Unsupervised Neural Machine Translation with Future Rewarding Xiangpeng Wei author Yue Hu author Luxi Xing author Li Gao author 2019-11 text Proceedings of the 23rd Conference on Computational Natural Language Learning (CoNLL) Mohit Bansal editor Aline Villavicencio editor Association for Computational Linguistics Hong Kong, China conference publication wei-etal-2019-unsupervised 10.18653/v1/K19-1027 https://aclanthology.org/K19-1027/ 2019-11 281 290