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Conference Papers Year : 2014

The tropical shadow-vertex algorithm solves mean payoff games in polynomial time on average

Abstract

We introduce an algorithm which solves mean payoff games in polynomial time on average, assuming the distribution of the games satisfies a flip invariance property on the set of actions associated with every state. The algorithm is a tropical analogue of the shadow-vertex simplex algorithm, which solves mean payoff games via linear feasibility problems over the tropical semiring (ℝ∪{−∞},max,+). The key ingredient in our approach is that the shadow-vertex pivoting rule can be transferred to tropical polyhedra, and that its computation reduces to optimal assignment problems through Plücker relations.

Dates and versions

hal-01096447 , version 1 (17-12-2014)

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Xavier Allamigeon, Pascal Benchimol, Stéphane Gaubert. The tropical shadow-vertex algorithm solves mean payoff games in polynomial time on average. ICALP 2014, Jul 2014, Copenhagen, France. pp.12, ⟨10.1007/978-3-662-43948-7_8⟩. ⟨hal-01096447⟩
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