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arXiv 2101.09083cs.SDcs.CLeess.AS
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能量有效的语音识别中束搜索置信度的利用

Exploiting Beam Search Confidence for Energy-Efficient Speech Recognition

Universitat Politècnica de Catalunya(加泰罗尼亚理工大学)

Dennis Pinto, Jose-María Arnau, Antonio González

摘要:

随着计算机在我们的日常生活中变得越来越强大和集成,焦点越来越转向更人性化的界面,使自动语音识别(ASR)成为与机器交互的理想手段。因此,对语音技术的兴趣在过去几年中已经增长,提出了更多的系统并且实现了更高的准确度水平,甚至超过了\textit{Human Accuracy}。随着ASR系统的功能日益强大,其计算复杂性也在增加,硬件支持也必须跟上。在本文中,我们提出了一种提高ASR系统能效和性能的技术,重点关注边缘设备的低功耗硬件。我们专注于优化基于DNN的声学模型评估,因为我们已经观察到它是最先进的ASR系统中的主要瓶颈,通过利用来自束搜索的运行时信息。通过这样做,我们将声学模型评估的能量和执行时间分别减少了25.6%和25.9%,而精度损失可以忽略不计。

英文摘要:

With computers getting more and more powerful and integrated in our daily lives, the focus is increasingly shifting towards more human-friendly interfaces, making Automatic Speech Recognition (ASR) a central player as the ideal means of interaction with machines. Consequently, interest in speech technology has grown in the last few years, with more systems being proposed and higher accuracy levels being achieved, even surpassing \textit{Human Accuracy}. While ASR systems become increasingly powerful, the computational complexity also increases, and the hardware support have to keep pace. In this paper, we propose a technique to improve the energy-efficiency and performance of ASR systems, focusing on low-power hardware for edge devices. We focus on optimizing the DNN-based Acoustic Model evaluation, as we have observed it to be the main bottleneck in state-of-the-art ASR systems, by leveraging run-time information from the Beam Search. By doing so, we reduce energy and execution time of the acoustic model evaluation by 25.6% and 25.9%, respectively, with negligible accuracy loss.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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