Pulse Wave Velocity Estimation Using Photoplethysmogram-Based Limited Penetrable Weighted Visibility Graph Features.

In this paper, we propose a data-driven model lever-aging a Limited Penetrable Weighted Visibility Graph (LPWVG) derived from the photoplethysmogram (PPG) waveform for Pulse Wave Velocity (PWV) estimation. Four distinct LPWVGs were constructed employing diverse weighted methods. Subsequently, various features have been computed and extracted from PPG images, including two-dimensional Semi-classical Signal Analysis (SCSA)-based features, frequency-based features, and shape-based features.