关键词: 相继故障, 相互依存网络, 匹配系数, 故障渗流, 随机网络, 无标度网络

Abstract: To reduce cascading failures of interdependent networks, it introduces a topological coupling strategy that a network connects another network with same position nodes, by drawing?on?the?experience?of inter-similarity coupling, after defining normalized degree, inter-assortativity coefficient and inter-clustering coefficient. Adopting breadth first search algorithm and taking hub node as initial search node, the strategy can improve the matching degree of inter-similarity and extend the application scene. Interdependent ER networks and SR networks are taken as examples and simulated, the?result?of?the?experiment implies that the coupling algorithm leads to change from a first to second order percolation transition, and can improve robustness of interdependent networks compared to random coupling algorithm under targeted attacks, random attacks and targeted defenses.

Key words: cascade of failures, interdependent networks, assortativity coefficient, percolation of failures, Erdos-Renyir networks, scale-free networks