在帕金森病中基于传感器的可穿戴活动识别深度神经网络:研究可概括性和模型复杂性
Shelly Davidashvilly1, Maria Cardei1,2, Murtadha Hssayeni1,3
1Electrical and Computer Engineering, Florida Atlantic University, Boca Raton, FL, 33431, US.
Biomedical engineering online
|February 9, 2024
概括
使用可穿戴传感器的深度神经网络模型可以准确地识别帕金森病患者的活动. 数据增强和域调整显著提高了从健康个体到帕金森病患者的模型通用性.
科学领域:
- 生物医学工程 生物医学工程
- 机器学习 机器学习
- 可穿戴技术可穿戴技术
背景情况:
- 深度神经网络 (NN) 模型正在探索在帕金森病患者 (PwPD) 中使用可穿戴传感器数据进行活动识别.
- 一个关键的研究差距是了解这些模型的可通用性,这些模型在健康数据上训练到PwPD.
研究的目的:
- 通过使用可穿戴传感器数据,评估深度NN模型的适用性和通用性,用于PwPD中的活动识别.
- 调查数据增强和域调整对健康到PwPD转移学习场景中的模型性能的影响.
主要方法:
- 使用了三个数据集 (PAMAP2,MHEALTH和一个私人PwPD数据集) 与加速度计传感器读数.
- 实施了不同复杂度的深度NN模型,探索数据增强,轴向重定位和域调整技术.
主要成果:
- 一个适度复杂的模型,在增强数据上训练并适应帕金森病领域,实现了73.02%的准确性,超过了以前的研究 (63%).
- 随着增强和域适应,F1得分显著提高至49.79%,而仅使用增强时为33.66%,没有增强时为2.88%.
结论:
- 在健康数据上训练的深度NN模型可以被通用化,通过数据增强和域调整来更准确地识别PwPD中的活动.
- 简单/中等复杂的NN架构与高度复杂的NN架构相比,对PwPD领域的概括性更好.
- 这些发现支持开发基于可穿戴的PwPD监测解决方案,这可能有助于改善临床决策和患者的治疗结果.
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