计算机工程Issue(10)：25-31,7.DOI:10.3969/j.issn.1000-3428.2014.10.006
基于扩展查询表达式的XML关键字查询
XML Keyword Search Based on Extended Query Expression
摘要
Abstract
Most existing eXtensible Markup Language ( XML ) keyword searches are based on Lowest Common Ancestor( LCA) semantics tree to generate search result,but they do not consider the data which is not included in LCA semantics tree while is relevant with user search intention. To solve this problem,an XML keyword query method based on extended query expression is proposed. The query expansion statistical model is based on user query log. Through analyzing query log and combined with optimal retrieval concept,it can judge whether the query expression should be expanded. After that,an XML TF-IDF method is employed to calculate the weight of candidate attribute. According to the context information and using cluster method,it gets the query expression keywords which are most relevant with search intention. Then the expanded query expression is generated. Compared with XSeek and semantics dictionary based query expression method,experimental result shows this method can improve the query quality by average 7% and 17% in F-measure respectively.关键词
信息检索/可扩展标示语言/最小公共祖先语义/查询/查询扩展/上下文信息Key words
information retrieval/eXtensive Markup Language( XML)/Lowest Common Ancestor( LCA) semantic/keyword search/query expansion/context information分类
信息技术与安全科学引用本文复制引用
朱菁华,王晓玲..基于扩展查询表达式的XML关键字查询[J].计算机工程,2014,(10):25-31,7.基金项目
国家自然科学基金资助项目(60773075)。 （60773075）
