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Phoneme-BERT: Joint Language Modelling of Phoneme Sequence and ASR Transcript

2021-02-01 12:45:15
Mukuntha Narayanan Sundararaman, Ayush Kumar, Jithendra Vepa

Abstract

Recent years have witnessed significant improvement in ASR systems to recognize spoken utterances. However, it is still a challenging task for noisy and out-of-domain data, where substitution and deletion errors are prevalent in the transcribed text. These errors significantly degrade the performance of downstream tasks. In this work, we propose a BERT-style language model, referred to as PhonemeBERT, that learns a joint language model with phoneme sequence and ASR transcript to learn phonetic-aware representations that are robust to ASR errors. We show that PhonemeBERT can be used on downstream tasks using phoneme sequences as additional features, and also in low-resource setup where we only have ASR-transcripts for the downstream tasks with no phoneme information available. We evaluate our approach extensively by generating noisy data for three benchmark datasets - Stanford Sentiment Treebank, TREC and ATIS for sentiment, question and intent classification tasks respectively. The results of the proposed approach beats the state-of-the-art baselines comprehensively on each dataset.

Abstract (translated)

URL

https://arxiv.org/abs/2102.00804

PDF

https://arxiv.org/pdf/2102.00804.pdf


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