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Pseudo-Labeling for Massively Multilingual Speech Recognition

2021-10-30 03:30:17
Loren Lugosch, Tatiana Likhomanenko, Gabriel Synnaeve, Ronan Collobert

Abstract

Semi-supervised learning through pseudo-labeling has become a staple of state-of-the-art monolingual speech recognition systems. In this work, we extend pseudo-labeling to massively multilingual speech recognition with 60 languages. We propose a simple pseudo-labeling recipe that works well even with low-resource languages: train a supervised multilingual model, fine-tune it with semi-supervised learning on a target language, generate pseudo-labels for that language, and train a final model using pseudo-labels for all languages, either from scratch or by fine-tuning. Experiments on the labeled Common Voice and unlabeled VoxPopuli datasets show that our recipe can yield a model with better performance for many languages that also transfers well to LibriSpeech.

Abstract (translated)

URL

https://arxiv.org/abs/2111.00161

PDF

https://arxiv.org/pdf/2111.00161.pdf


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