Improving Pseudo-label Training For End-to-end Speech Recognition Using Gradient Mask

Shaoshi Ling; Chen Shen; Meng Cai; Zejun Ma

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arXiv · 2110.04056

Improving Pseudo-label Training For End-to-end Speech Recognition Using Gradient Mask

Shaoshi Ling·Chen Shen·Meng Cai·Zejun Ma

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Abstract

In the recent trend of semi-supervised speech recognition, both self-supervised representation learning and pseudo-labeling have shown promising results. In this paper, we propose a novel approach to combine their ideas for end-to-end speech recognition model. Without any extra loss function, we utilize the Gradient Mask to optimize the model when training on pseudo-label. This method forces the speech recognition model to predict from the masked input to learn strong acoustic representation and make training robust to label noise. In our semi-supervised experiments, the method can improve the model performance when training on pseudo-label and our method achieved competitive results comparing with other semi-supervised approaches on the Librispeech 100 hours experiments.

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BibTeX RIS

Shaoshi Ling, Chen Shen, Meng Cai, Zejun Ma. 2021-10-08. Improving Pseudo-label Training For End-to-end Speech Recognition Using Gradient Mask. https://arxiv.org/abs/2110.04056

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