Revisiting Pivot-Based Paraphrase Generation: Language Is Not the Only Optional Pivot Yitao Cai author Yue Cao author Xiaojun Wan 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 cai-etal-2021-revisiting 10.18653/v1/2021.emnlp-main.350 https://aclanthology.org/2021.emnlp-main.350/ 2021-11 4255 4268