Prisoner's Dilemma on community networks

✍ Scribed by Xiaojie Chen; Feng Fu; Long Wang

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 547 KB
• Volume: 378
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/j.physa.2006.12.024

✦ Synopsis

We introduce a community network model which exhibits scale-free property and study the evolutionary Prisoner's Dilemma game (PDG) on this network model. It is found that the frequency of cooperators decreases with the increment of the average degree k from the simulation results. And reducing inter-community links can promote cooperation when we keep the total links (including inner-community and inter-community links) unchanged. It is also shown that the heterogeneity of networks does not always enhance cooperation and the pattern of links among all the vertices under a given degree-distribution plays a crucial role in the dominance of cooperation in the network model.