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Dynamic allocation of investments promotes cooperation in spatial public goods game

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Zhang, H., Shi, D., Liu, R., & Wang, B. (2012). Dynamic allocation of investments promotes cooperation in spatial public goods game. Physica A: Statistical Mechanics and its Applications, 391(8), 2617-2622. doi:10.1016/j.physa.2011.12.005.


Cite as: http://hdl.handle.net/21.11116/0000-0006-9933-4
Abstract
In this paper, we introduce a dynamic allocation investment mechanism into the spatial public goods game. In the model, if a cooperator collects more payoffs from one group centered on the player in the last round, he will put more investments to the group in the next round. The intensity of investment is controlled by a tunable parameter . Simulation results show that the emergence of cooperation is remarkably promoted, and a larger induces a higher cooperation level. These interesting phenomena are then extensively explained by pairwise investments, average payoffs and evolution snapshots.