Publication Details

On Normal Forms and Erasing Rules in Path-Controlled Grammars

KOUTNÝ, J.; MEDUNA, A. On Normal Forms and Erasing Rules in Path-Controlled Grammars. Schedae Informaticae, 2014, vol. 2013, no. 22, p. 9-18. ISSN: 0860-0295.
Czech title
O normálních formách a vymazávacích pravidlech gramatik řízených cestou
Type
journal article
Language
English
Authors
Koutný Jiří, Ing., Ph.D.
Meduna Alexandr, prof. RNDr., CSc. (DIFS)
URL
Keywords

context-free grammars, path controlled grammars, restricted derivation trees, paths, normal forms, erasing rules

Abstract

This paper discusses path controlled grammars-context-free grammars with a root-to-leaf path in their derivation trees restricted by a control language. First, it investigates the impact of erasing rules on the generative power of path controlled grammars. Then, it establishes two Chomsky-like normal forms for path controlled grammars-the first allows unit rules, the second allows just one erasing rule.

Published
2014
Pages
9–18
Journal
Schedae Informaticae, vol. 2013, no. 22, ISSN 0860-0295
DOI
10.4467/20838476SI.13.001.2086
EID Scopus
2-s2.0-85020891879
BibTeX 
@article{BUT111480,
  author="Jiří {Koutný} and Alexandr {Meduna}",
  title="On Normal Forms and Erasing Rules in Path-Controlled Grammars",
  journal="Schedae Informaticae",
  year="2014",
  volume="2013",
  number="22",
  pages="9--18",
  doi="10.4467/20838476SI.13.001.2086",
  issn="0860-0295",
  url="http://www.ejournals.eu/Schedae-Informaticae/Volume-22/art/2848/"
}
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