Adapting populations of agents

  • Authors:
  • Philippe De Wilde;Maria Chli;L. Correia;R. Ribeiro;P. Mariano;V. Abramov;J. Goossenaerts

  • Affiliations:
  • Intelligent and Interactive Systems Group, Department of Electrical and Electronic Engineering, Imperial College London, London, United Kingdom;Intelligent and Interactive Systems Group, Department of Electrical and Electronic Engineering, Imperial College London, London, United Kingdom;Universidade Nova de Lisboa, Monte Caparica, Portugal;Universidade Nova de Lisboa, Monte Caparica, Portugal;Universidade Nova de Lisboa, Monte Caparica, Portugal;Eindhoven University of Technology, Eindhoven, The Netherlands;Eindhoven University of Technology, Eindhoven, The Netherlands

  • Venue:
  • Adaptive agents and multi-agent systems
  • Year:
  • 2003

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Abstract

We control a population of interacting software agents. The agents have a strategy, and receive a payoff for executing that strategy. Unsuccessful agents become extinct. We investigate the repercussions of maintaining a diversity of agents. There is often no economic rationale for this. If maintaining diversity is to be successful, i.e. without lowering too much the payoff for the non-endangered strategies, it has to go on forever, because the non-endangered strategies still get a good payoff, so that they continue to thrive, and continue to endanger the endangered strategies. This is not sustainable if the number of endangered ones is of the same order as the number of non-endangered ones. We also discuss niches, islands. Finally, we combine learning as adaptation of individual agents with learning via selection in a population.