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DOI: 10.4230/LIPIcs.STACS.2016.11

Entropy Games and Matrix Multiplication Games

Authors: Eugene Asarin, Julien Cervelle, Aldric Degorre, Catalin Dima, Florian Horn, and Victor Kozyakin

Published in: LIPIcs, Volume 47, 33rd Symposium on Theoretical Aspects of Computer Science (STACS 2016)

Abstract

Two intimately related new classes of games are introduced and studied: entropy games (EGs) and matrix multiplication games (MMGs). An EG is played on a finite arena by two-and-a-half players: Despot, Tribune and the non-deterministic People. Despot wants to make the set of possible People's behaviors as small as possible, while Tribune wants to make it as large as possible. An MMG is played by two players that alternately write matrices from some predefined finite sets. One wants to maximize the growth rate of the product, and the other to minimize it. We show that in general MMGs are undecidable in quite a strong sense. On the positive side, EGs correspond to a subclass of MMGs, and we prove that such MMGs and EGs are determined, and that the optimal strategies are simple. The complexity of solving such games is in NP cap coNP.

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Eugene Asarin, Julien Cervelle, Aldric Degorre, Catalin Dima, Florian Horn, and Victor Kozyakin. Entropy Games and Matrix Multiplication Games. In 33rd Symposium on Theoretical Aspects of Computer Science (STACS 2016). Leibniz International Proceedings in Informatics (LIPIcs), Volume 47, pp. 11:1-11:14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)

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@InProceedings{asarin_et_al:LIPIcs.STACS.2016.11,
  author =	{Asarin, Eugene and Cervelle, Julien and Degorre, Aldric and Dima, Catalin and Horn, Florian and Kozyakin, Victor},
  title =	{{Entropy Games and Matrix Multiplication Games}},
  booktitle =	{33rd Symposium on Theoretical Aspects of Computer Science (STACS 2016)},
  pages =	{11:1--11:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-001-9},
  ISSN =	{1868-8969},
  year =	{2016},
  volume =	{47},
  editor =	{Ollinger, Nicolas and Vollmer, Heribert},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.STACS.2016.11},
  URN =		{urn:nbn:de:0030-drops-57129},
  doi =		{10.4230/LIPIcs.STACS.2016.11},
  annote =	{Keywords: game theory, entropy, joint spectral radius}
}

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Entropy Games and Matrix Multiplication Games

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