面向级联失效的复杂层次网络可靠性

In order to research the reliability of the modern military complex network against the cascading failure,the complex hierarchical network model was proposed based on the small-world effect,scale-free features and hierarchical modularity.Under the condition of incomplete information,the fault nodes were leaf nodes at the bottom layer of the network and the reliability measurement index of complex network was proposed based on the network connectivity entropy,and a cascading failure model was proposed based on a local load-redistribution model with the network nodes fault model according to the range and heterogeneity.Numerical simulation and theoretical analytic results show that there is a tolerance parameter of minimum critical value.When the tolerance parameter in the network is greater than the critical value,an arbitrary bottom leaf node failure will not lead to the network cascading failure,and the network module internal connections can be increased to improve network reliability.