arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.01018physics.soc-phnlin.AOq-bio.PE
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社会等级制度促进了合作的盛行

Social hierarchy promotes the cooperation prevalence

Rizhou Liang, Jiqiang Zhang, Guozhong Zheng, Li Chen

摘要:

社会等级是人类社会经济活动中不可忽视的重要因素,也是动物界不可忽视的重要因素。在这里,我们将这个因素纳入进化博弈,看看它会对合作结果产生什么影响。两个参与者之间的概率策略采用不仅取决于他们的收益,而且还取决于他们的等级差异--高等级的参与者比低等级的参与者更有可能复制他们的策略。通过模拟三种等级分布的囚徒困境博弈的演化过程,发现在所有情况下合作水平都得到了提高,并且在统一分布的情况下合作水平的提高是最优的。这种增强是由于层次结构的存在促进了合作集群的形成,高级别的球员作为成核核心。这一机制在巴拉巴西-阿尔伯特无标度网络中仍然有效,特别是当枢纽节点具有较高的社会等级时,合作增强最大。我们还研究了一个两层次模型,在此模型中,我们发现了类似的合作促进机制,并给出了一些理论分析。我们的发现可以部分解释为什么社会等级在这个星球上如此普遍。

英文摘要:

Social hierarchy is important that can not be ignored in human socioeconomic activities and in the animal world. Here we incorporate this factor into the evolutionary game to see what impact it could have on the cooperation outcome. The probabilistic strategy adoption between two players is then not only determined by their payoffs, but also by their hierarchy difference -- players in the high rank are more likely to reproduce their strategies than the peers in the low rank. Through simulating the evolution of Prisoners' dilemma game with three hierarchical distributions, we find that the levels of cooperation are enhanced in all cases, and the enhancement is optimal in the uniform case. The enhancement is due to the fact that the presence of hierarchy facilitates the formation of cooperation clusters with high-rank players acting as the nucleation cores. This mechanism remains valid on Barabási-Albert scale-free networks, in particular the cooperation enhancement is maximal when the hubs are of higher social ranks. We also study a two-hierarchy model, where similar cooperation promotion is revealed and some theoretical analyses are provided. Our finding may partially explain why the social hierarchy is so ubiquitous on this planet.

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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