Large-scale ASR Domain Adaptation using Self- and Semi-supervised Learning
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Self- and semi-supervised learning methods have been actively investigated to reduce labeled training data or enhance the model performance. However, the approach mostly focus on in-domain performance for public datasets. In this study, we utilize the combination of self- and semi-supervised learning methods to solve unseen domain adaptation problem in a large-scale production setting for online ASR model. This approach demonstrates that using the source domain data with a small fraction of the target domain data (3 performance gap compared to a full data baseline: relative 13.5 improvement for target domain data.
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