arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.12681cs.CL
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基于Levenshtein Transformer的词汇约束神经机器翻译

Lexically Constrained Neural Machine Translation with Levenshtein Transformer

Rakuten Institute of Technology Singapore(新加坡乐天技术研究所);Rakuten, Inc.(乐天株式会社)

Raymond Hendy Susanto, Shamil Chollampatt, Liling Tan

摘要:

提出了一种简单有效的神经机器翻译词汇约束融合算法。以前的工作要么需要重新训练现有的模型与词汇的约束,或将它们合并在束搜索解码与显着更高的计算开销。利用最近提出的Levenshtein Transformer模型的灵活性和速度(Gu等人,2019),我们的方法在推理时注入术语约束,而不会对解码速度产生任何影响。我们的方法不需要对训练过程进行任何修改,并且可以在运行时使用自定义字典轻松应用。在英语-德语WMT数据集上的实验表明,我们的方法改进了无约束的基线和以前的方法。

英文摘要:

This paper proposes a simple and effective algorithm for incorporating lexical constraints in neural machine translation. Previous work either required re-training existing models with the lexical constraints or incorporating them during beam search decoding with significantly higher computational overheads. Leveraging the flexibility and speed of a recently proposed Levenshtein Transformer model (Gu et al., 2019), our method injects terminology constraints at inference time without any impact on decoding speed. Our method does not require any modification to the training procedure and can be easily applied at runtime with custom dictionaries. Experiments on English-German WMT datasets show that our approach improves an unconstrained baseline and previous approaches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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