Cooperation enhanced by inhomogeneous activity of teaching for evolutionary Prisoner's Dilemma games

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Abstract

Evolutionary Prisoner's Dilemma games with quenched inhomogeneities in the spatial dynamical rules are considered. The players following one of the two pure strategies (cooperation or defection) are distributed on a two-dimensional lattice. The rate of strategy adoption from randomly chosen neighbors is controlled by the payoff difference and a two-value pre-factor w characterizing the players whom the strategy learned from. The reduced teaching activity of players is distributed randomly with concentrations ν at the beginning and fixed further on. Numerical and analytical calculations are performed to study the concentration of cooperators as a function of w and ν for different noise levels and connectivity structures. Significant increase of cooperation is found within a wide range of parameters for this dynamics. The results highlight the importance of asymmetry characterizing the exchange of master-follower role during the strategy adoptions.

Original languageEnglish
Article number30004
JournalEPL
Volume77
Issue number3
DOIs
Publication statusPublished - Feb 1 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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