| Effects of information asymmetry on cooperation in the prisoners＇ dilemma game |
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| 引用本文： | 王锡朋,姜罗罗,汪秉宏.Effects of information asymmetry on cooperation in the prisoners＇ dilemma game[J].中国物理 B,2012(7):74-79. |
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| 作者姓名： | 王锡朋 姜罗罗 汪秉宏 |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （Grant Nos. 11047012, 91024026, and 10975126） and the Specialized Research Fund for the Doctoral Program of Higher Education of China （Grant No. 20093402110032）. |
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| 摘 要： | Effects of inforination asymmetry on cooperation in the prisoners＇ dilemma game are investigated. The amplitude A is introduced to describe the degree of information asymmetry. It is found that there exists an optimal value of amplitude Aopt at which the fraction of cooperation reaches its maximal value. The reason lies in that cooperators on the two-dimensional grid form large clusters at Aopt. In addition, the theoretical analysis in terms of the mean- field theory is used to understand this kind of phenomenon. It is confirmed that the information asymmetry plays an important role in the dynamics of the dilemma games of spatial prisoners.
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| 关 键 词： | 信息不对称 合作 博弈 不对称性 平均场理论 信息化 最佳值 |
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