2020/11/30 by Jeffrey Chan, Andrew C. Miller, Chan, Jeffrey +3 · 2 citations
Computer Science · Engineering · Mathematics · Medicine · #Applications (stat.AP) #Artificial intelligence #Computer science #ECG Monitoring and Analysis #Embedded system #FOS: Computer and information sciences #Heart Rate Variability and Autonomic Control #Machine Learning (cs.LG) #Machine Learning (stat.ML) #Noise (video) #Noise reduction #Non-Invasive Vital Sign Monitoring #Pattern recognition (psychology) #Wearable computer #Wearable technology #cs.LG #stat.AP #stat.ML
paper · pdf · doi:10.48550/arxiv.2012.00110
published in arXiv (Cornell University) (Cornell University) · ML for Mobile Health Workshop, NeurIPS 2020
arxiv created 2020/11/30 · openalex publication_date 2020/11/30 · arxiv updated 2020/12/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Modern wearable devices are embedded with a range of noninvasive biomarker sensors that hold promise for improving detection and treatment of disease. One such sensor is the single-lead electrocardiogram (ECG) which measures electrical signals in the heart. The benefits of the sheer volume of ECG measurements with rich longitudinal structure made possible by wearables come at the price of potentially noisier measurements compared to clinical ECGs, e.g., due to movement. In this work, we develop a statistical model to simulate a structured noise process in ECGs derived from a wearable sensor, design a beat-to-beat representation that is conducive for analyzing variation, and devise a factor analysis-based method to denoise the ECG. We study synthetic data generated using a realistic ECG simulator and a structured noise model. At varying levels of signal-to-noise, we quantitatively measure an upper bound on performance and compare estimates from linear and non-linear models. Finally, we apply our method to a set of ECGs collected by wearables in a mobile health study.