Physics – Physics and Society
Scientific paper
2010-07-23
Phys. Rev. E 82 (2010) 021115
Physics
Physics and Society
7 two-column pages, 5 figures; accepted for publication in Physical Review E
Scientific paper
10.1103/PhysRevE.82.021115
Strategy changes are an essential part of evolutionary games. Here we introduce a simple rule that, depending on the value of a single parameter $w$, influences the selection of players that are considered as potential sources of the new strategy. For positive $w$ players with high payoffs will be considered more likely, while for negative $w$ the opposite holds. Setting $w$ equal to zero returns the frequently adopted random selection of the opponent. We find that increasing the probability of adopting the strategy from the fittest player within reach, i.e. setting $w$ positive, promotes the evolution of cooperation. The robustness of this observation is tested against different levels of uncertainty in the strategy adoption process and for different interaction network. Since the evolution to widespread defection is tightly associated with cooperators having a lower fitness than defectors, the fact that positive values of $w$ facilitate cooperation is quite surprising. We show that the results can be explained by means of a negative feedback effect that increases the vulnerability of defectors although initially increasing their survivability. Moreover, we demonstrate that the introduction of $w$ effectively alters the interaction network and thus also the impact of uncertainty by strategy adoptions on the evolution of cooperation.
Perc Matjaz
Wang Zhen
No associations
LandOfFree
Aspiring to the fittest and promotion of cooperation in the prisoner's dilemma game does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aspiring to the fittest and promotion of cooperation in the prisoner's dilemma game, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspiring to the fittest and promotion of cooperation in the prisoner's dilemma game will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-138916