Probabilistic structured query methods
Probabilistic structured query methods
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概率结构化查询方法
DOI：
10.1145/860435.860497
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Douglas W. Oard
中科院分区：
文献类型：
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作者：
Kareem Darwish;Douglas W. Oard
用于查询项替换的结构化方法依赖于替换概率的项TES的单独估计。统计上有意义的频率和文档频率，以计算每个查询词语的权重。本文回顾了以前关于结构化查询技术的工作，并介绍了三个利用估计的新变体，当使用替换概率来估计词频和文档频率时，跨语言检索和基于光学字符识别的检索的检索效率都得到了改善。
Structured methods for query term replacement rely on separate estimates of term tes of replacement probabilities. Statistically significantfrequency and document frequency to compute a weight for each query term. This paper reviews prior work on structured query techniques and introduces three new variants that leverage estima improvements in retrieval effectiveness are demonstrated for cross-language retrieval and for retrieval based on optical character recognition when replacement probabilities are used to estimate both term frequency and document frequency.