在多模式时间序列上优化睡眠分阶段:利用边界合成少数群体过量抽样技术和监督的卷积对比学习
Xinyu Huang1, Franziska Schmelter2, Muhammad Tausif Irshad1
1Institute of Medical Informatics, University of Lübeck, Germany.
Computers in biology and medicine
|September 24, 2023
概括
一种新的方法,边界合成少数群体过量采样技术 (B-SMOTE) 基于监督卷积对比学习 (BST-SCCL),提高了睡眠阶段分类的准确性. 这种方法有效地解决了睡眠数据中的阶级不平衡,以改善健康洞察力.
科学领域:
- 神经科学和计算生物学
- 精准医学和健康信息学 精准医学和健康信息学
背景情况:
- 睡眠对于身体和精神的恢复至关重要,影响饮食,新陈代谢和激素调节.
- 准确的睡眠阶段分类对于识别睡眠障碍和制定干预措施至关重要.
- 睡眠数据集中的类不平衡显著阻碍了分类性能.
研究的目的:
- 通过解决阶级不平衡,开发一种新的方法来提高睡眠阶段分类的准确性.
- 从EEG,EOG和EMG信号中提取最佳的多式联通特征.
- 通过跨领域的知识互动,增强像N1这样的微妙睡眠阶段的学习.
主要方法:
- 提出了一个基于边界合成少数群体过量采样技术 (B-SMOTE) 的监督卷积对比学习 (BST-SCCL) 模型.
- 使用了轻量级的残余网络架构,并采用了截断的交叉损失函数.
- 采用对智分段比较策略来进行强大的特征学习.
主要成果:
- 在四个公共睡眠数据集 (Sleep-EDF-20,Sleep-EDF-78,ISRUC-1,ISRUC-3) 上取得了卓越的性能.
- 证明了高精度 (91.31-92.34%),MF1得分 (88.21-90.08%) 和科恩的卡帕 (0.87-0.89).
- 有效处理不同健康状况和注释规则中的数据异质性.
结论:
- BST-SCCL有效地解决了类不平衡,并改善了睡眠阶段的分类.
- 该模型显示了精确睡眠医学领域跨领域知识转移的巨大潜力.
- 这种方法为分析复杂的睡眠架构提供了强大的解决方案.
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