arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1709.04784physics.soc-ph
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规则更新对共同进化囚徒困境的影响

Effects of updating rules on the coevolving prisoner's dilemma

Hirofumi Takesue

摘要:

我们研究了三种策略更新规则在共同进化的囚徒困境博弈中的作用,其中代理(节点)可以切换策略和社会伙伴。在两种基于节点的策略更新规则下,策略更新发生在随机选择的焦点节点和其随机选择的邻居之间。焦点代理成为策略接受者,并可能根据支付差异模仿邻居的策略,即类似投票者模型的动态(VMLD),或者成为策略捐赠者,因此可能被邻居模仿,即类似入侵过程的动态(IPLD)。对于基于边的更新规则,选择一条边,并随机决定两个连接节点(施主或接收者)的角色,即基于边的动态(EBD)。一个计算机模拟表明,合作伙伴切换支持VMLD下的合作,这已被利用在许多研究空间进化游戏的演变,而合作者往往消失下IPLD。EBD结果介于这两个过程之间。这种差异在度较大的节点中尤为突出。此外,合作伙伴转换诱导的合作者的分数和VMLD和EBD下的选择强度之间的非单调关系,弱或强的选择支持合作。相反,只有强选择支持IPLD下的合作者。在静态异构网络上玩游戏时,观察到类似的差异,在合作的增强。我们的研究结果表明,模仿的方向是非常重要的理解合作的进化过程。

英文摘要:

We studied the effect of three strategy updating rules in coevolving prisoner's dilemma games where agents (nodes) can switch both the strategy and social partners. Under two node-based strategy updating rules, strategy updating occurs between a randomly chosen focal node and its randomly selected neighbour. The focal agent becomes the strategy recipient and may imitate the strategy of the neighbour according to the payoff difference, i.e. voter-model-like dynamics (VMLD), or becomes a strategy donor and thus may be imitated by the neighbour, i.e. invasion-process-like dynamics (IPLD). For edge-based updating rules, one edge is selected, and the roles of the two connected nodes (donor or recipient) are randomly decided, i.e. edge-based dynamics (EBD). A computer simulation shows that partner switching supports the evolution of cooperation under VMLD, which has been utilised in many studies on spatial evolutionary games, whereas cooperators often vanish under IPLD. The EBD results lie between these two processes. This difference is prominent among nodes with large degrees. In addition, partner switching induces a non-monotonic relationship between the fraction of cooperators and intensity of selection under VMLD and EBD, and a weak or strong selection supports cooperation. In contrast, only a strong selection supports cooperators under IPLD. Similar differences in the enhancement of cooperation are observed when games are played on static heterogeneous networks. Our results imply that the direction of imitation is quite important for understanding the evolutionary process of cooperation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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