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• W3155427814 abstract "End-to-end models have achieved impressive results on the task of automatic speech recognition (ASR). For low-resource ASR tasks, however, labeled data can hardly satisfy the demand of end-to-end models. Self-supervised acoustic pre-training has already shown its amazing ASR performance, while the transcription is still inadequate for language modeling in end-to-end models. In this work, we fuse a pre-trained acoustic encoder (wav2vec2.0) and a pre-trained linguistic encoder (BERT) into an end-to-end ASR model. The fused model only needs to learn the transfer from speech to language during fine-tuning on limited labeled data. The length of the two modalities is matched by a monotonic attention mechanism without additional parameters. Besides, a fully connected layer is introduced for the hidden mapping between modalities. We further propose a scheduled fine-tuning strategy to preserve and utilize the text context modeling ability of the pre-trained linguistic encoder. Experiments show our effective utilizing of pre-trained modules. Our model achieves better recognition performance on CALLHOME corpus (15 hours) than other end-to-end models." @default.
• W3155427814 created "2021-04-26" @default.
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• W3155427814 date "2021-01-01" @default.
• W3155427814 modified "2023-10-14" @default.
• W3155427814 title "Efficiently Fusing Pretrained Acoustic and Linguistic Encoders for Low-Resource Speech Recognition" @default.
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• W3155427814 doi "https://doi.org/10.1109/lsp.2021.3071668" @default.
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