Random mobility and the evolution of cooperation in spatial N-player iterated Prisoner's Dilemma games
Random mobility and the evolution of cooperation in spatial N-player iterated Prisoner's Dilemma games
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DOI：
10.1016/j.physa.2012.03.010
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发表时间：
2012-08-01
影响因子：
3.3
通讯作者：
Kirley, Michael
中科院分区：
文献类型：
--
作者：
Chiong, Raymond;Kirley, Michael
我们研究了空间版的N人迭代囚徒困境博弈中随机迁移率对合作演化的影响，其中个体位于具有周期边界条件的二维正则格子上。个体离开当前位置的概率是基于它占据给定位置的时间量和占据目的地位置的个体的相对适应值。我们的结果表明，在N人博弈中，随机移动可以促进合作行为。在某些情况下，与静态模型相比，随机移动提高了系统范围内的合作水平。然而，结果严格取决于成本效益比和行动范围。对人口动力学的分析表明，在人口流动到位的情况下，模型的收敛速度(即人口达到平衡状态的时间)更快。我们的发现有助于进一步理解在空间结构的人群中流动性和进化的游戏策略之间的关系，特别是当有效的集体行动很重要的时候。(C)2012爱思唯尔B.V.保留所有权利。
We study the effects of random mobility on the evolution of cooperation in a spatial version of the N-player Iterated Prisoner's Dilemma game, where individuals are located on a two-dimensional regular lattice with periodic boundary conditions. The probability that an individual moves from its current location is based on the amount of time it has occupied a given position and the relative fitness values of the individual occupying the destination position. Our results show that random movement can promote cooperative behaviour in N-player games. In some circumstances, random mobility enhances system-wide cooperation levels when compared to the static model. However, the outcome is strictly dependent on the cost-to-benefit ratio and the range of movement. An analysis of the population dynamics suggests that the convergence rate of the model (i.e., the time for the population to reach an equilibrium state) is faster with mobility in place. Our findings help to further understand the relationship between mobility and evolving game-playing strategies in spatially structured populations, especially when efficient collective actions matter. (C) 2012 Elsevier B.V. All rights reserved.