Keyphrase Extraction: Enhancing Lists

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ConferenceProceedings of the Computational Linguistic in the North-East (CLINE'2004), August 30, 2004., Montréal, Québec, Canada
Subjectkeyphrase extraction; clustering; semantic similarity; corpus linguistics; keyphrase evaluation; regroupement; similitude sur le plan sémantique; linguistique du corpus; évaluation des points essentiels
AbstractThis paper proposes some modest improvements to Extractor, a state-of-the-art keyphrase extraction system, by using a terabyte-sized corpus to estimate the informativeness and semantic similarity of keyphrases. We present two techniques to improve the organization and remove outliers of lists of keyphrases. The first is a simple ordering according to their occurrences in the corpus; the second is clustering according to semantic similarity. Evaluation issues are discussed. We present a novel technique of comparing extracted keyphrases to a gold standard which relies on semantic similarity rather than string matching or an evaluation involving human judges.
Publication date
AffiliationNRC Institute for Information Technology; National Research Council Canada
Peer reviewedNo
NRC number48079
NPARC number5765134
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Record identifierbbdcb1d3-d36b-4f4f-9f56-2a613f0f4310
Record created2009-03-29
Record modified2016-05-09
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