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OALib Journal期刊
ISSN: 2333-9721
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一种基于语义词典的局部查询扩展方法
DOI: 10.13232/j.cnki.jnju.2014.04.017
Keywords: 查询扩展,语义词典,共现分析,语义相似度
Abstract:
？针对基于关键词匹配的搜索引擎存在的问题，提出一种基于语义词典的局部查询扩展方法，首先利用共现分析法和语义相似度选取扩展词，再对原始查询词和扩展词加权，最后计算文档相似度从而获得排序后的扩展查询结果。该方法克服了其它局部扩展方法将大量无关词加入查询的问题。实验表明，该方法有效地提高了查询结果的查准率。
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