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Cooperation in costly-access environments

机译:在昂贵的接入环境中进行合作

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摘要

Understanding cooperative behavior in biological and social systems constitutes a scientific challenge, being the object of intense research over the past decades. Many mechanisms have been proposed to explain the presence and persistence of cooperation in those systems, showing that there is no unique explanation, as different scenarios have different possible driving forces. In this paper, we propose a model to study situations in which voluntary participation involves an access cost to the cooperative interaction, besides the cost associated with cooperation. The proposed costly-access prisoner's dilemma (PD), a symmetric donation game with voluntary and costly participation, breaks the symmetry between abstainers and participants of the voluntary PD. A mean-field approach shows that, in well-mixed populations, the dynamic always leads the system to abstention. However, depending on the return parameter, numerical simulations in structured populations display an alternating behavior between mono-strategic, multi-stable, and coexistence phases. This behavior is fully explained through a theoretical analysis of the strategic motifs, the transitions being determined by the change in stability of those motifs.
机译:理解生物和社会系统中的合作行为是一项科学挑战,是过去几十年来深入研究的对象。已经提出了许多机制来解释这些系统中合作的存在和持久性,这表明没有独特的解释,因为不同的情景具有不同的可能驱动力。在本文中,我们提出了一个模型来研究自愿参与的情况,其中除了与合作相关的成本外,还涉及合作互动的获取成本。拟议的昂贵获取囚徒困境 (PD) 是一种自愿且成本高昂的参与的对称捐赠游戏,打破了弃权者和自愿 PD 参与者之间的对称性。平均场方法表明,在混合良好的人群中,动态总是导致系统弃权。然而,根据返回参数的不同,结构化种群中的数值模拟显示出单策略、多稳态和共存阶段之间的交替行为。通过对战略主题的理论分析,可以充分解释这种行为,这些主题的稳定性变化决定了过渡。

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