Promoting cooperation by preventing exploitation: The role of network structure.

Promoting cooperation by preventing exploitation: The role of network structure.
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通过防止剥削促进合作:网络结构的作用

DOI:
10.1103/physreve.96.022315
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发表时间:
2017
期刊:
Physical review. E
影响因子:
--
通讯作者:
L. Kocarev
L. Kocarev
中科院分区:
--
文献类型:
--
作者:
Z. Utkovski;V. Stojkoski;L. Basnarkov;L. Kocarev

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越来越多的经验证据表明,社会和合作行为可以受到认知和神经因素的影响,这表明存在基于状态的决策机制,可能已经出现了进化。受这些观察的启发,我们提出了一种简单的匿名网络交互机制,这种机制被确定为广义互惠的一种形式--一种围绕“如果有人帮助,就帮助任何人”的前提组织的概念--并在随机图上研究其动态。在存在这种机制的情况下,合作的演变与投资水平的动态有关(即,合作的概率)。我们证明了合作的倾向是由一个网络中心性的措施,这里被称为邻里重要性指数,并讨论了自然和人工系统的相关影响。为了解决基于状态的策略入侵的叛逃者的鲁棒性,我们还提供了一个分析,重新定义的情况下,当一小部分的节点表现为无条件的叛逃者的结果。
A growing body of empirical evidence indicates that social and cooperative behavior can be affected by cognitive and neurological factors, suggesting the existence of state-based decision-making mechanisms that may have emerged by evolution. Motivated by these observations, we propose a simple mechanism of anonymous network interactions identified as a form of generalized reciprocity—a concept organized around the premise “help anyone if helped by someone'—and study its dynamics on random graphs. In the presence of such a mechanism, the evolution of cooperation is related to the dynamics of the levels of investments (i.e., probabilities of cooperation) of the individual nodes engaging in interactions. We demonstrate that the propensity for cooperation is determined by a network centrality measure here referred to asneighborhood importance indexand discuss relevant implications to natural and artificial systems. To address the robustness of the state-based strategies to an invasion of defectors, we additionally provide an analysis which redefines the results for the case when a fraction of the nodes behave as unconditional defectors.
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