Keisuke Nishiguchi


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Predicting Antonyms in Context using BERT
Ayana Niwa | Keisuke Nishiguchi | Naoaki Okazaki
Proceedings of the 14th International Conference on Natural Language Generation

We address the task of antonym prediction in a context, which is a fill-in-the-blanks problem. This task setting is unique and practical because it requires contrastiveness to the other word and naturalness as a text in filling a blank. We propose methods for fine-tuning pre-trained masked language models (BERT) for context-aware antonym prediction. The experimental results demonstrate that these methods have positive impacts on the prediction of antonyms within a context. Moreover, human evaluation reveals that more than 85% of predictions using the proposed method are acceptable as antonyms.