Deep learning algorithm evaluation of hypertension classification in less photoplethysmography signals conditions

• Main Authors: Chih-Ta Yen, Sheng-Nan Chang, Cheng-Hong Liao
• Format: Article
• Language: English
• Published: SAGE Publishing 2021-03-01
• Series: Measurement + Control
• Online Access: https://doi.org/10.1177/00202940211001904

This study used photoplethysmography signals to classify hypertensive into no hypertension, prehypertension, stage I hypertension, and stage II hypertension. There are four deep learning models are compared in the study. The difficulties in the study are how to find the optimal parameters such as kernel, kernel size, and layers in less photoplethysmographyt (PPG) training data condition. PPG signals were used to train deep residual network convolutional neural network (ResNetCNN) and bidirectional long short-term memory (BILSTM) to determine the optimal operating parameters when each dataset consisted of 2100 data points. During the experiment, the proportion of training and testing datasets was 8:2. The model demonstrated an optimal classification accuracy of 76% when the testing dataset was used.