Evolution of Cooperation and Coordination in a Dynamically Networked Society

Details Evolution of Cooperation and Coordination in a Dynamically Networked Society Evolution of Cooperation and Coordination in a Dynamically Networked Society

2008-05-05

arxiv.org/abs/0805.0481v1

Physics

Physics and Society

18 pages, 14 figures. to appear

Scientific paper

10.1162/biot.2008.3.2.139

Situations of conflict giving rise to social dilemmas are widespread in society and game theory is one major way in which they can be investigated. Starting from the observation that individuals in society interact through networks of acquaintances, we model the co-evolution of the agents' strategies and of the social network itself using two prototypical games, the Prisoner's Dilemma and the Stag Hunt. Allowing agents to dismiss ties and establish new ones, we find that cooperation and coordination can be achieved through the self-organization of the social network, a result that is non-trivial, especially in the Prisoner's Dilemma case. The evolution and stability of cooperation implies the condensation of agents exploiting particular game strategies into strong and stable clusters which are more densely connected, even in the more difficult case of the Prisoner's Dilemma.

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