Comptes Rendus
Game Theory/Complex Analysis
A policy iteration algorithm for zero-sum stochastic games with mean payoff
[Algorithme d'itération sur les politiques pour les jeux stochastiques à somme nulle avec gain moyen]
Comptes Rendus. Mathématique, Volume 343 (2006) no. 5, pp. 377-382.

Nous donnons un algorithme d'itération sur les politiques pour résoudre les jeux stochastiques à somme nulle, avec espaces d'état et d'action finis, en information parfaite, lorsque la valeur du jeu est définie en termes de gain moyen par tour. Cet algorithme ne demande pas que les chaînes de Markov déterminées par les stratégies des deux joueurs soient irréductibles. Il repose sur un analogue discret non-linéaire de la notion de réduite d'une fonction surharmonique.

We give a policy iteration algorithm to solve zero-sum stochastic games with finite state and action spaces and perfect information, when the value is defined in terms of the mean payoff per turn. This algorithm does not require any irreducibility assumption on the Markov chains determined by the strategies of the players. It is based on a discrete nonlinear analogue of the notion of reduction of a super-harmonic function.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2006.07.011

Jean Cochet-Terrasson 1 ; Stéphane Gaubert 2

1 CGA, 14, rue Saint Dominique, 75007 Paris, France
2 INRIA, domaine de Voluceau, B.P. 105, 78153 Le Chesnay cedex, France
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Jean Cochet-Terrasson; Stéphane Gaubert. A policy iteration algorithm for zero-sum stochastic games with mean payoff. Comptes Rendus. Mathématique, Volume 343 (2006) no. 5, pp. 377-382. doi : 10.1016/j.crma.2006.07.011. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2006.07.011/

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