Papers › Joint Learning of Syntactic Features Helps Discourse Segmentation
Joint Learning of Syntactic Features Helps Discourse Segmentation
Takshak Desai, Parag Pravin Dakle, Dan Moldovan
This paper describes an accurate framework for carrying out multi-lingual discourse segmentation with BERT (Devlin et al., 2019). The model is trained to identify segments by casting the problem as a token classification problem and jointly learning syntactic features like part-of-speech tags and dependency relations. This leads to significant improvements in performance. Experiments are performed in different languages, such as English, Dutch, German, Portuguese Brazilian and Basque to highlight the cross-lingual effectiveness of the segmenter. In particular, the model achieves a state-of-the-art F-score of 96.7 for the RST-DT corpus (Carlson et al., 2003) improving on the previous best model by 7.2{\%}. Additionally, a qualitative explanation is provided for how proposed changes contribute to model performance by analyzing errors made on the test data.
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