Reactive automata

  • Authors:
  • Maxime Crochemore;Dov M. Gabbay

  • Affiliations:
  • Université Paris-Est, France and King's College London, London WC2R 2LS, UK;Bar Ilan University, Israel and King's College London, London WC2R 2LS, UK

  • Venue:
  • Information and Computation
  • Year:
  • 2011

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Abstract

A reactive automaton has extra links whose role is to change the behaviour of the automaton. We show that these links do not increase the expressiveness of finite automata but that they can be used to reduce dramatically their state number both in the deterministic case and the non-deterministic case. Typical examples of regular expressions associated with deterministic automata of exponential size according to the length of the expression show that reactive links provide an alternative representation of total linear size for the language.