Query expansion with terms selected using lexical cohesion analysis of documents
Author
Vechtomova, O.
Karamuftuoglu, M.
Date
2007-07Source Title
Information Processing and Management
Print ISSN
0306-4573
Publisher
Elsevier Ltd
Volume
43
Issue
4
Pages
849 - 865
Language
English
Type
ArticleItem Usage Stats
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We present new methods of query expansion using terms that form lexical cohesive links between the contexts of distinct query terms in documents (i.e., words surrounding the query terms in text). The link-forming terms (link-terms) and short snippets of text surrounding them are evaluated in both interactive and automatic query expansion (QE). We explore the effectiveness of snippets in providing context in interactive query expansion, compare query expansion from snippets vs. whole documents, and query expansion following snippet selection vs. full document relevance judgements. The evaluation, conducted on the HARD track data of TREC 2005, suggests that there are considerable advantages in using link-terms and their surrounding short text snippets in QE compared to terms selected from full-texts of documents. © 2006 Elsevier Ltd. All rights reserved.
Keywords
Interactive information retrievalLexical cohesion
Query expansion
Relevance feedback
Data reduction
Feedback
Interactive computer systems
Query languages
Text processing
Word processing