Distributed flow optimization and cascading effects in weighted complex networks

Details Distributed flow optimization and cascading effects in weighted complex networks Distributed flow optimization and cascading effects in weighted complex networks

2011-10-17

arxiv.org/abs/1110.3832v1

Physics

Physics and Society

Scientific paper

We investigate the effect of a specific edge weighting scheme $\sim (k_i k_j)^{\beta}$ on distributed flow efficiency and robustness to cascading failures in scale-free networks. In particular, we analyze a simple, yet fundamental distributed flow model: current flow in random resistor networks. By the tuning of control parameter $\beta$ and by considering two general cases of relative node processing capabilities as well as the effect of bandwidth, we show the dependence of transport efficiency upon the correlations between the topology and weights. By studying the severity of cascades for different control parameter $\beta$, we find that network resilience to cascading overloads and network throughput is optimal for the same value of $\beta$ over the range of node capacities and available bandwidth.

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