Cooperation evolves by the payoff-difference-based probabilistic reward
Cooperation evolves by the payoff-difference-based probabilistic reward
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DOI：
10.1140/epjb/s10051-021-00239-z
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发表时间：
2021-11
期刊：
影响因子：
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通讯作者：
Tetsushi Ohdaira
中科院分区：
文献类型：
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作者：
Tetsushi Ohdaira
摘要在以往的研究中，作者提出了基于收益差的概率同伴惩罚，即惩罚背叛者的概率随着参与者和背叛者之间收益差的增加而增加，并表明所提出的同伴惩罚有效地增加了合作者的数量和所有参与者的平均收益。另一方面，奖励和惩罚被认为是一种促进合作的机制，许多研究讨论了奖励在公共物品博弈中的作用，这是一种多人版本的囚徒困境博弈。本文在对已有研究进行讨论的基础上，引入了基于收益差的概率奖励，即合作者获得奖励的概率随着参与者与合作者之间收益差的增加而增加。作者利用前面研究中的空间囚徒困境博弈框架，证明了本研究中的奖励除了某些情况外，都实现了合作的进化。
AbstractIn the previous studies, the author proposes the payoff-difference-based probabilistic peer-punishment that the probability of punishing a defector increases as the difference of payoff between a player and a defector increases and shows that the proposed peer-punishment effectively increases the number of cooperators and the average payoff of all players. On the other hand, reward as well as punishment is considered to be a mechanism promoting cooperation, and many studies have discussed the effect of reward in the public goods game, a multiplayer version of the prisoner’s dilemma game. Based on the discussion of those existing studies, this study introduces the payoff-difference-based probabilistic reward that the probability of rewarding a cooperator increases as the difference of payoff between a player and a cooperator increases. The author utilizes the framework of the spatial prisoner’s dilemma game of the previous study and shows that the reward of this study realizes the evolution of cooperation except some cases.Graphic abstract