Evolving mixed nash equilibria for bimatrix games

  • Authors:
  • David Iclanzan;Noémi Gaskó;D. Dumitrescu

  • Affiliations:
  • Babes-Bolyai University, Cluj Napoca, Romania;Babes-Bolyai University, Cluj Napoca, Romania;Babes-Bolyai University, Cluj Napoca, Romania

  • Venue:
  • Proceedings of the 14th annual conference companion on Genetic and evolutionary computation
  • Year:
  • 2012

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Abstract

In a mixed strategy equilibrium players randomize between their actions according to a very specific probability distribution, even though with regard to the game payoff, they are indifferent between their actions. Currently, there is no compelling model explaining why and how agents may randomize their decisions is such a way, in real world scenarios. In this paper we experiment with a model for bimatrix games, where the goal of the players is to find robust strategies for which the uncertainty in the outcome of the opponent is reduced as much as possible. We show that in an evolutionary setting, the proposed model converges to mixed strategy profiles, if these exist. The result suggest that only local knowledge of the game is sufficient to attain the adaptive convergence.