Assenza Salvatore, Gómez-Gardeñes Jesús, Latora Vito
Scuola Superiore di Catania, Via S. Nullo 5/i, 95123 Catania, Italy.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jul;78(1 Pt 2):017101. doi: 10.1103/PhysRevE.78.017101. Epub 2008 Jul 3.
We study the effect of clustering on the organization of cooperation by analyzing the evolutionary dynamics of the "Prisoner's Dilemma" on scale-free networks with a tunable value of clustering. We find, on the one hand, that a high value of the clustering coefficient produces an overall enhancement of cooperation in the network, even for a very high temptation to defect. On the other hand, high clustering homogenizes the process of invasion of degree classes by defectors, decreasing the chances of survival of low densities of cooperators in the network.
我们通过分析具有可调聚类值的无标度网络上“囚徒困境”的演化动力学，研究聚类对合作组织的影响。一方面，我们发现聚类系数的高值会使网络中的合作整体增强，即使在背叛诱惑非常高的情况下也是如此。另一方面，高聚类会使背叛者对不同度类的入侵过程趋于同质化，降低网络中低密度合作者的生存机会。
