Structural dependence of robustness and load tolerance in scale-free networks

Details Structural dependence of robustness and load tolerance in scale-free networks Structural dependence of robustness and load tolerance in scale-free networks

2007-10-12

arxiv.org/abs/0710.2513v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

The structure of complex networks in previous research has been widely described as scale-free networks generated by the preferential attachment model. However, the preferential attachment model does not take into account the detailed topological property observed in real networks. Here we propose the models of scale-free networks which can reproduce the topological assortativity of real networks. With an identical degree distribution and network size, we study the structural robustness and fragility as well as the dynamic change of load intensity when nodes are successively removed under random and various intentional attack strategies. We find that disassortative networks are structurally robust against random attacks and highly load-tolerant, while assortative networks are most resistant to intentional attacks yet significantly fragile against random attacks.

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