Semi-supervised training on 17.55 hours of untranscribed Somali speech yields 7.74% relative WER reduction and 6.55% LM perplexity improvement over a 1.57-hour baseline using TDNN-F models and confidence filtering.
In comparison with our previous ASR system [9], the improve- ment afforded by TDNN-F is clear (rows 1 and 2)
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Improved low-resource Somali speech recognition by semi-supervised acoustic and language model training
Semi-supervised training on 17.55 hours of untranscribed Somali speech yields 7.74% relative WER reduction and 6.55% LM perplexity improvement over a 1.57-hour baseline using TDNN-F models and confidence filtering.