context-free language

context-free language
контекстно-свободный язык
ЯВУ, синтаксис которого описывается контекстно-свободной грамматикой (см. context-free grammar)

Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. . 1998-2007.

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Смотреть что такое "context-free language" в других словарях:

  • Context-free language — In formal language theory, a context free language is a language generated by some context free grammar. The set of all context free languages is identical to the set of languages accepted by pushdown automata. Contents 1 Examples 2 Closure… …   Wikipedia

  • Deterministic context-free language — A deterministic context free language is a formal language which is defined by a deterministic context free grammar.[1] The set of deterministic context free languages is called DCFL[2] and is identical to the set of languages accepted by a… …   Wikipedia

  • Context-sensitive language — In theoretical computer science, a context sensitive language is a formal language that can be defined by a context sensitive grammar. That is one of the four types of grammars in the Chomsky hierarchy. Of the four, this is the least often used,… …   Wikipedia

  • Context free — may refer to: Concepts context free grammar deterministic context free grammar stochastic context free grammar weighted context free grammar context free language Software Context Free, a computer language for context free grammars …   Wikipedia

  • Context-free grammar — In formal language theory, a context free grammar (CFG) is a formal grammar in which every production rule is of the form V → w where V is a single nonterminal symbol, and w is a string of terminals and/or nonterminals (w can be empty). The… …   Wikipedia

  • context-free — adjective a) (Of a grammar) which generates sentences in stages, in such a way that at any intermediate stage, any piece of the sentence is enough to determine the corresponding piece at the next stage; that is, the stagewise transformation at a… …   Wiktionary

  • Pumping lemma for context-free languages — The pumping lemma for context free languages, also known as the Bar Hillel lemma, is a lemma that gives a property that all context free languages have. Its primary use is to prove a language is not context free.The pumping lemma for context free …   Wikipedia

  • Deterministic context-free grammar — In formal grammar theory, the deterministic context free grammars (DCFGs) are a proper subset of the context free grammars. The deterministic context free grammars are those a deterministic pushdown automaton can recognize. A DCFG is the finite… …   Wikipedia

  • context-free — adjective Date: 1964 of, relating to, or being a grammar or language based on rules that describe a change in a string without reference to elements outside of the string; also being such a rule …   New Collegiate Dictionary

  • context-free — ˈ ̷ ̷ ˌ ̷ ̷ ¦ ̷ ̷ adjective : of, relating to, or being a grammar or language based on rules that describe a change in a string without reference to elements outside of the string ; also : being such a rule …   Useful english dictionary

  • Mildly context-sensitive language — In formal grammar theory, mildly context sensitive languages are a class of formal languages which can be efficiently parsed, but still possess enough context sensitivity to allow the parsing of natural languages. The concept was first introduced …   Wikipedia


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