Xianfeng Zeng
2021
WeChat Neural Machine Translation Systems for WMT21
Xianfeng Zeng
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Yijin Liu
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Ernan Li
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Qiu Ran
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Fandong Meng
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Peng Li
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Jinan Xu
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Jie Zhou
Proceedings of the Sixth Conference on Machine Translation
This paper introduces WeChat AI’s participation in WMT 2021 shared news translation task on English->Chinese, English->Japanese, Japanese->English and English->German. Our systems are based on the Transformer (Vaswani et al., 2017) with several novel and effective variants. In our experiments, we employ data filtering, large-scale synthetic data generation (i.e., back-translation, knowledge distillation, forward-translation, iterative in-domain knowledge transfer), advanced finetuning approaches, and boosted Self-BLEU based model ensemble. Our constrained systems achieve 36.9, 46.9, 27.8 and 31.3 case-sensitive BLEU scores on English->Chinese, English->Japanese, Japanese->English and English->German, respectively. The BLEU scores of English->Chinese, English->Japanese and Japanese->English are the highest among all submissions, and that of English->German is the highest among all constrained submissions.
2020
WeChat Neural Machine Translation Systems for WMT20
Fandong Meng
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Jianhao Yan
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Yijin Liu
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Yuan Gao
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Xianfeng Zeng
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Qinsong Zeng
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Peng Li
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Ming Chen
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Jie Zhou
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Sifan Liu
|
Hao Zhou
Proceedings of the Fifth Conference on Machine Translation
We participate in the WMT 2020 shared newstranslation task on Chinese→English. Our system is based on the Transformer (Vaswaniet al., 2017a) with effective variants and the DTMT (Meng and Zhang, 2019) architecture. In our experiments, we employ data selection, several synthetic data generation approaches (i.e., back-translation, knowledge distillation, and iterative in-domain knowledge transfer), advanced finetuning approaches and self-bleu based model ensemble. Our constrained Chinese→English system achieves 36.9 case-sensitive BLEU score, which is thehighest among all submissions.
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Co-authors
- Fandong Meng 2
- Yijin Liu 2
- Peng Li 2
- Jie Zhou 2
- Jianhao Yan 1
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Venues
- wmt2