Results 11 to 20 of about 807,113 (273)

Representing Entropy with Dispersion Sets [PDF]

open access: yesEntropy, 2010
A novel representation of entropy is introduced, based on the heuristic concept of heat dispersion. To this end dispersion sets are defined, which describe both the heat transferred to a system and the associated entropy change.
Bernhard Kolarczyk
doaj   +3 more sources

Dispersion entropy for graph signals [PDF]

open access: yesChaos, Solitons & Fractals, 2023
We present a novel method, called Dispersion Entropy for Graph Signals, DEG, as a powerful tool for analysing the irregularity of signals defined on graphs. DEG generalises the classical dispersion entropy concept for univariate time series, enabling its
Fabila-Carrasco, John Stewart   +6 more
core   +3 more sources

Assessment of Outliers and Detection of Artifactual Network Segments Using Univariate and Multivariate Dispersion Entropy on Physiological Signals [PDF]

open access: yesEntropy, 2021
Network physiology has emerged as a promising paradigm for the extraction of clinically relevant information from physiological signals by moving from univariate to multivariate analysis, allowing for the inspection of interdependencies between organ ...
Evangelos Kafantaris   +3 more
doaj   +2 more sources

A New Method of Fault Feature Extraction Based on Hierarchical Dispersion Entropy

open access: yesShock and Vibration, 2021
In the process of fault feature extraction of rolling bearing, the feature information is difficult to be extracted fully. A novel method of fault feature extraction called hierarchical dispersion entropy is proposed in this paper.
Peng Chen, Xiaoqiang Zhao, HongMei Jiang
doaj   +2 more sources

Coarse-Graining Approaches in Univariate Multiscale Sample and Dispersion Entropy [PDF]

open access: yesEntropy, 2018
The evaluation of complexity in univariate signals has attracted considerable attention in recent years. This is often done using the framework of Multiscale Entropy, which entails two basic steps: coarse-graining to consider multiple temporal scales, and evaluation of irregularity for each of those scales with entropy estimators.
Hamed Azami, Javier Escudero
exaly   +7 more sources

A Feature Extraction Method of Ship-Radiated Noise Based on Fluctuation-Based Dispersion Entropy and Intrinsic Time-Scale Decomposition [PDF]

open access: yesEntropy, 2019
To improve the feature extraction of ship-radiated noise in a complex ocean environment, fluctuation-based dispersion entropy is used to extract the features of ten types of ship-radiated noise.
Zhaoxi Li, Yaan Li, Kai Zhang
doaj   +2 more sources

Augmentation of Dispersion Entropy for Handling Missing and Outlier Samples in Physiological Signal Monitoring [PDF]

open access: yesEntropy, 2020
Entropy quantification algorithms are becoming a prominent tool for the physiological monitoring of individuals through the effective measurement of irregularity in biological signals.
Evangelos Kafantaris   +3 more
doaj   +2 more sources

Dispersion entropy: A Measure of Irregularity for Graph Signals [PDF]

open access: yes, 2023
We introduce a novel method, called Dispersion Entropy for Graph Signals, $DE_G$, as a powerful tool for analysing the irregularity of signals defined on graphs.
Fabila-Carrasco, John Stewart   +2 more
core   +4 more sources

Multivariate Multiscale Dispersion Entropy of Biomedical Times Series [PDF]

open access: yesEntropy (Basel), 2019
Due to the non-linearity of numerous physiological recordings, non-linear analysis of multi-channel signals has been extensively used in biomedical engineering and neuroscience. Multivariate multiscale sample entropy (MSE - mvMSE) is a popular non-linear
Azami H, Fernández A, Escudero J.
europepmc   +8 more sources

Assessment of Dispersion and Bubble Entropy Measures for Enhancing Preterm Birth Prediction Based on Electrohysterographic Signals

open access: yesSensors, 2021
One of the remaining challenges for the scientific-technical community is predicting preterm births, for which electrohysterography (EHG) has emerged as a highly sensitive prediction technique.
Félix Nieto-del-Amor   +8 more
doaj   +3 more sources

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