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The NiuTrans Machine Translation Systems for WMT21 (2109.10485v1)
Published 22 Sep 2021 in cs.CL
Abstract: This paper describes NiuTrans neural machine translation systems of the WMT 2021 news translation tasks. We made submissions to 9 language directions, including English$\leftrightarrow$${$Chinese, Japanese, Russian, Icelandic$}$ and English$\rightarrow$Hausa tasks. Our primary systems are built on several effective variants of Transformer, e.g., Transformer-DLCL, ODE-Transformer. We also utilize back-translation, knowledge distillation, post-ensemble, and iterative fine-tuning techniques to enhance the model performance further.