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To protect, or to recover? The effect of defense resource allocation on network robustness
Wei Chen1,2, Jingrui Wang2, Yongxiang Xia3
1Zhuoyue Honors College, Hangzhou Dianzi University, Hangzhou 310018, China.
Abstract:
This paper investigates the optimal allocation of resources between protection and recovery measures to maximize network robustness when both are available to the defender. Our study finds that as resources increase, a wise defender will quickly shift their focus from recovery to protection, then gradually back to recovery. We have elaborately detailed this nonlinear phenomenon. In addition, our results show that as the cost of defending (including protecting and recovering) critical nodes rises, or the load capacity of network redundancy improves, the defender will allocate a growing share of resources to recovery. The priority assigned to different node classes, i.e., the order of node protection or recovery, also shapes overall resource allocation.
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