IST-Unbabel Participation in the WMT20 Quality Estimation Shared Task João Moura author Miguel Vera author Daan van Stigt author Fabio Kepler author André F T Martins 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 moura-etal-2020-ist 10.18653/v1/2020.wmt-1.119 https://aclanthology.org/2020.wmt-1.119/ 2020-11 1029 1036