接続制約を用いた音素文脈依存LRテーブルの生成

概要

論文の詳細を見る
The combination of phoneme context dependent(al1ophone) models and a GLR parser has been used to improve the recognition accuracy in continuous speech recognition systems. The GLR parser is guided by an LR parsing table automatically created from context-free grammar. We have proposed an algorithm to incorporate the phoneme-context-dependence into the LR table through constraints propagation. In this method, the generation of an allophone-based LR table is realized by two steps : From a set of syntactic, lexical and allophonic(CFG) rules, an initial LR table is constructed at first, and then, this initial LR table is modified on the basis of an allophone connection matrix. This method have the problem of explosion of initial LR table as the CFG rules increase. In order to rectify this problem, in this paper, we describe an approach to incorporate the connection constraints into the generation process of the LR table. Using this method, the explosion of the initial LR table size can be avoided, and the time for generating an allophone-based LR table decreased greatly.
一般社団法人情報処理学会の論文
1995-03-15