What is it about?
A general problem in game theory: the payoff matrix (PM) is often arbitrary and the results strongly depend on it. The agent based model considered has not a universal PM for all the agents (i.e. no payoff parameters), rather each agent has its own PM. The strategy AND the PM evolve by natural selection. Starting from a random distribution of strategies & PM (comprising all possible 2x2 games) we end with just one PM corresponding to the CHICKEN game.
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Why is it important?
This is a model without payoffs as parameters, instead the payoffs EMERGE from an evolutionary process. It turns out that the game produced by evolution is a quite common game played by animals in nature: the chicken or snowdrift game.
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This page is a summary of: A minimal model for the evolution of cooperation through evolving heterogeneous games, EPL (Europhysics Letters), January 2008, Institute of Physics Publishing,
DOI: 10.1209/0295-5075/81/48008.
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