What Makes Word-level Neural Machine Translation Hard: A Case Study on English-German Translation Fabian Hirschmann author Jinseok Nam author Johannes Fürnkranz author 2016-12 text Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers Yuji Matsumoto editor Rashmi Prasad editor The COLING 2016 Organizing Committee Osaka, Japan conference publication hirschmann-etal-2016-makes https://aclanthology.org/C16-1301/ 2016-12 3199 3208