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- W4297206661 abstract "Although automatic speech recognition (ASR) task has gained remarkable success by sequence-to-sequence models, there are two main mismatches between its training and testing that might lead to performance degradation: 1) The typically used cross-entropy criterion aims to maximize log-likelihood of the training data, while the performance is evaluated by word error rate (WER), not log-likelihood; 2) The teacher-forcing method leads to the dependence on ground truth during training, which means that model has never been exposed to its own prediction before testing. In this paper, we propose an optimization method called self-critical sequence training (SCST) to make the training procedure much closer to the testing phase. As a reinforcement learning (RL) based method, SCST utilizes a customized reward function to associate the training criterion and WER. Furthermore, it removes the reliance on teacher-forcing and harmonizes the model with respect to its inference procedure. We conducted experiments on both clean and noisy speech datasets, and the results show that the proposed SCST respectively achieves 8.7% and 7.8% relative improvements over the baseline in terms of WER." @default.
- W4297206661 created "2022-09-27" @default.
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- W4297206661 date "2022-04-13" @default.
- W4297206661 modified "2023-09-27" @default.
- W4297206661 title "Self-critical Sequence Training for Automatic Speech Recognition" @default.
- W4297206661 doi "https://doi.org/10.48550/arxiv.2204.06260" @default.
- W4297206661 hasPublicationYear "2022" @default.
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