity,this paper proposes a standardized index to measure the effect of cascading failure of complex network,and studies the effect of network attack based on node degree.In node degree attack,four attack models based on node degree are proposed:Higher-Degree-Based Attack in WS small world network(HDBA in WS),Lower-Degree-Based Attack in WS small world network(LDBA in WS),Higher-Degree-Based Attack in BA scale-free network(HDBA in BA)and Lower-Degree-Based Attack in BA scale-free network(LDBA in BA).Based on the above attack model,Matlab is used to simulate and analyze the relationship between capacity parameter and standardization index when the load parameters are different.The results show that when the load and capacity parameters of the nodes meet certain conditions,attacking the nodes with low node degree values will cause more damage.This result breaks the traditional idea and provides a reference for the protection of important nodes in the actual complex network.
作者
高智慧
曹汗青
张狂
刘钰杰
耿鹏
Gao Zhihui;Cao Hanqing;Zhang Kuang;Liu Yujie;Geng Peng(School of Information and Communication Engineering,Nanjing Institute of Technology,Nanjing 211167,China)
出处
《信息化研究》
2020年第4期47-51,共5页
INFORMATIZATION RESEARCH
基金
江苏省大学生创新训练计划项目(No.202011276102H)
关键词
复杂网络
级联失效
节点度
网络攻击
complex networks
cascading failure
node degree
network attack
作者简介
高智慧(2001—),女,本科在读,主要研究方向为信息工程等。
