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ZJU's IWSLT 2021 نظام ترجمة الكلام
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في هذه الورقة، وصفنا تقديم جامعة تشجيانغ إلى مهمة ترجمة الكلام متعددة اللغات IWSLT2021.تركز هذه المهمة على بحث ترجمة الكلام (ST) عبر العديد من لغات المصدر غير الإنجليزية.يمكن للمشاركين أن يقرروا ما إذا كانوا سيعملون على أنظمة مقيدة أو أنظمة غير مقيدة يمكنها استخدام البيانات الخارجية.نقوم بإنشاء أنظمة مقيدة للترجمة المتتالية والإنغانية في النهاية، باستخدام البيانات المقدمة فقط.في النهج المتتالي، نجمع بين التعرف على الكلام التلقائي في المطابقة (ASR) مع الترجمة الآلية العصبية القائمة على المحولات (NMT).تستخدم أنظمة الترجمة المباشرة المناسبة للكلام المباشرة في تشفير الأساس ومكتشف متعددة المهام.تم فركة الأنظمة المقدمة من قبل نماذج متتالية مختلفة.
In this paper, we describe Zhejiang University's submission to the IWSLT2021 Multilingual Speech Translation Task. This task focuses on speech translation (ST) research across many non-English source languages. Participants can decide whether to work on constrained systems or unconstrained systems which can using external data. We create both cascaded and end-to-end speech translation constrained systems, using the provided data only. In the cascaded approach, we combine Conformer-based automatic speech recognition (ASR) with the Transformer-based neural machine translation (NMT). Our end-to-end direct speech translation systems use ASR pretrained encoder and multi-task decoders. The submitted systems are ensembled by different cascaded models.
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This paper describes KIT'submission to the IWSLT 2021 Offline Speech Translation Task. We describe a system in both cascaded condition and end-to-end condition. In the cascaded condition, we investigated different end-to-end architectures for the spe
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st set. In this work, we study their efficiency from the perspective of having a large amount of separate ASR training data and MT training data, and a smaller amount of speech-translation training data. Large amounts of ASR and MT training data are utilized for pre-training the ASR and MT models. Speech-translation data is used to jointly optimize ASR-MT models by defining an end-to-end differentiable path from speech to translations. For this purpose, we use the internal continuous representations from the ASR-decoder as the input to MT module. We show that speech translation can be further improved by training the ASR-decoder jointly with the MT-module using large amount of text-only MT training data. We also show significant improvements by training an ASR module capable of generating punctuated text, rather than leaving the punctuation task to the MT module.
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