Petr Gebauer
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2021
CUNI Systems in WMT21: Revisiting Backtranslation Techniques for English-Czech NMT
Petr Gebauer
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Ondřej Bojar
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Vojtěch Švandelík
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Martin Popel
Proceedings of the Sixth Conference on Machine Translation
We describe our two NMT systems submitted to the WMT2021 shared task in English-Czech news translation: CUNI-DocTransformer (document-level CUBBITT) and CUNI-Marian-Baselines. We improve the former with a better sentence-segmentation pre-processing and a post-processing for fixing errors in numbers and units. We use the latter for experiments with various backtranslation techniques.