语句级拼音┐汉字转换系统的设计与实现

DESIGN AND IMPLEMENTATION OF A PINYIN CHINESE CHARACTER CONVERSION SYSTEM

本文系统介绍了拼音－汉字转换系统的设计与实现方法．系统主要由拼音自动分词子系统和语法分析子系统两部分组成．拼音自动分词子系统是在书面汉语自动分词系统基础上根据音字转换的特点和要求建造的．语法分析子系统是由词法分析、短语分析和句法分析三部分组成，语法分析采取关键词驱动的自底向上分析策略．由于汉语句子的构造原则与词组一致，因此语法分析是以短语分析为主。

This paper describes the design and realization of a Pinyin Chinese character conversion software.The system is composed of two subsystems,the Pinyin automatic words segmentation subsystem and the grammatical analysis subsystem. The techniques of building a Pinyin automatic words segmentation subsystem is based on those of building automatic words segmentation system of written Chinese.Grammatical analysis of the subsystem consists of lexical analysis,phrasal analysis and syntactic analysis.Grammatical analysis is realized by using keyword driven bottom up.Phrasal analysis plays the most important part in grammatical analysis.The most important work in the grammatical analysis subsystem is to combine the phrases in different layers.