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  • Kromě derivačních a komunikačních kroků dvousměrný PC gramatický systém vykonává také krok redukční, během kterého se nahrazuje pravá strana bezkontextového pravidla stranou levou. Článek dokazuje, že každý neunární rekurzivně spočetný jazyk může být popsán úsporným způsobem centralizovaným dvousměrným PC gramatickým systémem, Γ, s třemi komponentami. Přičemž hlavní komponenta obsahuje pouze tři nontermilány a jediné pravidlo obsahující komunikační symbol. Dále Γ během každého výpočttu provede jediný komunikační krok a všechny větné formy obsahují maximálně dva výskyty nonterminálních symbolů. Na závěr článku jsou diskutovány některé varianty těchto systémů. (cs)
  • Besides derivation and communication steps, a two-way PC grammar system can make a reduction step during which it reduces the right-hand side of a context-free production to its left hand-side. This paper proves that every non-unary recursively enumerable language is defined by a centralized two-way grammar system, Γ, with three components in a very economical way. Indeed, Γ's master has only three nonterminals and one communication production; furthermore, it produces all sententiall forms with no more than two occurrences of nonterminals. In addition, during every computation, Γ makes a single communication step. Some variants of two-way PC grammar system are discussed in the conclusion of this paper.
  • Besides derivation and communication steps, a two-way PC grammar system can make a reduction step during which it reduces the right-hand side of a context-free production to its left hand-side. This paper proves that every non-unary recursively enumerable language is defined by a centralized two-way grammar system, Γ, with three components in a very economical way. Indeed, Γ's master has only three nonterminals and one communication production; furthermore, it produces all sententiall forms with no more than two occurrences of nonterminals. In addition, during every computation, Γ makes a single communication step. Some variants of two-way PC grammar system are discussed in the conclusion of this paper. (en)
Title
  • Dvousměrné PC gramatické systémy složené z regulárních gramatik (cs)
  • Two-way PC Grammar Systems Based on Regular Grammars
  • Two-way PC Grammar Systems Based on Regular Grammars (en)
skos:prefLabel
  • Dvousměrné PC gramatické systémy složené z regulárních gramatik (cs)
  • Two-way PC Grammar Systems Based on Regular Grammars
  • Two-way PC Grammar Systems Based on Regular Grammars (en)
skos:notation
  • RIV/00216305:26230/04:PU49091!RIV/2005/GA0/262305/N
http://linked.open.../vavai/riv/strany
  • 111-118
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA201/04/0441)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 591083
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26230/04:PU49091
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Context-free grammar, left-linear grammar, right-linear grammar, grammar system, communication step, two-way PC grammar systems, derivation, production, sentential form, nonterminal, terminal (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [EC0780F001E7]
http://linked.open...v/mistoKonaniAkce
  • Rožnov pod Radhošťem
http://linked.open...i/riv/mistoVydani
  • Ostrava
http://linked.open...i/riv/nazevZdroje
  • Proceedings of 7th International Conference ISIM'04 Information Systems Implementation and Modeling
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Kaláb, Petr
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Neuveden
https://schema.org/isbn
  • 80-85988-99-2
http://localhost/t...ganizacniJednotka
  • 26230
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