Vietnamese-English Translation with Transformer and Back Translation in VLSP 2020 Machine Translation Shared Task Le Duc Cuong author Trang Nguyen Thi Thu author 2020-12 text Proceedings of the 7th International Workshop on Vietnamese Language and Speech Processing Huyen T M Nguyen editor Xuan-Son Vu editor Chi Mai Luong editor Association for Computational Lingustics Hanoi, Vietnam conference publication cuong-thu-2020-vietnamese https://aclanthology.org/2020.vlsp-1.13/ 2020-12 64 70