Generalizations of Code Languages with Marginal Errors

Sang Ki Ko, Yo Sub Han, Kai Salomaa

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The k-prefix-free, k-suffix-free and k-infix-free languages generalize the prefix-free, suffix-free and infix-free languages by allowing marginal errors. For example, a string x in a k-prefix-free language L can be a prefix of up to k different strings in L. We also define finitely prefix-free languages in which a string x can be a prefix of finitely many strings. We present efficient algorithms that determine whether or not a given regular language is k-prefix-free, k-suffix-free or k-infix-free, and analyze the time complexity of the algorithms. We establish undecidability results for deciding these properties for (linear) context-free languages.

Original languageEnglish
Article number2141005
Pages (from-to)509-529
Number of pages21
JournalInternational Journal of Foundations of Computer Science
Volume32
Issue number5
DOIs
StatePublished - Aug 2021

Keywords

  • Codes
  • context-free languages
  • decision algorithms
  • marginal errors
  • regular languages
  • undecidability

Fingerprint

Dive into the research topics of 'Generalizations of Code Languages with Marginal Errors'. Together they form a unique fingerprint.

Cite this