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Two-Way Automata over Locally Finite Semirings

  • Louis-Marie Dando
  • Sylvain Lombardy
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10952)

Abstract

Two-way transducers or weighted automata are in general more powerful than one-way ones. We show that two-way automata over locally finite semirings may have undefined behaviour. We prove that it is decidable whether this behaviour is defined, and, if it is, we show that two-way automata over locally finite semirings are equivalent to one-way automata.

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Copyright information

© IFIP International Federation for Information Processing 2018

Authors and Affiliations

  1. 1.LaBRI UMR 5800, Université de Bordeaux, INP Bordeaux, CNRSBordeauxFrance

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