Node importance analysis considering cascading failure in cyberspace

This paper presented a cascading failure model based on load redistribution. Firstly, “load rate” is defined for each node. The parameter has two characteristics: one is that the status of the considered node can be clearly pointed out by its value, and the other is that the evolution of topology is replaced by the evolution of value of “load rate” during the process of cascading failure. Then, an evaluation algorithm of node importance considering cascading failure is presented in cyberspace. The numerical simulation demonstrates the effectiveness and feasibility of the evaluation algorithm which can help us to find some potential critical nodes that are not so intuitively.