Neural Machine Translation of Rare Words with Subword Units Rico Sennrich author Barry Haddow author Alexandra Birch author 2016-08 text Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Katrin Erk editor Noah A Smith editor Association for Computational Linguistics Berlin, Germany conference publication sennrich-etal-2016-neural 10.18653/v1/P16-1162 https://aclanthology.org/P16-1162/ 2016-08 1715 1725