Networking Effects on Cooperation in Evolutionary Snowdrift Game

Details Networking Effects on Cooperation in Evolutionary Snowdrift Game Networking Effects on Cooperation in Evolutionary Snowdrift Game

2006-02-06

arxiv.org/abs/physics/0602039v2

Physics

Physics and Society

Changed content

Scientific paper

10.1209/epl/i2006-10323-2

The effects of networking on the extent of cooperation emerging in a competitive setting are studied. The evolutionary snowdrift game, which represents a realistic alternative to the well-known Prisoner's Dilemma, is studied in the Watts-Strogatz network that spans the regular, small-world, and random networks through random re-wiring. Over a wide range of payoffs, a re-wired network is found to suppress cooperation when compared with a well-mixed or fully connected system. Two extinction payoffs, that characterize the emergence of a homogeneous steady state, are identified. It is found that, unlike in the Prisoner's Dilemma, the standard deviation of the degree distribution is the dominant network property that governs the extinction payoffs.

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