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Word Sense Disambiguation

Word Sense Disambiguation
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Author(s): Pushpak Bhattacharyya (Indian Institute of Technology Bombay, India)and Mitesh Khapra (Indian Institute of Technology Bombay, India)
Copyright: 2013
Pages: 30
Source title: Emerging Applications of Natural Language Processing: Concepts and New Research
Source Author(s)/Editor(s): Sivaji Bandyopadhyay (Jadavpur University, India), Sudip Kumar Naskar (Dublin City University, Ireland)and Asif Ekbal (Indian Institute of Technology Patna, India)
DOI: 10.4018/978-1-4666-2169-5.ch002

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Abstract

This chapter discusses the basic concepts of Word Sense Disambiguation (WSD) and the approaches to solving this problem. Both general purpose WSD and domain specific WSD are presented. The first part of the discussion focuses on existing approaches for WSD, including knowledge-based, supervised, semi-supervised, unsupervised, hybrid, and bilingual approaches. The accuracy value for general purpose WSD as the current state of affairs seems to be pegged at around 65%. This has motivated investigations into domain specific WSD, which is the current trend in the field. In the latter part of the chapter, we present a greedy neural network inspired algorithm for domain specific WSD and compare its performance with other state-of-the-art algorithms for WSD. Our experiments suggest that for domain-specific WSD, simply selecting the most frequent sense of a word does as well as any state-of-the-art algorithm.

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