基于多语本体的语义查询扩展研究

摘要

查询扩展是改善信息检索结果的有效方法。针对用户获取多语言信息的需求以及当前跨语言信息检索存在的翻译歧异性问题，提出一种基于多语本体的语义查询扩展方法，介绍其基本原理、查询扩展模型及实现过程，使跨语言信息检索从字符匹配变成语义层面的匹配，实现跨语言信息检索中的查询扩展，以提高多语言信息检索的查全率和查准率。%Query expansion is an effective method to enhance information retrieval performance. Aiming at the requirements of acquiring multilingual information and solving the problems of semantic disambiguation of cross language information retrieval (CLIR), the article proposed a new semantic query expansion method based on multilingual ontology, and introduced its fundamentals, model and realization process, to turn character-matching into semantic matching for CLIR, implementing query expansion in CLIR, which may optimize system’s recal and precision.