Cascading failure tolerance of modular small-world networks

Babaei, M, Ghassemieh, H and Jalili, M 2011, 'Cascading failure tolerance of modular small-world networks', IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 58, no. 8, pp. 527-531.


Document type: Journal Article
Collection: Journal Articles

Title Cascading failure tolerance of modular small-world networks
Author(s) Babaei, M
Ghassemieh, H
Jalili, M
Year 2011
Journal name IEEE Transactions on Circuits and Systems II: Express Briefs
Volume number 58
Issue number 8
Start page 527
End page 531
Total pages 5
Publisher IEEE
Abstract Many real-world networks have a modular structure, and their component may undergo random errors and/or intentional attacks. More devastating situations may happen if the network components have a limited load capacity; the errors and attacks may lead to a cascading component removal process, and consequently, the network may lose its desired performance. In this brief, we investigate the tolerance of cascading errors and attacks in modular small-world networks. This brief studies the size of the largest connected component of the networks when cascading errors or attacks occur. The robustness of the network is tested as a function of both the intermodular connection and intramodular rewiring probabilities, i.e., the rewiring probability of original Watts-Strogatz networks that the individual modules are based on. We find that intermodular connections play an important role in determining the robustness of the networks against cascading failures. We also study cascaded failure in a number of real networks with different modularity levels and find that the more the modularity level of a network, the less its robustness against cascaded failures.
Subject Dynamical Systems in Applications
Circuits and Systems
Complex Physical Systems
Keyword(s) Betweenness centrality measure
cascading failure
modular networks
robustness
small-world networks
Copyright notice © 2011 IEEE
ISSN 1549-7747
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