title: An unsupervised learning for robust cardiac feature derivation from PPG signals.
abstract: We propose here derivation algorithms for physiological parameters like beat start point, systolic peak, pulse duration, peak-to-peak distance related to heart rate, dicrotic minima, diastolic peak from Photoplethysmogram (PPG) signals robustly. Our methods are based on unsupervised learning mainly following morphology as well as discrete nature of the signal. Statistical learning has been used as a special aid to infer most probable feature values mainly to cope up with presence of noise, which is assumed to be insignificant compared to signal values at each investigation window. Performance of the proposed method is found to be better than other standard methods, yielding precision and sensitivity more than 97% obtained from three real life data sets.
authors.forename: Soma
authors.initials: S
authors.lastname: Bandyopadhyay
authors.forename: Arijit
authors.initials: A
authors.lastname: Ukil
authors.forename: Chetanya
authors.initials: C
authors.lastname: Puri
authors.forename: Rituraj
authors.initials: R
authors.lastname: Singh
authors.forename: Arpan
authors.initials: A
authors.lastname: Pal
authors.forename: K M
authors.initials: KM
authors.lastname: Mandana
authors.forename: C A
authors.initials: CA
authors.lastname: Murthy
mesh_terms: D000465:Algorithms; D003971:Diastole; D006339:Heart Rate; D006801:Humans; D017156:Photoplethysmography; D012815:Signal Processing, Computer-Assisted; D013599:Systole; D000069558:Unsupervised Machine Learning