arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1012.5499physics.soc-phcs.SI
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在空间囚徒困境博弈中,将社区整合到适应度评估中可以促进合作

Integrating neighborhoods in the evaluation of fitness promotes cooperation in the spatial prisoner's dilemma game

Zhen Wang, Wen-Bo Du, Xian-Bin Cao, Lian-Zhong Zhang

摘要:

人类社会的一个基本问题是合作的演变。许多先前的研究探讨了这个问题,通过设置空间背景,玩家通过与他们最近的邻居进行博弈来获得他们的收益。另一个不容忽视的事实是,环境在个体发展中起着重要作用。受这些现象的启发,我们重新考虑个人适应度的定义,通过引入选择参数$u$,将环境(由所有个体邻居的平均收益表示)与传统的个体收益相结合。将$u$调整为零将返回传统版本,而增大$u$将受到环境的影响。我们发现,考虑到环境,即在健身的评估整合邻里,促进合作。如果提高$u$的值,可以更好地抵抗缺损的侵袭。我们还提供了定量的解释和完整的相图呈现环境的影响,合作的演变。最后,证明了该机制对不同邻域大小、不同拓扑结构和不同博弈模型的通用性。我们的工作可能会揭示我们生活中合作的出现和持续。

英文摘要:

A fundamental question of human society is the evolution of cooperation. Many previous studies explored this question via setting spatial background, where players obtain their payoffs by playing game with their nearest neighbors. Another undoubted fact is that environment plays an important role in the individual development. Inspired by these phenomena, we reconsider the definition of individual fitness which integrates the environment, denoted by the average payoff of all individual neighbors, with the traditional individual payoffs by introducing a selection parameter $u$. Tuning $u$ equal to zero returns the traditional version, while increasing $u$ bears the influence of environment. We find that considering the environment, i.e. integrating neighborhoods in the evaluation of fitness, promotes cooperation. If we enhance the value of $u$, the invasion of defection could be resisted better. We also provide quantitative explanations and complete phase diagrams presenting the influence of environment on the evolution of cooperation. Finally, the universality of this mechanism is testified for different neighborhood sizes, different topology structures and different game models. Our work may shed a light on the emergence and persistence of cooperation in our life.

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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