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Robustness in scale-free networks: Comparing directed and undirected networks

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)717-726
Number of pages10
JournalInternational Journal of Modern Physics C
Issue number5
Publication statusPublished - May 2008
Externally publishedYes
Publication typeA1 Journal article-refereed


In this paper, scale-free networks and their functional robustness with respect to structural perturbations of the network are studied. Two types of perturbations are distinguished: random perturbations and attacks. The robustness of directed and undirected scale-free networks is studied numerically for two different measures and the obtained results are compared. For random perturbations, the results indicate that the strength of the perturbation plays a crucial role. In general, directed scale-free networks are more robust than undirected scale-free networks.