Article

Diversity of rationality affects the evolution of cooperation.

Institute of Theoretical Physics, Lanzhou University, Lanzhou, Gansu 730000, China.
Physical Review E (impact factor: 2.26). 06/2009; 79(5 Pt 2):055101. pp.055101
Source: PubMed

ABSTRACT By modifying the Fermi updating rule, we present the diversity of individual rationality to the evolutionary prisoner's dilemma game, and our results shows that this diversity heavily influences the evolution of cooperation. Cluster-forming mechanism of cooperators can either be highly enhanced or severely deteriorated by different distributions of rationality. Slight change in the rationality distribution may transfer the whole system from the global absorbing state of cooperators to that of defectors. Based on mean-field argument, quantitative analysis of the stability of cooperative clusters reveals the critical role played by agents with moderate degree values in the evolution of the whole system. The inspiration from our work may provide us a deeper comprehension toward some social phenomena.

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Keywords

agents
 
cooperative clusters
 
different distributions
 
evolutionary prisoner's dilemma game
 
Fermi updating rule
 
global absorbing state
 
individual rationality
 
mean-field argument
 
modifying
 
rationality
 
rationality distribution
 
Slight change
 
social phenomena
 

Yu-Zhong Chen