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- Title
Cascading dynamics in congested complex networks.
- Authors
Wang, J.; Liu, Y.-H.; Jiao, Y.; Hu, H.-Y.
- Abstract
Cascading failures often occur in congested complex networks. Cascading failures can be expressed as a three phase process: generation, diffusion and dissipation of congestion. Different from betweenness centrality, we propose a congestion function to represent the extent of congestion on a given node. By introducing the concept of “delay time”, we construct an intergradation between permanent removal and nonremoval. We also build a new evaluation function of network efficiency, based on congestion, which measures the damage caused by cascading failures. Finally, based on Statnet and Webgraph topologies we investigate the effects of network structure and size, delay time, processing ability and traffic generation speed on congestion propagation. Also we uncover cascading process composed of three phases and some factors affecting cascade propagation.
- Subjects
COMPLEXITY (Philosophy); SCALING laws (Statistical physics); COMPUTER simulation; EQUATIONS; TRAFFIC congestion
- Publication
European Physical Journal B: Condensed Matter, 2009, Vol 67, Issue 1, p95
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2009-00004-0