@misc{cogprints1775,
          volume = {2},
          number = {3},
          author = {Bruce Edmonds},
          editor = {Nigel Gilbert},
           title = {Gossip, Sexual Recombination and the El Farol Bar: modelling the emergence of heterogeneity},
       publisher = {University of Surrey},
         journal = {Journal of Artificial Societies and Social Simulation},
            year = {1999},
        keywords = {learning, social, agents, genetic programming, heterogenaity, emergence, representation, expressiveness, naming, simulation, economics, multi-agent systems},
             url = {http://cogprints.org/1775/},
        abstract = {Brian Arthur's `El Farol Bar' model is extended so that the agents also learn and communicate. The learning and communication is implemented using an evolutionary process acting upon a population of mental models inside each agent. The evolutionary process is based on a Genetic Programming algorithm. Each gene is composed of two tree-structures: one to control its action and one to determine its communication. A detailed case-study from the simulations show how the agents have differentiated so that by the end of the run they had taken on very different roles. Thus the introduction of a flexible learning process and an expressive internal representation has allowed the emergence of heterogeneity.}
}

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