Improving Neural Machine Translation by Bidirectional Training Liang Ding author Di Wu author Dacheng Tao 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 ding-etal-2021-improving 10.18653/v1/2021.emnlp-main.263 https://aclanthology.org/2021.emnlp-main.263/ 2021-11 3278 3284