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When is Containment Decidable for Probabilistic Automata?

Authors Laure Daviaud, Marcin Jurdzinski, Ranko Lazic, Filip Mazowiecki, Guillermo A. Pérez , James Worrell

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Author Details

Laure Daviaud
  • University of Warwick, Coventry, UK
Marcin Jurdzinski
  • University of Warwick, Coventry, UK
Ranko Lazic
  • University of Warwick, Coventry, UK
Filip Mazowiecki
  • Université de Bordeaux, Bordeaux, France
Guillermo A. Pérez
  • Université libre de Bruxelles, Brussels, Belgium
James Worrell
  • University of Oxford, Oxford, UK

Funding

L. Daviaud, M. Jurdziński, and R. Lazić have been supported by the EPSRC grant EP/P020992/1.
  • Lazic, Ranko: R. Lazić has been supported by a Leverhulme Trust Research Fellowship RF-2017-579.
  • Mazowiecki, Filip: F. Mazowiecki has been supported by the French National Research Agency (ANR) in the frame of the "Investments for the future" Programme IdEx Bordeaux (ANR-10-IDEX-03-02).
  • Pérez, Guillermo A.: G. A. Pérez has been supported by an F.R.S.-FNRS Aspirant fellowship and an FWA postdoc fellowship.
  • Worrell, James: J. Worrell has been supported by the EPSRC Fellowship EP/N008197/1.

Cite As Get BibTex

Laure Daviaud, Marcin Jurdzinski, Ranko Lazic, Filip Mazowiecki, Guillermo A. Pérez, and James Worrell. When is Containment Decidable for Probabilistic Automata?. In 45th International Colloquium on Automata, Languages, and Programming (ICALP 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 107, pp. 121:1-121:14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018) https://doi.org/10.4230/LIPIcs.ICALP.2018.121

Abstract

The containment problem for quantitative automata is the natural quantitative generalisation of the classical language inclusion problem for Boolean automata. We study it for probabilistic automata, where it is known to be undecidable in general. We restrict our study to the class of probabilistic automata with bounded ambiguity. There, we show decidability (subject to Schanuel's conjecture) when one of the automata is assumed to be unambiguous while the other one is allowed to be finitely ambiguous. Furthermore, we show that this is close to the most general decidable fragment of this problem by proving that it is already undecidable if one of the automata is allowed to be linearly ambiguous.

Subject Classification

ACM Subject Classification
  • Theory of computation → Quantitative automata
  • Theory of computation → Probabilistic computation
Keywords
  • Probabilistic automata
  • Containment
  • Emptiness
  • Ambiguity

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