二维平面异质小世界网络上的囚徒博弈

摘要

探讨了基于二维网格构建的异质小世界网络上的演化囚徒博弈,研究了该网络结构的异质性对合作水平的影响.研究发现,网络中异质节点和长程边数在中等水平时,网络的合作水平最高,过多和过少的异质节点和长程边数均不能使合作水平达到最高.此外,不同于同质网络,在特定的条件下,异质网络平均连接度的增加仍然会促进合作水平的提高.%We investigate an evolutionary prisoner s dilemma on a heterogeneous small-world network based on a two-dimension lattice. The main work is to study the influence of topological heterogeneity on cooperation level. We found that the cooperation level peaks when heterogeneity is intermediate, which means that the most heterogeneous cases and the most homogeneous ones did not favor the cooperators. Besides, increasing average degree of heterogeneous network can still promote cooperation under specified conditions, which is different from homogeneous net-work.