期刊
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
卷 388, 期 21, 页码 4646-4650出版社
ELSEVIER
DOI: 10.1016/j.physa.2009.07.031
关键词
Cooperation; Public goods game; Preferential selection
资金
- National Basic Research Program of China [2006CB705500]
- National Natural Science Foundation of China [60744003, 1063504010532060]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20060358065]
- National Science Fund for Fostering Talents in Basic Science [J0630319]
- CAS Special Grant for Postgraduate Research, innovation and Practice
- Major State Basic Research Development Program of China [2004CB318109]
- Program for New Century Excellent Talents in University [NCET-07-0787]
We introduce a preferential selection mechanism into a spatial public goods game where players are located on a square lattice. Each individual chooses one of its neighbors as a reference with a probability proportional to exp(P-y * A), where P-y is the neighbor's payoff and A (>= 0) is a tunable parameter. It is shown that the introduction of such a preferential selection can remarkably promote the emergence of cooperation over a wide range of the multiplication factor. We find that the mean payoffs of cooperators along the boundary are higher than that of defectors and cooperators form larger clusters as A increases. The extinction thresholds of cooperators and defectors for different values of noise are also investigated. (C) 2009 Elsevier B.V. All rights reserved.
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