Long-Short Term Masking Transformer: A Simple but Effective Baseline for Document-level Neural Machine Translation Pei Zhang author Boxing Chen author Niyu Ge author Kai Fan author 2020-11 text Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP) Bonnie Webber editor Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication zhang-etal-2020-long 10.18653/v1/2020.emnlp-main.81 https://aclanthology.org/2020.emnlp-main.81/ 2020-11 1081 1087