Classification-Based Filtering of Semantic Relatedness in Hypernymy Extraction

Authors:
Maciej Piasecki;Stanisław Szpakowicz;Michał Marcińczuk;Bartosz Broda
Affiliations:
Institute of Applied Informatics, Wrocław University of Technology, Poland;School of Information Technology and Engineering, University of Ottawa, and Institute of Computer Science, Polish Academy of Sciences,;Institute of Applied Informatics, Wrocław University of Technology, Poland;Institute of Applied Informatics, Wrocław University of Technology, Poland
Venue:
GoTAL '08 Proceedings of the 6th international conference on Advances in Natural Language Processing
Year:
2008

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Abstract

Manual construction of a wordnet can be facilitated by a system that suggests semantic relations acquired from corpora. Such systems tend to produce many wrong suggestions. We propose a method of filtering a raw list of noun pairs potentially linked by hypernymy, and test it on Polish. The method aims for good recall and sufficient precision. The classifiers work with complex features that give clues on the relation between the nouns. We apply a corpus-based measure of semantic relatedness enhanced with a Rank Weight Function. The evaluation is based on the data in Polish WordNet. The results compare favourably with similar methods applied to English, despite the small size of Polish WordNet.