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Uniform Sampling for Networks of Automata

Authors Nicolas Basset, Jean Mairesse, Michèle Soria

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Nicolas Basset
Jean Mairesse
Michèle Soria

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Nicolas Basset, Jean Mairesse, and Michèle Soria. Uniform Sampling for Networks of Automata. In 28th International Conference on Concurrency Theory (CONCUR 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 85, pp. 36:1-36:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017) https://doi.org/10.4230/LIPIcs.CONCUR.2017.36

Abstract

We call network of automata a family of partially synchronised automata, i.e. a family of deterministic automata which are synchronised via shared letters, and evolve independently otherwise. We address the problem of uniform random sampling of words recognised by a network of automata.
To that purpose, we define the reduced automaton of the model, which involves only the product of the synchronised part of the component automata. We provide uniform sampling algorithms which are polynomial with respect to the size of the reduced automaton, greatly improving on the best known algorithms. Our sampling algorithms rely on combinatorial and probabilistic methods and are of three different types: exact, Boltzmann and Parry sampling.

Subject Classification

Keywords
  • Partially synchronised automata
  • uniform sampling; recursive method
  • Boltzmann sampling
  • Parry measure

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