Existing document-level neural machine translation (NMT) models have sufficiently explored different context settings to provide guidance for target generation. However, little attention is paid to inaugurate more diverse context for abundant context information. In this paper, we propose a Selective Memory-augmented Neural Document Translation model to deal with documents containing large hypothesis space of the context. Specifically, we retrieve similar bilingual sentence pairs from the training corpus to augment global context and then extend the two-stream attention model with selective mechanism to capture local context and diverse global contexts. This unified approach allows our model to be trained elegantly on three publicly document-level machine translation datasets and significantly outperforms previous document-level NMT models.

本文提出了一种选择性存储增强神经文档翻译模型，通过从训练语料库中检索相似的双语句对来增强全局上下文信息，并扩展双流注意力模型以捕捉局部上下文和多样化的全局上下文，该统一方法使我们的模型可以优雅地在三个公开的文档级机器翻译数据集上训练，并显著优于以前的文档级NMT模型。

SMDT: 选择性记忆增强神经文档翻译