Using lexical chains for keyword extraction
Date
2007-11Source Title
Information Processing and Management
Print ISSN
0306-4573
Publisher
Elsevier Ltd
Volume
43
Issue
6
Pages
1705 - 1714
Language
English
Type
ArticleItem Usage Stats
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Abstract
Keywords can be considered as condensed versions of documents and short forms of their summaries. In this paper, the problem of automatic extraction of keywords from documents is treated as a supervised learning task. A lexical chain holds a set of semantically related words of a text and it can be said that a lexical chain represents the semantic content of a portion of the text. Although lexical chains have been extensively used in text summarization, their usage for keyword extraction problem has not been fully investigated. In this paper, a keyword extraction technique that uses lexical chains is described, and encouraging results are obtained. © 2007 Elsevier Ltd. All rights reserved.
Keywords
Keyword extractionLexical chains
Machine learning
Natural language processing
Classification (of information)
Learning systems
Natural language processing systems
Semantics
Text processing