Minimally Supervised Learning of Affective Events Using Discourse Relations

Jun Saito; Yugo Murawaki; Sadao Kurohashi

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arXiv · 1909.00694

Minimally Supervised Learning of Affective Events Using Discourse Relations

Jun Saito·Yugo Murawaki·Sadao Kurohashi

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Abstract

Recognizing affective events that trigger positive or negative sentiment has a wide range of natural language processing applications but remains a challenging problem mainly because the polarity of an event is not necessarily predictable from its constituent words. In this paper, we propose to propagate affective polarity using discourse relations. Our method is simple and only requires a very small seed lexicon and a large raw corpus. Our experiments using Japanese data show that our method learns affective events effectively without manually labeled data. It also improves supervised learning results when labeled data are small.

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Jun Saito, Yugo Murawaki, Sadao Kurohashi. 2019-09-02. Minimally Supervised Learning of Affective Events Using Discourse Relations. https://arxiv.org/abs/1909.00694

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