Concept-based approach for information retrieval

作     者：吴晨 张全 贾宁 Wu Chen;Zhang Quan;Jia Ning

作者机构：中国科学院研究生院 

基　　金：The National Basic Research Program of China(973Program)(No.2004CB318104) the Knowledge Innovation Pro-gram of Chinese Academy of Sciences (No.13CX04) 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2006年第22卷第3期

页      码：324-329页

摘      要：A concept-based approach is expected to resolve the word sense ambiguities in information retrieval and apply the semantic importance of the concepts, instead of the term frequency, to representing the contents of a document. Consequently, a formalized document framework is proposed. The document framework is used to express the meaning of a document with the concepts which are expressed by high semantic importance. The framework consists of two parts： the ＂domain＂ information and the ＂situation ＆ background＂ information of a document. A document-extracting algorithm and a two-stage smoothing method are also proposed. The quantification of the similarity between the query and the document framework depends on the smoothing method. The experiments on the TREC6 collection demonstrate the feasibility and effectiveness of the proposed approach in information retrieval tasks. The average recall level precision of the model using the proposed approach is about 10% higher than that of traditional ones.

主 题 词：information retrieval concept semantic knowledge content representation 

学科分类：12[管理学] 1201[管理学-管理科学与工程类] 08[工学] 081201[081201] 0812[工学-测绘类] 

核心收录：

D　O　I：10.3969/j.issn.1003-7985.2006.03.008

馆 藏 号：203133174...