CLASSIC: Continual and Contrastive Learning of Aspect Sentiment Classification Tasks Zixuan Ke author Bing Liu author Hu Xu author Lei Shu author 2021-11 text Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Online and Punta Cana, Dominican Republic conference publication ke-etal-2021-classic 10.18653/v1/2021.emnlp-main.550 https://aclanthology.org/2021.emnlp-main.550/ 2021-11 6871 6883