When Does Unsupervised Machine Translation Work? Kelly Marchisio author Kevin Duh author Philipp Koehn author 2020-11 text Proceedings of the Fifth Conference on Machine Translation Loïc Barrault editor Ondřej Bojar editor Fethi Bougares editor Rajen Chatterjee editor Marta R Costa-jussà editor Christian Federmann editor Mark Fishel editor Alexander Fraser editor Yvette Graham editor Paco Guzman editor Barry Haddow editor Matthias Huck editor Antonio Jimeno Yepes editor Philipp Koehn editor André Martins editor Makoto Morishita editor Christof Monz editor Masaaki Nagata editor Toshiaki Nakazawa editor Matteo Negri editor Association for Computational Linguistics Online conference publication marchisio-etal-2020-unsupervised 10.18653/v1/2020.wmt-1.68 https://aclanthology.org/2020.wmt-1.68/ 2020-11 571 583