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A Polynomial-time Nash Equilibrium Algorithm for Repeated Stochastic Games

A Polynomial-time Nash Equilibrium Algorithm for Repeated Stochastic Games

This video was recorded at 24th Conference on Uncertainty in Artificial Intelligence (UAI), Helsinki 2008. We present a polynomial-time algorithm that always finds an (approximate) Nash equilibrium for repeated two-player stochastic games. The algorithm exploits the folk theorem to derive a strategy profile that forms an equilibrium by buttressing mutually beneficial behavior with threats, where possible. One component of our algorithm efficiently searches for an approximation of the egalitarian point, the fairest pareto-efficient solution. The paper concludes by applying the algorithm to a set of grid games to illustrate typical solutions the algorithm finds. These solutions compare very favorably to those found by competing algorithms, resulting in strategies with higher social welfare,... Show More

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