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- Title
Pseudopolynomial iterative algorithm to solve total-payoff games and min-cost reachability games.
- Authors
Brihaye, Thomas; Geeraerts, Gilles; Haddad, Axel; Monmege, Benjamin
- Abstract
Quantitative games are two-player zero-sum games played on directed weighted graphs. Total-payoff games-that can be seen as a refinement of the well-studied mean-payoff games-are the variant where the payoff of a play is computed as the sum of the weights. Our aim is to describe the first pseudo-polynomial time algorithm for total-payoff games in the presence of arbitrary weights. It consists of a non-trivial application of the value iteration paradigm. Indeed, it requires to study, as a milestone, a refinement of these games, called min-cost reachability games, where we add a reachability objective to one of the players. For these games, we give an efficient value iteration algorithm to compute the values and optimal strategies (when they exist), that runs in pseudo-polynomial time. We also propose heuristics to speed up the computations.
- Subjects
POLYNOMIALS; ITERATIVE methods (Mathematics); WEIGHTED graphs; COMPUTATIONAL geometry; HEURISTIC
- Publication
Acta Informatica, 2017, Vol 54, Issue 1, p85
- ISSN
0001-5903
- Publication type
Article
- DOI
10.1007/s00236-016-0276-z