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Title:Unwrapping the phase portrait features of adventitious crackle for auscultation and classification: A machine learning approach
Authors:ID Swapna, Mohanachandran Nair Sindhu, UNIVERSITY OF KERALA (Author), et al.
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Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The paper delves into the plausibility of applying fractal, spectral, and nonlinear time series analyses for lung auscultation. The thirty-five sound signals of bronchial (BB) and pulmonary crackle (PC) analysed by fast Fourier transform and wavelet not only give the details of number, nature, and time of occurrence of the frequency components but also throw light onto the embedded air flow during breathing. Fractal dimension, phase portrait, and sample entropy help in divulging the greater randomness, antipersistent nature, and complexity of airflow dynamics in BB than PC. The potential of principal component analysis through the spectral feature extraction categorises BB, fine crackles, and coarse crackles. The phase portrait feature-based supervised classification proves to be better compared to the unsupervised machine learning technique. The present work elucidates phase portrait features as a better choice of classification, as it takes into consideration the temporal correlation between the data points of the time series signal, and thereby suggesting a novel surrogate method for the diagnosis in pulmonology. The study suggests the possible application of the techniques in the auscultation of coronavirus disease 2019 seriously affecting the respiratory system.
Keywords:Auscultation, Biomedical signal processing, Fractals, Machine learning, Phase portrait, Pulmonary crackle.
Publication version:Version of Record
Year of publishing:2021
Number of pages:103-115
Numbering:2, 47
PID:20.500.12556/RUNG-7447 New window
COBISS.SI-ID:113435395 New window
DOI:10.1007/s10867-021-09567-8 New window
NUK URN:URN:SI:UNG:REP:B9DVITTC
Publication date in RUNG:30.06.2022
Views:2114
Downloads:0
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SWAPNA, Mohanachandran Nair Sindhu, 2021, Unwrapping the phase portrait features of adventitious crackle for auscultation and classification: A machine learning approach. Journal of Biological Physics [online]. 2021. Vol. 2, no. 47, p. 103–115. [Accessed 7 April 2025]. DOI 10.1007/s10867-021-09567-8. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=7447
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Record is a part of a journal

Title:Journal of Biological Physics
Year of publishing:2021

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License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:30.06.2022

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