Eliminating Sentiment Bias for Aspect-Level Sentiment Classification with Unsupervised Opinion Extraction Bo Wang author Tao Shen author Guodong Long author Tianyi Zhou author Yi Chang author 2021-11 text Findings of the Association for Computational Linguistics: EMNLP 2021 Marie-Francine Moens editor Xuanjing Huang editor Lucia Specia editor Scott Wen-tau Yih editor Association for Computational Linguistics Punta Cana, Dominican Republic conference publication wang-etal-2021-eliminating-sentiment 10.18653/v1/2021.findings-emnlp.258 https://aclanthology.org/2021.findings-emnlp.258/ 2021-11 3002 3012