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Derivatives and finite automata of expressions in star normal form

  • Haiming Chen*
  • , Ping Lu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper studies derivatives and automata for expressions in star normal form as defined by Brüggemann-Klein. For an expression in star normal form, the paper shows that the derivatives are either ∅ or unique, while in general Berry and Sethi’s result shows the derivatives are either ∅ or similar. It is known that the partial derivative automaton and the follow automaton are two small automata, each of which is a quotient of the position automaton. For the relation between the partial derivative and follow automata, however, Ilie and Yu stated that a rigorous analysis is necessary but difficult. The paper tackles the issue, and presents several results. Our work shows that there are different conditions under which the relation of the two automata can be different.

Original languageEnglish
Title of host publicationLanguage and Automata Theory and Applications - 11th International Conference, LATA 2017, Proceedings
EditorsFrank Drewes, Carlos Martín-Vide, Bianca Truthe
PublisherSpringer Verlag
Pages236-248
Number of pages13
ISBN (Print)9783319537320
DOIs
StatePublished - 2017
Event11th International Conference on Language and Automata Theory and Applications, LATA 2017 - Umea, Sweden
Duration: 6 Mar 20179 Mar 2017

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume10168 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference11th International Conference on Language and Automata Theory and Applications, LATA 2017
Country/TerritorySweden
City Umea
Period6/03/179/03/17

Keywords

  • Derivatives
  • Finite automata
  • Partial derivatives
  • Regular expressions
  • Star normal form

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