How One Word Can Make all the Difference - Using Subject Metadata for Automatic Query Expansion and Reformulation
How One Word Can Make all the Difference - Using Subject Metadata for Automatic Query Expansion and Reformulation
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一个词如何发挥全部作用 - 使用主题元数据进行自动查询扩展和重构
DOI：
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发表时间：
2005
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通讯作者：
V. Petras
中科院分区：
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作者：
V. Petras
查询增强与特定领域的元数据（同义词）进行了分析，单语和双语检索的GIRT社会科学收藏。我们描述了我们的技术，进入词汇模块，关联查询词与词库术语，并建议其用于单语以及双语检索。不同的加权和合并方案添加关键字查询以及翻译技术进行了说明。查询增强通常提高单语和双语检索的平均精度分数。我们仔细研究了单个查询，并讨论了查询增强（或双语检索中的替换）如何显著改变检索结果。逐个查询的分析可以更深入地了解策略的优势和劣势，并提醒人们注意，平均精度分数并不总是能说明问题的全部。
Query enhancement with domain-specific metadata (thesaurus terms) is analyzed for monolingual and bilingual retrieval on the GIRT social science collection. We describe our technique of Entry Vocabulary Modules, which associates query words with thesaurus terms and suggest its use for monolingual as well as bilingual retrieval. Different weighting and merging schemes for adding keywords to queries as well as translation techniques are described. Query enhancement generally improves average precision scores for both monolingual and bilingual retrieval. We take a closer look at individual queries and discuss how the query enhancements (or substitutions in bilingual retrieval) can change retrieval results quite dramatically. A query-by-query analysis provides deeper insight into strengths and weaknesses of strategies and serves as a cautionary reminder that average precision scores don’t always tell the whole story.