Computer Science > Social and Information Networks
[Submitted on 25 Mar 2022]
Title:How fragile is your network? More than you think
View PDFAbstract:Graphs are pervasive in our everyday lives, with relevance to biology, the internet, and infrastructure, as well as numerous other applications. It is thus necessary to have an understanding as to how quickly a graph disintegrates, whether by random failure or by targeted attack. While much of the interest in this subject has been focused on targeted removal of nodes, there has been some recent interest in targeted edge removal. Here, we focus on how robust a graph is against edge removal. We define a measure of network fragility that relates the fraction of edges removed to the largest connected component. We construct a class of graphs that is robust to edge removal. Furthermore, it is demonstrated that graphs generally disintegrate faster than would be anticipated by greedy targeted attack. Finally it is shown that our fragility measure as demonstrated real and natural networks.
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