Using lexical chains for keyword extraction |
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Authors: | Gonenc Ercan Ilyas Cicekli |
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Institution: | aDepartment of Computer Engineering, Bilkent University, Bilkent 06800, Ankara, Turkey |
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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. |
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Keywords: | Keyword extraction Lexical chains Natural language processing Machine learning |
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