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Publication Detail
Emergence of cooperation in non-scale-free networks
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Publication Type:Journal article
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Publication Sub Type:Article
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Authors:Zhang Y, Aziz-Alaoui MA, Bertelle C, Zhou S, Wang W
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Publication date:2014
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Pagination:1, 6
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Journal:Journal of Physics A: Mathematical and Theoretical
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Volume:47
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Issue:225003
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Status:Published
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Print ISSN:1751-8113
Abstract
Evolutionary game theory is one of the key paradigms behind many scientific disciplines from science to engineering. Previous studies proposed a strategy updating mechanism, which successfully demonstrated that the scale-free network can provide a framework for the emergence of cooperation. Instead, individuals in random graphs and small-world networks do not favor cooperation under this updating rule. However, a recent empirical result shows the heterogeneous networks do not promote cooperation when humans play a prisoner's dilemma. In this paper, we propose a strategy updating rule with payoff memory. We observe that the random graphs and small-world networks can provide even better frameworks for cooperation than the scale-free networks in this scenario. Our observations suggest that the degree heterogeneity may be neither a sufficient condition nor a necessary condition for the widespread cooperation in complex networks. Also, the topological structures are not sufficed to determine the level of cooperation in complex networks.
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