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ATL with Strategy Contexts and Bounded Memory

Published: 03 January 2009 Publication History

Abstract

We extend the alternating-time temporal logics <Emphasis FontCategory="SansSerif">ATL</Emphasis> and <Emphasis FontCategory="SansSerif">ATL</Emphasis> * with <em>strategy contexts</em> and <em>memory constraints</em> : the first extension makes strategy quantifiers to not "forget" the strategies being executed by the other players. The second extension allows strategy quantifiers to restrict to memoryless or bounded-memory strategies.
We first consider expressiveness issues. We show that our logics can express important properties such as equilibria, and we formally compare them with other similar formalisms (<Emphasis FontCategory="SansSerif">ATL</Emphasis>, <Emphasis FontCategory="SansSerif">ATL</Emphasis> *, Game Logic, Strategy Logic, ...). We then address the problem of model-checking for our logics, especially we provide a <Emphasis FontCategory="SansSerif">PSPACE</Emphasis> algorithm for the sublogics involving only memoryless strategies and an <Emphasis FontCategory="SansSerif">EXPSPACE</Emphasis> algorithm for the bounded-memory case.

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cover image Guide Proceedings
LFCS '09: Proceedings of the 2009 International Symposium on Logical Foundations of Computer Science
January 2009
467 pages
ISBN:9783540926863
  • Editors:
  • Sergei Artemov,
  • Anil Nerode

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Springer-Verlag

Berlin, Heidelberg

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Published: 03 January 2009

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