Prisoner's Dilemma on community networks
Prisoner's Dilemma on community networks
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DOI：
10.1016/j.physa.2006.12.024
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发表时间：
2007-05-15
影响因子：
3.3
通讯作者：
Wang, Long
中科院分区：
文献类型：
--
作者：
Chen, Xiaojie;Fu, Feng;Wang, Long
本文引入了一个具有无标度特性的社区网络模型，并在此模型上研究了进化的囚徒困境博弈。仿真结果表明，随着平均度(k) / bar的增加，合作体的频率逐渐降低。在保持总联系（包括社区内部和社区之间的联系）不变的情况下，减少社区间的联系可以促进合作。研究还表明，网络的异质性并不总是促进合作，在一定程度分布下，所有顶点之间的联系模式对网络模型中合作的优势起着至关重要的作用。(c) 2007 Elsevier B.V.版权所有
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) over bar 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. (c) 2007 Elsevier B.V. All rights reserved.