Dempster-Shafer Theory for a Query-Biased Combination of Evidence on the Web

VASSILIS PLACHOURAS; IADH OUNIS

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Dempster-Shafer Theory for a Query-Biased Combination of Evidence on the Web

机译：Web上基于查询的证据组合的Dempster-Shafer理论

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This paper reports on a large-scale experiment for the evaluation of a formal query-biased combination of evidence mechanism. We use the Dempster-Shafer theory of evidence to combine optimally results obtained by content and link analyses on the Web. The query-biased mechanism is based on the query scope, a measure of the query specificity. The query scope is defined using a probabilistic propagation mechanism on top of the hierarchical structure of concepts provided by WordNet. We use two standard Web test collections and two different link analysis approaches. The results show that the proposed approach could improve the retrieval effectiveness.

机译：本文报告了一项大规模实验，用于评估形式查询有偏见的证据机制组合。我们使用证据的Dempster-Shafer理论来组合通过内容和链接分析在Web上获得的最佳结果。偏向查询的机制基于查询范围，即查询特异性的度量。在WordNet提供的概念的层次结构之上，使用概率传播机制定义查询范围。我们使用两个标准的Web测试集合和两种不同的链接分析方法。结果表明，该方法可以提高检索效率。

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来源
《Information retrieval》 |2005年第2期|p.197-218|共22页
作者
VASSILIS PLACHOURAS; IADH OUNIS;
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作者单位

University of Glasgow, Glasgow G12 8QQ, UK;

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原文格式 PDF
正文语种 eng
中图分类图书馆学、图书馆事业;
关键词
combination of content and link analysis; query-biased combination of evidence; dempster-shafer theory of evidence; web information retrieval; query scope;

机译：内容和链接分析的组合;偏向证据的查询组合;Dempster-shafer证据理论;Web信息检索;查询范围;

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Dempster-Shafer Theory for a Query-Biased Combination of Evidence on the Web

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