probatilistic context free language 【计】 概率上下文无关语言 context free grammars inference 【计】 上下文无关文法推断 相似单词 context free 上下文无关 context n. [C,U] 1.【语】上下文;文章脉络 2.(事件的)来龙去脉,背景 grammar n. 1.[U] 语法,文法 2.[U](人的)语言知识及运用能力...
An intuitive definition of a context free grammar is a grammar that can be entirely expressed in BNF. 与上下文无关的语法的直观定义就是可以完全用 BNF 格式表达的语法。 ParaCrawl Corpus It is called a context free grammar . 这称为与上下文无关的语法。 ParaCrawl Corpus Create a Flexible...
Aprobabilisticcontext-freegrammar(orPCFG)isacontext-freegrammarthatassociatesaprobabilitywitheachofitsproductions. probabilisticcontext-freegrammar(或者说是PCFG)是一种上下文无关语法,它将其每一个产品关联到一个概率。 www.ibm.com 4. Goesforthejusticefor themajorityofcontext-freegrammarof thelanguagetodescribe...
Context-Free LanguageMost compilers and interpreters contain a component called a parser that extracts the meaning of a program prior to generating the compiled code or performing the interpreted execution.Context-Free GrammerFollowing is an example of a context-free grammar, which we call G1G1,...
Completeness of context-free grammar forms - Maurer, Salomaa, et al. - 1981 () Citation Context ...ports of the right sides of the equations are included in the set Σ+ ∪Σm1Y Σm2Y Σm3 , with Y being the alphabet of variables. The proof of Theorem 12 is given in [14], the ...
context-free grammar 英 [ˈkɒntekst friː ˈɡræmə(r)] 美 [ˈkɑːntekst friː ˈɡræmər]上下文无关语法
context-free grammar (redirected fromContext free grammar) context-free grammar [′kän‚tekst ‚frē ′gram·ər] (computer science) A grammar in which any occurrence of a metavariable may be replaced by one of its alternatives.
A Context-Free Grammar for English Left-Most Derivations e.g. Properties of CFGs(CFGs的性质) An Example of Ambiguity A Brief Overview of English Syntax Parts of Speech (tags from the Brown corpus) A Fragment of A noun Phrase Grammar ...
A context-free grammar provides a simple and mathematically precise mechanism for describing the methods by which phrases in some natural language are built from smaller blocks, capturing the "block structure" of sentences in a natural way. Its simplicity makes the formalism amenable to rigorous math...
This chapter is devoted to a discussion on basic properties of context-free lan-guages, especially those properties, which arise out of the analysis of context-freegrammars.Letusemphasizethatananalysisofcontext-freegrammarsiswellestab-lished,giventheirpracticalrelevance.3.1 Context-freegrammars–basics...