一　引言中文文本自动切词是中文信息处理的一项重要的基础性工作。中文信息处理的很多项目中都涉及到切词问题 ,如汉外机器翻译、中文文献自动标引、自动分类、中文文献库全文检索等 ,因此解决中文文本自动切词问题具有十分重要的理论意义和应用价值。歧义字段切分和专有名词 I. INTRODUCTION Automatic Chinese word segmentation is an important basic work in Chinese information processing. Many items of Chinese information processing involve the problem of word segmentation, such as machine translation outside Chinese, automatic indexing of Chinese documents, automatic classification and full-text search of Chinese document databases. Therefore, it is of great theoretical significance to solve the problem of automatic word segmentation in Chinese texts And application value. Ambiguous field segmentation and proper nouns