phrase structure grammar

基本解釋

This paper illustrates the formalization model employed in Head-driven Phrase Structure Grammar.
簡要評述了中心語驅動短語結構語法所采用的語言理論形式化方法。
To implementation of efficient parsing of grammars, a new class of phrase structure grammars called overlap-free grammar(OFG) with heavily restricted rewriting rules is defined.
為了實現(xiàn)有效的文法解析，定義了一種生成規(guī)則受限的短語結構文法，稱為無重疊生成文法。
Idea of the algorithm is to induce three kinds of trees from lexicalized tree bank. Then the method of Head-driven Phrase Structure Grammar(HPSG) was applied to extract lexicalized tree from corpus.
該算法的主要思想是從詞匯化樹庫中歸納出三種類型的詞匯化樹，然后利用了中心詞驅動短語結構文法的方法從語料庫自動提取結構合理的詞匯化樹；

a grammar in which relations among the words and morphemes of a sentence are described, but not deeper or semantic relations ( abbr: PSG)&rarrcompare transformational grammar