arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1507.00717q-bio.PEcs.GTphysics.soc-ph
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群体互动中形象评分下合作的稳定性

Stability of cooperation under image scoring in group interactions

Heinrich H. Nax, Matjaz Perc, Attila Szolnoki, Dirk Helbing

摘要:

在重复的两人囚徒困境中,形象评分通过间接互惠维持合作,即使背叛是一次性游戏中唯一占主导地位的自私行为。然而,现实世界中的许多困境,首先,发生在群体中,其次,缺乏必要的透明度,以可靠地告知主体其他人的个人过去的行动。相反,有关于群体的信息的披露,这允许“群体评分”,但不允许图像评分。在这里,我们研究了如何敏感的积极的结果,图像评分是基于组评分的信息。我们结合分析结果和计算机模拟,指定的合作出现的条件。我们表明,在纯组评分,即在完全没有图像评分信息,合作是不可持续的。然而,与这种极端情况不同,图像评分相对于组评分的必要程度取决于群体大小,并且通常非常小。因此,我们得出结论,积极的结果,图像评分的基础上适用于更广泛的信息设置,在现实世界中是相关的比以前假设的。

英文摘要:

Image scoring sustains cooperation in the repeated two-player prisoner's dilemma through indirect reciprocity, even though defection is the uniquely dominant selfish behaviour in the one-shot game. Many real-world dilemma situations, however, firstly, take place in groups and, secondly, lack the necessary transparency to inform subjects reliably of others' individual past actions. Instead, there is revelation of information regarding groups, which allows for `group scoring' but not for image scoring. Here, we study how sensitive the positive results related to image scoring are to information based on group scoring. We combine analytic results and computer simulations to specify the conditions for the emergence of cooperation. We show that under pure group scoring, that is, under the complete absence of image-scoring information, cooperation is unsustainable. Away from this extreme case, however, the necessary degree of image scoring relative to group scoring depends on the population size and is generally very small. We thus conclude that the positive results based on image scoring apply to a much broader range of informational settings that are relevant in the real world than previously assumed.

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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