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arXiv 2004.06044eess.SPcs.LG
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使用联合频率-时间和无监督特征的睡眠阶段评分

Sleep Stage Scoring Using Joint Frequency-Temporal and Unsupervised Features

Mohamadreza Jafaryani, Saeed Khorram, Vahid Pourahmadi, Minoo Shahbazi

摘要:

如果睡眠障碍患者了解自己的特殊情况,他们可以更好地管理自己的生活方式。通常可以通过分析从患者收集的多个生命信号来检测这种睡眠障碍。为了简化这项任务,已经提出了许多自动睡眠阶段识别(ASSR)方法。这些方法中的大多数使用已经从生命信号中提取的时间-频率特征。然而,由于睡眠信号的非平稳性质,这样的方案不会导致可接受的精度。最近,人们提出了一些ASSR方法,这些方法使用深度神经网络进行无监督特征提取。在本文中,我们提出了结合这两种思想,并同时使用时频和无监督特征。为了提高时间分辨率,每个标准历元被分割成5个子历元。此外,为了提高准确率,我们采用了三个不同属性的分类器,然后使用集成方法作为最终的分类器。仿真结果表明,该方法提高了传统ASSR方法的准确性。

英文摘要:

Patients with sleep disorders can better manage their lifestyle if they know about their special situations. Detection of such sleep disorders is usually possible by analyzing a number of vital signals that have been collected from the patients. To simplify this task, a number of Automatic Sleep Stage Recognition (ASSR) methods have been proposed. Most of these methods use temporal-frequency features that have been extracted from the vital signals. However, due to the non-stationary nature of sleep signals, such schemes are not leading an acceptable accuracy. Recently, some ASSR methods have been proposed which use deep neural networks for unsupervised feature extraction. In this paper, we proposed to combine the two ideas and use both temporal-frequency and unsupervised features at the same time. To augment the time resolution, each standard epoch is segmented into 5 sub-epochs. Additionally, to enhance the accuracy, we employ three classifiers with different properties and then use an ensemble method as the ultimate classifier. The simulation results show that the proposed method enhances the accuracy of conventional ASSR methods.

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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