Evolution of prisoner's dilemma strategies on scale-free networks

✍ Scribed by Ya-Shan Chen; Hai Lin; Chen-Xu Wu

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 365 KB
• Volume: 385
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/j.physa.2007.06.008

✦ Synopsis

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.