Evolutionary Prisoners＇ Dilemma Game on Scale-Free Networks with Degree-Degree Correlation

• Published in: Chinese physics letters Vol. 27; no. 10; pp. 3 - 6
• Main Author: 程洪艳 代琼琳 李海红 杨俊忠
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.10.2010
• Subjects: Pearson相关系数; 囚徒困境; 异质性; 拓扑性质; 无尺度网络; 无标度网络
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/27/10/100201

Degree-degree correlation and heterogeneity in degree are important topological properties characterizing scale-free networks. We consider an evolutionary prisoners＇ dilemma game on scale-free networks and investigate how degree-degree correlation influences cooperation. It is found that the cooperator frequency displays resonance-like behavior with the variation of Pearson correlation coefficient. A measure on local heterogeneity in a network is proposed and it is realized that cooperation is proportional to the local heterogeneity.