Aspect Sentiment Classification with Aspect-Specific Opinion Spans Lu Xu author Lidong Bing author Wei Lu author Fei Huang author 2020-11 text Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP) Bonnie Webber editor Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication xu-etal-2020-aspect 10.18653/v1/2020.emnlp-main.288 https://aclanthology.org/2020.emnlp-main.288/ 2020-11 3561 3567