Entropy-Facilitated Machine Learning for Blood Pressure Estimation Using Electrocardiogram and Photoplethysmogram in a Wearable Device

Wearable devices that detect electrocardiogram (ECG) signals and photoplethysmogram (PPG) signals have been proposed to be effective at identifying early stage hypertension and estimating blood pressure. On the other hand, information entropy has been applied to determine whether certain biomedical signals represent pathological changes. In this study, Shannon entropy, sample entropy, and permutat...