An Analysis Method of Query Terms for Information Retrieval Based on Isolated Terms Filtrating

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An Analysis Method of Query Terms for Information Retrieval Based on Isolated Terms Filtrating

更新时间：2025-07-09

- An Analysis Method of Query Terms for Information Retrieval Based on Isolated Terms Filtrating
- Vol. 43, Issue 8, Pages: 6-10+63(2009)
- 作者机构：
  
  西安交通大学计算机科学与技术系,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP391
- Online First：10 August 2009，
  
  Published：2009
- 稿件说明：
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An Analysis Method of Query Terms for Information Retrieval Based on Isolated Terms Filtrating[J]. 2009, 43(8): 6-10+63.
DOI：

An Analysis Method of Query Terms for Information Retrieval Based on Isolated Terms Filtrating[J]. 2009, 43(8): 6-10+63. DOI：

摘要

针对传统查询词临近性(QTP)分析方法无法有效提高查准率的问题

提出了一种孤立项过滤的信息检索查询词分析方法.该方法根据词汇相似度较高的查询词对之间具有强可替代性这一事实

从查询词及其实例中分解出查询内的孤立项和文档内的孤立项

在分析查询词临近性之前预先进行孤立项过滤

使之不参与QTP统计量的计算

由此减小了过分强调临近性对查准率的影响.实验结果表明

对于词汇相似度差异比较显著的查询

进行孤立项过滤的查询词临近性分析方法的平均检索精确度比传统分析方法提高14%.

Abstract

To address the issue that most of traditional query term proximity(QTP)statistics are lack of effective precision improvement

an analysis method of query terms based on isolated terms filtrating is proposed. The method is based on the fact that the query terms with higher similarity have higher substitutability. Isolated terms in-queries and isolated terms in-documents are extracted from query terms and their instances. The filtrating of isolated terms is earlier than the analyzing of QTP

so that the isolated terms are ignored in the calculating of QTP statistics and that the impact of overemphasis of QTP on precision is reduced. Experimental results on queries with significantly different proximities show that the performance of the QTP with isolated terms filtrating is higher(about 14%)than that of the QTP without isolated terms filtrating is.

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references

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