PROMT Systems for WMT 2020 Shared News Translation Task

This paper describes the PROMT submissions for the WMT 2020 Shared News Translation Task. This year we participated in four language pairs and six directions: English-Russian, RussianEnglish, English-German, GermanEnglish, Polish-English and CzechEnglish. All our submissions are MarianNMT-based neural systems. We use more data compared to last year and update our back-translations with better models from the previous year. We show competitive results in terms of BLEU in most directions.

[1]  Lukasz Kaiser,et al.  Attention is All you Need , 2017, NIPS.

[2]  Timothy Baldwin,et al.  langid.py: An Off-the-shelf Language Identification Tool , 2012, ACL.

[3]  Philipp Koehn,et al.  Moses: Open Source Toolkit for Statistical Machine Translation , 2007, ACL.

[4]  Ciprian Chelba,et al.  Tagged Back-Translation , 2019, WMT.

[5]  Kenneth Heafield,et al.  Copied Monolingual Data Improves Low-Resource Neural Machine Translation , 2017, WMT.

[6]  Michel Simard,et al.  Statistical Phrase-Based Post-Editing , 2007, NAACL.

[7]  Salim Roukos,et al.  Bleu: a Method for Automatic Evaluation of Machine Translation , 2002, ACL.

[8]  Noah A. Smith,et al.  A Simple, Fast, and Effective Reparameterization of IBM Model 2 , 2013, NAACL.

[9]  Jörg Tiedemann,et al.  Parallel Data, Tools and Interfaces in OPUS , 2012, LREC.

[10]  Alexander Molchanov.  PROMT Systems for WMT 2019 Shared Translation Task , 2019, WMT.

[11]  Rico Sennrich,et al.  Improving Neural Machine Translation Models with Monolingual Data , 2015, ACL.

[12]  Marcis Pinnis,et al.  Neural Machine Translation for Morphologically Rich Languages with Improved Sub-word Units and Synthetic Data , 2017, TSD.

[13]  Alexander M. Fraser,et al.  Modeling Target-Side Inflection in Neural Machine Translation , 2017, WMT.

[14]  Alexander M. Rush,et al.  OpenNMT: Open-Source Toolkit for Neural Machine Translation , 2017, ACL.

[15]  André F. T. Martins,et al.  Marian: Fast Neural Machine Translation in C++ , 2018, ACL.

[16]  Rico Sennrich,et al.  Neural Machine Translation of Rare Words with Subword Units , 2015, ACL.

[17]  András Kornai,et al.  Parallel corpora for medium density languages , 2007 .