Searching with partial belief states in general games with incomplete information

  • Authors:
  • Stefan Edelkamp;Tim Federholzner;Peter Kissmann

  • Affiliations:
  • TZI Universität Bremen, Germany;TZI Universität Bremen, Germany;Universität des Saarlandes, Saarbrücken, Germany

  • Venue:
  • KI'12 Proceedings of the 35th Annual German conference on Advances in Artificial Intelligence
  • Year:
  • 2012

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Abstract

In this paper we present a full-fledged player for general games with incomplete information specified in the game description language GDL-II. To deal with uncertainty we introduce a method that operates on partial belief states, which correspond to a subset of the set of states building a full belief state. To search for a partial belief state we present depth-first and Monte-Carlo methods. All can be combined with any traditional general game player, e.g., using minimax or UCT search. Our general game player is shown to be effective in a number of benchmarks and the UCT variant compares positively with the one-and-only winner of an incomplete information track at an international general game playing competition.