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YOSHIDA, Asahi; KATO, Yoshihide; MATSUBARA, Shigeki
IEICE Transactions on Information and Systems, 2024/01/01, 2024-1-1, 20240101, Volume: E107.D, Issue: 1Journal Article
Negation scope resolution is the process of detecting the negated part of a sentence. Unlike the syntax-based approach employed in previous researches, state-of-the-art methods performed better without the explicit use of syntactic structure. This work revisits the syntax-based approach and re-evaluates the effectiveness of syntactic structure in negation scope resolution. We replace the parser utilized in the prior works with state-of-the-art parsers and modify the syntax-based heuristic rules. The experimental results demonstrate that the simple modifications enhance the performance of the prior syntax-based method to the same level as state-of-the-art end-to-end neural-based methods.
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