Kuperman M N, Risau-Gusman S
Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Jul;86(1 Pt 2):016104. doi: 10.1103/PhysRevE.86.016104. Epub 2012 Jul 10.
In recent years the prisoner's dilemma has become a paradigm for the study of the emergence of cooperation in spatially structured populations. Such a structure is usually assumed to be given by a graph. In general, the success of cooperative strategies is associated with the possibility of forming globular clusters, which in turn depends on a feature of the network that is measured by its clustering coefficient. In this work we study the dependence of the success of cooperation on this coefficient for regular networks. Additionally, for both stochastic and deterministic dynamics we show that there is a strong dependence on the initial composition of the population. This hints at the existence of several different mechanisms that could promote or hinder cluster expansion. We have studied in detail some of these mechanisms by concentrating on completely ordered networks (large clustering coefficient) or completely random networks (vanishing clustering coefficient).
近年来，囚徒困境已成为研究空间结构化种群中合作出现的范例。这种结构通常被假定为由一个图给出。一般来说，合作策略的成功与形成球状簇的可能性相关联，而这又反过来取决于通过聚类系数测量的网络特征。在这项工作中，我们研究了规则网络中合作成功对该系数的依赖性。此外，对于随机和确定性动力学，我们都表明对种群的初始组成有很强的依赖性。这暗示了可能存在几种促进或阻碍簇扩展的不同机制。我们通过专注于完全有序网络（大聚类系数）或完全随机网络（零聚类系数）详细研究了其中一些机制。
