Optimism when winning and cautiousness when losing promote cooperation in the spatial prisoner’s dilemma game
Optimism when winning and cautiousness when losing promote cooperation in the spatial prisoner’s dilemma game
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DOI：
10.1016/j.physa.2014.04.029
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发表时间：
2014-08
影响因子：
3.3
通讯作者：
Guang-Hai Cui;Mingchu Li;Xinxin Fan;Nakema Deonauth;Zhen Wang
中科院分区：
文献类型：
--
作者：
Guang-Hai Cui;Mingchu Li;Xinxin Fan;Nakema Deonauth;Zhen Wang
在真实的社会中，个体是否参与没有希望的互动有时是一个概率选项，而不是一个全有或全无的选项，根据互动的风险而变化。受此启发，我们引入了一个模仿诱导的调节机制，个人的互动意愿到空间囚犯的困境游戏，其中一个人降低其互动意愿时，它模仿别人和增加时，它被别人模仿。每个时间间隔的调整值被定义为个体互动意愿的调整敏感度。大量仿真结果表明，该机制能有效地促进合作，且较高的调整灵敏度对合作的维持有更积极的影响。这种提升主要是因为幸存的合作者能够通过与周围交往意愿较低的背叛者交往来抵御背叛者的入侵。最后，在另外两个场景中证明了这种提升的通用性。
In real societies, whether an individual participates in unpromising interactions sometimes is a probabilistic option instead of an all-or-nothing option, changing according to the risk of interactions. Inspired by this, we introduce an imitation-induced adjustment mechanism of individual willingness to interact into the spatial prisoner’s dilemma game, where an individual decreases its willingness to interact when it imitates others and increases when it is imitated by others. The adjustment value at each time interval is defined as the adjustment sensitivity of individual willingness to interact. Extensive simulation results show that the proposed mechanism can promote cooperation effectively, and a higher adjustment sensitivity has a more positive influence on the maintenance of cooperation. This promotion is mainly because the survived cooperators can resist the invasion of defectors, through interacting with defectors with lower willingness to interact around them. Finally, the generality of this promotion is testified in two additional scenarios.