利用多头状态空间模型和迁移学习进行空中交通管制语音识别

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Haijun Liang, Hanwen Chang, Jianguo Kong
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引用次数: 0

摘要

本研究为空中交通管制(ATC)系统开发了一种新型端到端自动语音识别(ASR)框架,即 ResNeXt-Mssm-CTC。该框架以多头状态空间模型(Mssm)为基础,并结合了迁移学习技术。残差网络(ResNeXt)采用多层卷积与残差连接,以增强从语音信号中提取复杂特征表征的能力。Mssm 具有专门的门控机制,它结合了并行头,可获取序列数据中局部和全局时间动态的知识。在序列标注中使用了连接主义时序分类(CTC),从而消除了强制对齐的要求,并适应不同长度的标注。此外,迁移学习的使用已被证明可以利用从源任务中获得的知识来提高目标任务的性能。实验结果表明,与其他基线模型相比,本研究提出的模型表现出更优越的性能。具体来说,在 Aishell 语料库上进行预训练时,该模型的最小字符错误率 (CER) 为 7.2% 和 8.3%。此外,当应用于 ATC 语料库时,CER 降至 5.5% 和 6.7%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Speech Recognition for Air Traffic Control Utilizing a Multi-Head State-Space Model and Transfer Learning
In the present study, a novel end-to-end automatic speech recognition (ASR) framework, namely, ResNeXt-Mssm-CTC, has been developed for air traffic control (ATC) systems. This framework is built upon the Multi-Head State-Space Model (Mssm) and incorporates transfer learning techniques. Residual Networks with Cardinality (ResNeXt) employ multi-layered convolutions with residual connections to augment the extraction of intricate feature representations from speech signals. The Mssm is endowed with specialized gating mechanisms, which incorporate parallel heads that acquire knowledge of both local and global temporal dynamics in sequence data. Connectionist temporal classification (CTC) is utilized in the context of sequence labeling, eliminating the requirement for forced alignment and accommodating labels of varying lengths. Moreover, the utilization of transfer learning has been shown to improve performance on the target task by leveraging knowledge acquired from a source task. The experimental results indicate that the model proposed in this study exhibits superior performance compared to other baseline models. Specifically, when pretrained on the Aishell corpus, the model achieves a minimum character error rate (CER) of 7.2% and 8.3%. Furthermore, when applied to the ATC corpus, the CER is reduced to 5.5% and 6.7%.
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
期刊介绍: ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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