The NiuTrans System for the WMT20 Quality Estimation Shared Task Chi Hu author Hui Liu author Kai Feng author Chen Xu author Nuo Xu author Zefan Zhou author Shiqin Yan author Yingfeng Luo author Chenglong Wang author Xia Meng author Tong Xiao author Jingbo Zhu 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 hu-etal-2020-niutrans-system 10.18653/v1/2020.wmt-1.117 https://aclanthology.org/2020.wmt-1.117/ 2020-11 1018 1023