Lin Gui,Jiannan Hu,Yulan He,Ruifeng Xu,Qin Lu,and Jiachen Du.2017.A question answering approach for emotion cause extraction.In Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing,EMNLP,pages 1593-1602. Sophia Yat Mei Lee,Ying Chen,and Chu-Ren Huang.2010.A text-driven rule-based system for emotion cause detection.In Proceedings of the NAACL HLT 2010 Workshop on Computational Approaches to Analysis and Generation of Emotion in Text,pages 45-53.Association for Computational Linguistics. Xiangju Li,Kaisong Song,Shi Feng,Daling Wang,and Yifei Zhang.2018.A co-attention neural network model for emotion cause analysis with emotional context awareness.In Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing,EMNLP,pages 4752-4757. Xiangju Li,Shi Feng,Daling Wang,and Yifei Zhang.2019.Context-aware emotion cause analysis with multi- attention-based neural network.Knowl.-Based Syst..174:205-218. Thang Luong,Hieu Pham,and Christopher D.Manning.2015.Effective approaches to attention-based neu- ral machine translation.In Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing,EMNLP 2015,pages 1412-1421.The Association for Computational Linguistics. Tomas Mikolov,Ilya Sutskever,Kai Chen,Gregory S.Corrado,and Jeffrey Dean.2013.Distributed representa- tions of words and phrases and their compositionality.In Advances in Neural Information Processing Systems, pages3111-3119. Ashish Vaswani,Noam Shazeer,Niki Parmar,Jakob Uszkoreit,Llion Jones,Aidan N.Gomez,Lukasz Kaiser, and Illia Polosukhin.2017.Attention is all you need.In Isabelle Guyon,Ulrike von Luxburg,Samy Bengio, Hanna M.Wallach,Rob Fergus,S.V.N.Vishwanathan,and Roman Garnett,editors,Advances in Neural Information Processing Systems 30:Annual Conference on Neural Information Processing Systems 2017,pages 5998-6008. Rui Xia and Zixiang Ding.2019.Emotion-cause pair extraction:A new task to emotion analysis in texts.In Proceedings of the 57th Conference of the Association for Computational Linguistics,pages 1003-1012. Rui Xia,Mengran Zhang,and Zixiang Ding.2019.RTHN:A mn-transformer hierarchical network for emotion cause extraction.In Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, pages5285-5291. Xinyi Yu,Wenge Rong,Zhuo Zhang.Yuanxin Ouyang,and Zhang Xiong.2019.Multiple level hierarchical network-based clause selection for emotion cause extraction.IEEE Access,7:9071-9079. 149149 Lin Gui, Jiannan Hu, Yulan He, Ruifeng Xu, Qin Lu, and Jiachen Du. 2017. A question answering approach for emotion cause extraction. In Proceedings of the 2017 Conference on Empirical Methods in Natural Language Processing, EMNLP, pages 1593–1602. Sophia Yat Mei Lee, Ying Chen, and Chu-Ren Huang. 2010. A text-driven rule-based system for emotion cause detection. In Proceedings of the NAACL HLT 2010 Workshop on Computational Approaches to Analysis and Generation of Emotion in Text, pages 45–53. Association for Computational Linguistics. Xiangju Li, Kaisong Song, Shi Feng, Daling Wang, and Yifei Zhang. 2018. A co-attention neural network model for emotion cause analysis with emotional context awareness. In Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing, EMNLP, pages 4752–4757. Xiangju Li, Shi Feng, Daling Wang, and Yifei Zhang. 2019. Context-aware emotion cause analysis with multi￾attention-based neural network. Knowl.-Based Syst., 174:205–218. Thang Luong, Hieu Pham, and Christopher D. Manning. 2015. Effective approaches to attention-based neu￾ral machine translation. In Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing, EMNLP 2015, pages 1412–1421. The Association for Computational Linguistics. Tomas Mikolov, Ilya Sutskever, Kai Chen, Gregory S. Corrado, and Jeffrey Dean. 2013. Distributed representa￾tions of words and phrases and their compositionality. In Advances in Neural Information Processing Systems, pages 3111–3119. Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit, Llion Jones, Aidan N. Gomez, Lukasz Kaiser, and Illia Polosukhin. 2017. Attention is all you need. In Isabelle Guyon, Ulrike von Luxburg, Samy Bengio, Hanna M. Wallach, Rob Fergus, S. V. N. Vishwanathan, and Roman Garnett, editors, Advances in Neural Information Processing Systems 30: Annual Conference on Neural Information Processing Systems 2017, pages 5998–6008. Rui Xia and Zixiang Ding. 2019. Emotion-cause pair extraction: A new task to emotion analysis in texts. In Proceedings of the 57th Conference of the Association for Computational Linguistics, pages 1003–1012. Rui Xia, Mengran Zhang, and Zixiang Ding. 2019. RTHN: A rnn-transformer hierarchical network for emotion cause extraction. In Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, pages 5285–5291. Xinyi Yu, Wenge Rong, Zhuo Zhang, Yuanxin Ouyang, and Zhang Xiong. 2019. Multiple level hierarchical network-based clause selection for emotion cause extraction. IEEE Access, 7:9071–9079