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The University of Edinburgh's Submission to the IWSLT21 Simultaneous Translation Task

تقرير جامعة إدنبرة إلى مهمة الترجمة المتزامنة IWSLT21

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 Publication date 2021
and research's language is English
 Created by Shamra Editor




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We describe our submission to the IWSLT 2021 shared task on simultaneous text-to-text English-German translation. Our system is based on the re-translation approach where the agent re-translates the whole source prefix each time it receives a new source token. This approach has the advantage of being able to use a standard neural machine translation (NMT) inference engine with beam search, however, there is a risk that incompatibility between successive re-translations will degrade the output. To improve the quality of the translations, we experiment with various approaches: we use a fixed size wait at the beginning of the sentence, we use a language model score to detect translatable units, and we apply dynamic masking to determine when the translation is unstable. We find that a combination of dynamic masking and language model score obtains the best latency-quality trade-off.



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