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PSAML: A Methodological Approach for Noninvasive Computerized Hydration Level Estimation

delete2026-05-28
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OA
AI
X
Xin Liu *
X
Xuezhao Kang
L
Liqun He
J
Jianrui Zhang
T
Ting Huyan
X
Xiaojun Yu
DOI:10.3390/s26113362delete
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摘要

摘要

En 中文
水合水平(HL)是人类健康和功能状态的关键生理指标,准确监测HL对于医疗保健、体育和健康评估应用至关重要。然而,现有方法要么具有侵入性且不便,要么虽非侵入性但受限于系统复杂性和准确度不足。为解决这些限制,本研究提出了一种基于电导皮肤反应(GSR)信号的非侵入性计算机化HL估计方法学方法,称为PSAML方法,该方法整合了主成分分析(PCA)、逐步分解指数(SDI)和机器学习(ML)分类器。从三名健康受试者在脱水、正常和过度水合状态下,在坐姿、站立和姿势无关场景下收集了代表性的GSR数据集。经过预处理(包括异常值去除、巴特沃斯滤波和时间窗口分割)后,提取了常规时域特征,并与基于PCA和SDI的表示进行比较。使用了六种ML算法进行分类。结果表明,常规特征方法的最大准确率为63.97%,而基于PCA的特征降维显著提高了性能,其中PCA+SVM、PCA+LR和PCA+LDA在大多数情况下准确率超过99%。基于SDI的特征在小时间窗口下与合适的分类器结合也表现出强性能。这些发现表明,所提出的PSAML方法为可穿戴非侵入性HL监测提供了准确高效的解决方案。
Keyword:
hydration level detection
principal component analysis
successive decomposition index
support vector machine
classification
linear discriminant analysis
feature extraction
posture

期刊

Sensors 封面图
Sensors
IF:
3.5
论文数:
7.2W
被引数:
20.9W

机构

N
northwestern polytechnical university
学者数:
1.3W
论文数: 4.6K
被引数: 0
L
Longdong University
学者数:
538
论文数: 266
被引数: 268
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