Difficulty-Aware Machine Translation Evaluation Runzhe Zhan author Xuebo Liu author Derek F Wong author Lidia S Chao author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 2: Short Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication zhan-etal-2021-difficulty 10.18653/v1/2021.acl-short.5 https://aclanthology.org/2021.acl-short.5/ 2021-08 26 32