Title
Large scale weakly and semi-supervised learning for low-resource video ASR
Abstract
Many semi- and weakly-supervised approaches have been investigated for overcoming the labeling cost of building high quality speech recognition systems. On the challenging task of transcribing social media videos in low-resource conditions, we conduct a large scale systematic comparison between two self-labeling methods on one hand, and weakly-supervised pretraining using contextual metadata on the other. We investigate distillation methods at the frame level and the sequence level for hybrid, encoder-only CTC-based, and encoder-decoder speech recognition systems on Dutch and Romanian languages using 27,000 and 58,000 hours of unlabeled audio respectively. Although all approaches improved upon their respective baseline WERs by more than 8%, sequence-level distillation for encoder-decoder models provided the largest relative WER reduction of 20% compared to the strongest data-augmented supervised baseline.
Year
DOI
Venue
2020
10.21437/Interspeech.2020-1917
INTERSPEECH
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
10
Name
Order
Citations
PageRank
Singh Kritika100.34
Manohar Vimal200.34
Xiao Alex332.44
Sergey Edunov420410.37
Ross B. Girshick521921927.22
Vitaliy Liptchinsky683.16
Christian Fuegen796.58
Saraf Yatharth800.34
Geoffrey Zweig93406320.25
Abdel-rahman Mohamed103772266.13