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arXiv 2302.03265cs.GTcs.MAmath.OCphysics.soc-ph
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噪声与私有评估下间接互惠中合作的演化稳定性

Evolutionary stability of cooperation in indirect reciprocity under noisy and private assessment

Yuma Fujimoto, Hisashi Ohtsuki

AI总结:

本文首次从理论上证明间接互惠合作在私有评估下可演化稳定,发现简单常设(SS)规范稳定而严厉评判(SJ)不稳定,揭示适度简单性是维持合作的关键。

摘要:

间接互惠是解释人类大规模合作的一种机制。在间接互惠中,个体利用声誉来决定是否与伙伴合作,并更新他人的声誉。一个主要问题是选择行动的规则和更新声誉的规则如何演化。在公共声誉情形中,所有个体共享对他人的评价,已知被称为简单常设(SS)和严厉评判(SJ)的社会规范能够维持合作。然而,在个体独立评价他人的私有评估情形下,合作维持的机制在很大程度上仍然未知。本研究首次从理论上证明,在私有评估下,通过间接互惠实现的合作可以是演化稳定的。具体而言,我们发现SS可以是稳定的,但SJ永远不可能稳定。这一点是直观的,因为SS凭借其简单性能够纠正个体间声誉的不一致。另一方面,SJ过于复杂,无法避免误差的累积,从而导致合作的崩溃。我们得出结论:适度的简单性是在私有评估下成功维持合作的关键。我们的结果为人类合作的演化提供了理论基础。

英文摘要:

Indirect reciprocity is a mechanism that explains large-scale cooperation in humans. In indirect reciprocity, individuals use reputations to choose whether or not to cooperate with a partner and update others' reputations. A major question is how the rules to choose their actions and the rules to update reputations evolve. In the public reputation case, where all individuals share the evaluation of others, social norms called Simple Standing (SS) and Stern Judging (SJ) have been known to maintain cooperation. However, in the case of private assessment where individuals independently evaluate others, the mechanism of maintenance of cooperation is still largely unknown. This study theoretically shows for the first time that cooperation by indirect reciprocity can be evolutionarily stable under private assessment. Specifically, we find that SS can be stable, but SJ can never be. This is intuitive because SS can correct interpersonal discrepancies in reputations through its simplicity. On the other hand, SJ is too complicated to avoid an accumulation of errors, which leads to the collapse of cooperation. We conclude that moderate simplicity is a key to success in maintaining cooperation under the private assessment. Our result provides a theoretical basis for evolution of human 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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