The evolutionary public goods game on scale-free networks with heterogeneous investment

The public goods game (PGG) is generally considered as a suitable paradigm to explain ubiquitous cooperative behavior. In this study, we investigated the evolutionary PGG on scale-free networks and studied the effect of individual heterogeneity by setting the cooperator x an investment value correla...

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Bibliographic Details
Published in:Physica A 2010-03, Vol.389 (6), p.1273-1280
Main Authors: Cao, Xian-Bin, Du, Wen-Bo, Rong, Zhi-Hai
Format: Article
Language:English
Subjects:
Complex networks
Cooperation
Evolutionary
Financing
Games
Heterogeneity
Investment
Networks
Public goods game
Statistical mechanics
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Summary:The public goods game (PGG) is generally considered as a suitable paradigm to explain ubiquitous cooperative behavior. In this study, we investigated the evolutionary PGG on scale-free networks and studied the effect of individual heterogeneity by setting the cooperator x an investment value correlated to its degree as I x = N ⋅ k x β / ∑ j k j β , where k x is the degree of x , j runs over all players and β is a tunable parameter. It is shown that the cooperation level is remarkably promoted by negative values of β whereas it is highly depressed by positive values of β . Moreover, the effect of environmental noise has also been investigated. Our result may sharpen the understanding of cooperation induced by the individual diversity.
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2009.11.044