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arXiv 1302.3546physics.soc-phcond-mat.stat-mechq-bio.PE
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附条件惩罚对公共合作演进的有效性

Effectiveness of conditional punishment for the evolution of public cooperation

Attila Szolnoki, Matjaz Perc

摘要:

集体行动,从城市马拉松到劳工罢工,往往是群众驱动的,并受到滚雪球效应的影响。基于此,我们研究了空间公共产品博弈中有条件惩罚的演化优势。与无条件惩罚者总是对叛逃者处以相同的罚款不同,有条件惩罚者的罚款与群体中其他惩罚者的数量成比例。根据惩罚罚金和惩罚成本的相图可以看出,两种惩罚者不能共存。这两种策略的自发粗化导致了与叛逃者的间接领土竞争,只有在制裁成本不高的情况下,无条件惩罚者才能赢得这场竞争。否则,条件惩罚者是间接竞争的胜利者,这表明在更现实的条件下,他们确实是更有效的策略。连续和不连续的相变以及三临界点表征了复杂的演化动力学,这是由于条件惩罚引入的多点相互作用。我们提出间接的领土竞争作为一个普遍适用的机制依赖于斑图形成,通过这种空间结构可以利用看似从属的策略,以避免进化灭绝。

英文摘要:

Collective actions, from city marathons to labor strikes, are often mass-driven and subject to the snowball effect. Motivated by this, we study evolutionary advantages of conditional punishment in the spatial public goods game. Unlike unconditional punishers who always impose the same fines on defectors, conditional punishers do so proportionally with the number of other punishers in the group. Phase diagrams in dependence on the punishment fine and cost reveal that the two types of punishers cannot coexist. Spontaneous coarsening of the two strategies leads to an indirect territorial competition with the defectors, which is won by unconditional punishers only if the sanctioning is inexpensive. Otherwise conditional punishers are the victors of the indirect competition, indicating that under more realistic conditions they are indeed the more effective strategy. Both continuous and discontinuous phase transitions as well as tricritical points characterize the complex evolutionary dynamics, which is due to multipoint interactions that are introduced by conditional punishment. We propose indirect territorial competition as a generally applicable mechanism relying on pattern formation, by means of which spatial structure can be utilized by seemingly subordinate strategies to avoid evolutionary extinction.

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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