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Attack robustness of cascading load model in interdependent networks

Jianwei Wang (), Yuedan Wu and Yun Li
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Jianwei Wang: School of Business Administration, Northeastern University, Shenyang 110819, P. R. China
Yuedan Wu: School of Business Administration, Northeastern University, Shenyang 110819, P. R. China
Yun Li: School of Business Administration, Northeastern University, Shenyang 110819, P. R. China

International Journal of Modern Physics C (IJMPC), 2015, vol. 26, issue 03, 1-14

Abstract: Considering the weight of a node and the coupled strength of two interdependent nodes in the different networks, we propose a method to assign the initial load of a node and construct a new cascading load model in the interdependent networks. Assuming that a node in one network will fail if its degree is 0 or its dependent node in the other network is removed from the network or the load on it exceeds its capacity, we study the influences of the assortative link (AL) and the disassortative link (DL) patterns between two networks on the robustness of the interdependent networks against cascading failures. For better evaluating the network robustness, from the local perspective of a node we present a new measure to qualify the network resiliency after targeted attacks. We show that the AL patterns between two networks can improve the robust level of the entire interdependent networks. Moreover, we obtain how to efficiently allocate the initial load and select some nodes to be protected so as to maximize the network robustness against cascading failures. In addition, we find that some nodes with the lower load are more likely to trigger the cascading propagation when the distribution of the load is more even, and also give the reasonable explanation. Our findings can help to design the robust interdependent networks and give the reasonable suggestion to optimize the allocation of the protection resources.

Keywords: Cascading failure; coupled strength; interdependent network; attack; 89.75.Hc; 89.75.-k; 89.75.Fb (search for similar items in EconPapers)
Date: 2015
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