Wang, Jiancheng, Jingjing Wang, Changlong Sun, Shoushan Li, Xiaozhong Liu, Luo Si, Min Zhang, and Guodong Zhou. 2020. “Sentiment Classification in Customer Service Dialogue With Topic-Aware Multi-Task Learning”. Proceedings of the AAAI Conference on Artificial Intelligence 34 (05):9177-84. https://doi.org/10.1609/aaai.v34i05.6454.