The NiuTrans End-to-End Speech Translation System for IWSLT 2021 Offline Task Chen Xu author Xiaoqian Liu author Xiaowen Liu author Tiger Wang author Canan Huang author Tong Xiao author Jingbo Zhu author 2021-08 text Proceedings of the 18th International Conference on Spoken Language Translation (IWSLT 2021) Marcello Federico editor Alex Waibel editor Marta R Costa-jussà editor Jan Niehues editor Sebastian Stuker editor Elizabeth Salesky editor Association for Computational Linguistics Bangkok, Thailand (online) conference publication xu-etal-2021-niutrans 10.18653/v1/2021.iwslt-1.9 https://aclanthology.org/2021.iwslt-1.9/ 2021-08 92 99