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arXiv 1508.03325physics.soc-phcs.GTq-bio.PE
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空间公共物品博弈中不同惩罚策略的竞争与合作

Competition and cooperation among different punishing strategies in the spatial public goods game

Xiaojie Chen, Attila Szolnoki, Matjaz Perc

摘要:

受人们惩罚不法行为者的不同倾向这一事实的启发,我们研究了一个有背叛者和不同类型惩罚合作者的空间公共产品博弈。在博弈过程中,合作者会以特定类别的概率惩罚背叛者,并随后分担制裁的相关成本。我们表明,在存在不同的惩罚合作者的最高水平的公共合作总是可以通过选择机制。有趣的是,这种选择并不一定有利于惩罚者的进化,因为惩罚者能够靠自己战胜背叛者,也不一定总是阻碍惩罚者的进化,因为惩罚者不能靠自己战胜背叛者。相反,惩罚策略的进化成功敏感地取决于它们的入侵速度,这反过来又揭示了它们之间既竞争又合作的有趣例子。此外,我们表明,在有利的条件下,当惩罚是不是严格必要的公共合作的维护,不那么积极,温和的形式的制裁是选择过程中的唯一胜利者。我们的工作表明,自然策略选择不仅可以促进,但有时也阻碍亲社会策略之间的竞争。

英文摘要:

Inspired by the fact that people have diverse propensities to punish wrongdoers, we study a spatial public goods game with defectors and different types of punishing cooperators. During the game, cooperators punish defectors with class-specific probabilities and subsequently share the associated costs of sanctioning. We show that in the presence of different punishing cooperators the highest level of public cooperation is always attainable through a selection mechanism. Interestingly, the selection not necessarily favors the evolution of punishers who would be able to prevail on their own against the defectors, nor does it always hinder the evolution of punishers who would be unable to prevail on their own. Instead, the evolutionary success of punishing strategies depends sensitively on their invasion velocities, which in turn reveals fascinating examples of both competition and cooperation among them. Furthermore, we show that under favorable conditions, when punishment is not strictly necessary for the maintenance of public cooperation, the less aggressive, mild form of sanctioning is the sole victor of selection process. Our work reveals that natural strategy selection can not only promote, but sometimes also hinder competition among prosocial strategies.

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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