Evolution of prisoner's dilemma strategies on scale-free networks |
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Authors: | Ya-Shan Chen |
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Institution: | Soft Condensed Matter Laboratory, Department of Physics, Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, PR China |
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Abstract: | The evolution of strategies in the iterated prisoner's dilemma on scale-free networks is investigated. It is found that the smaller the average degree is, the easier it is to promote cooperation by natural selection. Cooperation on scale-free networks built upon big clustering coefficients is enhanced and maintained at a high level. The introduction of punishment strategy for unsatisfied agents also increases cooperation and improves its persistence on scale-free networks. |
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Keywords: | 64 75 +g 61 20 Ja 68 05 &minus n |
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