Advances in joint CTC-attention based end-to-end speech recognition with a deep CNN encoder and RNN-LM

Takaaki Hori; Shinji Watanabe; Yu Zhang; William Chan

doi:10.21437/Interspeech.2017-1296

Advances in joint CTC-attention based end-to-end speech recognition with a deep CNN encoder and RNN-LM

Takaaki Hori, Shinji Watanabe, Yu Zhang, William Chan

Research output: Contribution to journal › Conference article › peer-review

120 Citations (Scopus)

Abstract

We present a state-of-the-art end-to-end Automatic Speech Recognition (ASR) model. We learn to listen and write characters with a joint Connectionist Temporal Classification (CTC) and attention-based encoder-decoder network. The encoder is a deep Convolutional Neural Network (CNN) based on the VGG network. The CTC network sits on top of the encoder and is jointly trained with the attention-based decoder. During the beam search process, we combine the CTC predictions, the attention-based decoder predictions and a separately trained LSTM language model. We achieve a 5-10% error reduction compared to prior systems on spontaneous Japanese and Chinese speech, and our end-to-end model beats out traditional hybrid ASR systems.

Original language	English
Pages (from-to)	949-953
Number of pages	5
Journal	Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
Volume	2017-August
DOIs	https://doi.org/10.21437/Interspeech.2017-1296
Publication status	Published - 2017
Externally published	Yes
Event	18th Annual Conference of the International Speech Communication Association, INTERSPEECH 2017 - Stockholm, Sweden Duration: 2017 Aug 20 → 2017 Aug 24

Keywords

Attention model
Connectionist temporal classification
Encoder-decoder
End-to-end speech recognition

ASJC Scopus subject areas

Language and Linguistics
Human-Computer Interaction
Signal Processing
Software
Modelling and Simulation

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10.21437/Interspeech.2017-1296

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Advances in joint CTC-attention based end-to-end speech recognition with a deep CNN encoder and RNN-LM. / Hori, Takaaki; Watanabe, Shinji; Zhang, Yu; Chan, William.

In: Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH, Vol. 2017-August, 2017, p. 949-953.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "We present a state-of-the-art end-to-end Automatic Speech Recognition (ASR) model. We learn to listen and write characters with a joint Connectionist Temporal Classification (CTC) and attention-based encoder-decoder network. The encoder is a deep Convolutional Neural Network (CNN) based on the VGG network. The CTC network sits on top of the encoder and is jointly trained with the attention-based decoder. During the beam search process, we combine the CTC predictions, the attention-based decoder predictions and a separately trained LSTM language model. We achieve a 5-10% error reduction compared to prior systems on spontaneous Japanese and Chinese speech, and our end-to-end model beats out traditional hybrid ASR systems.",

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author = "Takaaki Hori and Shinji Watanabe and Yu Zhang and William Chan",

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AU - Zhang, Yu

AU - Chan, William

PY - 2017

Y1 - 2017

N2 - We present a state-of-the-art end-to-end Automatic Speech Recognition (ASR) model. We learn to listen and write characters with a joint Connectionist Temporal Classification (CTC) and attention-based encoder-decoder network. The encoder is a deep Convolutional Neural Network (CNN) based on the VGG network. The CTC network sits on top of the encoder and is jointly trained with the attention-based decoder. During the beam search process, we combine the CTC predictions, the attention-based decoder predictions and a separately trained LSTM language model. We achieve a 5-10% error reduction compared to prior systems on spontaneous Japanese and Chinese speech, and our end-to-end model beats out traditional hybrid ASR systems.

AB - We present a state-of-the-art end-to-end Automatic Speech Recognition (ASR) model. We learn to listen and write characters with a joint Connectionist Temporal Classification (CTC) and attention-based encoder-decoder network. The encoder is a deep Convolutional Neural Network (CNN) based on the VGG network. The CTC network sits on top of the encoder and is jointly trained with the attention-based decoder. During the beam search process, we combine the CTC predictions, the attention-based decoder predictions and a separately trained LSTM language model. We achieve a 5-10% error reduction compared to prior systems on spontaneous Japanese and Chinese speech, and our end-to-end model beats out traditional hybrid ASR systems.

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KW - Connectionist temporal classification

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JO - Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH

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Advances in joint CTC-attention based end-to-end speech recognition with a deep CNN encoder and RNN-LM

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Keywords

ASJC Scopus subject areas

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