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Capacity allocation strategy against cascading failure of complex network
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Cascading failures in infrastructure networks have serious impacts on network function.The limited capacity of net-work nodes provides a necessary condition for cascade failure.However,the network capacity cannot be infinite in the real net-work system.Therefore,how to reasonably allocate the limited capacity resources is of great significance.In this article,we put forward a capacity allocation strategy based on community structure against cascading failure.Experimental results indi-cate that the proposed method can reduce the scale of cascade failures with higher capacity utilization compared with Motter-Lai(ML)model.The advantage of our method is more obvious in scale-free network.Furthermore,the experiment shows that the cascade effect is more obvious when the vertex load is ran-domly varying.It is known to all that the growth of network capacity can make the network more resistant to destruction,but in this paper it is found that the contribution rate of unit capacity rises first and then decreases with the growth of net-work capacity cost.
capacitycomplex networkfailure of cascade
LIU Jun、LIANG Xiaolong、LEI Pengfei
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Air Traffic Control and Navigation College,Air Force Engineering University,Xi'an 710051,China
Shaanxi Province Lab.of Meta-Synthesis for Electronic&Information System,Xi'an 710051,China
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