EDITOR: An Edit-Based Transformer with Repositioning for Neural Machine Translation with Soft Lexical Constraints Weijia Xu author Marine Carpuat author 2021 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal xu-carpuat-2021-editor 10.1162/tacl_a_00368 https://aclanthology.org/2021.tacl-1.19/ 2021 9 311 328