Analyzing Social Network Structures in the Iterated Prisoner's Dilemma with Choice and Refusal

摘要

The Iterated Prisoner's Dilemma with Choice and Refusal (IPD/CR) is anextension of the Iterated Prisoner's Dilemma with evolution that allows playersto choose and to refuse their game partners. From individual behaviors,behavioral population structures emerge. In this report, we examine oneparticular IPD/CR environment and document the social network methods used toidentify population behaviors found within this complex adaptive system. Incontrast to the standard homogeneous population of nice cooperators, we havealso found metastable populations of mixed strategies within this environment.In particular, the social networks of interesting populations and theirevolution are examined.