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Improved Word Sense Disambiguation Using Pre-Trained Contextualized Word Representations

2019-10-01IJCNLP 2019Code Available0· sign in to hype

Christian Hadiwinoto, Hwee Tou Ng, Wee Chung Gan

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Abstract

Contextualized word representations are able to give different representations for the same word in different contexts, and they have been shown to be effective in downstream natural language processing tasks, such as question answering, named entity recognition, and sentiment analysis. However, evaluation on word sense disambiguation (WSD) in prior work shows that using contextualized word representations does not outperform the state-of-the-art approach that makes use of non-contextualized word embeddings. In this paper, we explore different strategies of integrating pre-trained contextualized word representations and our best strategy achieves accuracies exceeding the best prior published accuracies by significant margins on multiple benchmark WSD datasets. We make the source code available at https://github.com/nusnlp/contextemb-wsd.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
Supervised:BERT (linear projection)Senseval 275.5Unverified
Supervised:BERT (nearest neighbour)Senseval 273.8Unverified

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