Optimal degree-based weighting scheme and the role of coupling strength against load failures in interdependent networks

摘要

The optimal weighting scheme for robustness of symmetrically coupled interdependent networks against load failures is investigated. The flow dynamics is dominated by global redistribution based on weighted between centrality. The degree-based weighting scheme was extended to interdependent networks. Through contingency analysis of one-node removal, we demonstrated that there still exists an optimal weighting parameter but it might shift as compared to the case in isolated networks because of the break of symmetry. And it will be easier for the symmetrically coupled interdependent network to achieve robustness and better cost configuration against the one-node-removal-induced cascade of load failures when relative interconnection intensity was weaker. Our findings might have great generality for characterizing load-failure-induced cascading dynamics in real-world weighted interdependent networks.