机器翻译(Machine Translation)涵盖计算语言学和语言工程的所有分支,包含多语言方面。特色论文涵盖理论,描述或计算方面的任何下列主题:双语和多语语料库的编写和使用,计算机辅助语言教学,非罗马字符集的计算含义,连接主义翻译方法,对比语言学等。 官网地址:http://dblp.uni-trier.de/db/journals/mt/

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Existing multilingual machine translation approaches mainly focus on English-centric directions, while the non-English directions still lag behind. In this work, we aim to build a many-to-many translation system with an emphasis on the quality of non-English language directions. Our intuition is based on the hypothesis that a universal cross-language representation leads to better multilingual translation performance. To this end, we propose mRASP2, a training method to obtain a single unified multilingual translation model. mRASP2 is empowered by two techniques: a) a contrastive learning scheme to close the gap among representations of different languages, and b) data augmentation on both multiple parallel and monolingual data to further align token representations. For English-centric directions, mRASP2 outperforms existing best unified model and achieves competitive or even better performance than the pre-trained and fine-tuned model mBART on tens of WMT's translation directions. For non-English directions, mRASP2 achieves an improvement of average 10+ BLEU compared with the multilingual Transformer baseline. Code, data and trained models are available at https://github.com/PANXiao1994/mRASP2.

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