The European Physical Journal B - Condensed Matter and Complex Systems

, Volume 53, Issue 3, pp 411–415

Effects of average degree on cooperation in networked evolutionary game

Interdisciplinary Physics

DOI: 10.1140/epjb/e2006-00395-2

Cite this article as:
Tang, C., Wang, W., Wu, X. et al. Eur. Phys. J. B (2006) 53: 411. doi:10.1140/epjb/e2006-00395-2


We study effects of average degree on cooperation in the networked prisoner's dilemma game. Typical structures are considered, including random networks, small-world networks and scale-free networks. Simulation results show that the average degree plays a universal role in cooperation occurring on all these networks, that is the density of cooperators peaks at some specific values of the average degree. Moreover, we investigated the average payoff of players through numerical simulations together with theoretical predictions and found that simulation results agree with the predictions. Our work may be helpful in understanding network effects on the evolutionary games.


02.50.Le Decision theory and game theory89.75.Hc Networks and genealogical trees89.65.-s Social and economic systems05.10.-a Computational methods in statistical physics and nonlinear dynamics

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of Modern Physics and Nonlinear Science CenterUniversity of Science and Technology of ChinaHefeiP.R. China