相互依存网络耦合映像格子的相继故障

Cascading failures ofinterdependent networks based on the coupled map lattice

本文基于耦合映像格子的相继故障模型,利用仿真和统计分析的方法,研究了BA同构依存网络(BA-BA)和异构依存网络(BA-ER)在随机攻击和蓄意攻击两种攻击方式下的相继故障行为.本文选择了偏好依存和随机依存两种方式分别构建了依存网络.研究结果表明∶(1)同构的偏好依存网络和随机依存网络表现出了类似的相继故障特性,即这两种依存方式下的网络都对随机攻击鲁棒,对蓄意攻击脆弱.同时,随机依存方式能增强BA同构依存网络的鲁棒性.(2)异构的偏好依存网络和随机依存网络表现出了和BA同构依存网络相反的特性,即异构的依存网络对随机攻击脆弱,对蓄意攻击鲁棒,且随机依存方式也增强了异构依存网络的鲁棒性.本文的研究结果对进一步理解相互依存网络的拓扑结构及依存方式对依存网络鲁棒性的影响有重要的参考价值.

In this paper,we research the cascading failures behavior of homogeneous interdependent networks(BA-BA)and heterogeneous interdependent networks(BA-ER)based on the couple map lattices.In simulation,we used two attack strategies:random attack and deliberate attack.We constructed interdependent networks by random dependence and preference dependence.Simulation results show:(1)In homogeneous interdependent networks,the random dependence network and the preference dependence network show similar characteristics on cascading failures behavior,these two interdependent networks are robust against random attacks butare vulnerable todeliberate attacks.Moreover,random dependence could increase the robustness of homogeneous interdependent networks.(2)The heterogeneous interdependent networks are vulnerable against random attacks butare robust to deliberate attacks,and the robustness is increased in the random dependence.The results of this paper are important for understanding the effect of structure on cascading failure behavior.