Results 31 to 40 of about 3,141,344 (325)

Ordinal Patterns, Entropy, and EEG

open access: yesEntropy, 2014
In this paper we illustrate the potential of ordinal-patterns-based methods for analysis of real-world data and, especially, of electroencephalogram (EEG) data. We apply already known (empirical permutation entropy, ordinal pattern distributions) and new
Karsten Keller   +2 more
doaj   +1 more source

A Novel Hybrid Approach for Partial Discharge Signal Detection Based on Complete Ensemble Empirical Mode Decomposition with Adaptive Noise and Approximate Entropy

open access: yesEntropy, 2020
To eliminate the influence of white noise in partial discharge (PD) detection, we propose a novel method based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and approximate entropy (ApEn).
Haikun Shang   +4 more
semanticscholar   +1 more source

Soft Randomized Machine Learning Procedure for Modeling Dynamic Interaction of Regional Systems

open access: yesEntropy, 2019
The paper suggests a randomized model for dynamic migratory interaction of regional systems. The locally stationary states of migration flows in the basic and immigration systems are described by corresponding entropy operators.
Yuri S. Popkov
doaj   +1 more source

Using the Hurst Exponent and Entropy Measures to Predict Effective Transmissibility in Empirical Series of Malaria Incidence

open access: yesApplied Sciences, 2022
We analyze the empirical series of malaria incidence, using the concepts of autocorrelation, Hurst exponent and Shannon entropy with the aim of uncovering hidden variables in those series.
João Sequeira   +3 more
doaj   +1 more source

An Entropy-Based Approach to Measurement of Stock Market Depth

open access: yesEntropy, 2021
The aim of this study is to investigate market depth as a stock market liquidity dimension. A new methodology for market depth measurement exactly based on Shannon information entropy for high-frequency data is introduced and utilized.
Joanna Olbryś, Krzysztof Ostrowski
doaj   +1 more source

Early Detection of Sudden Cardiac Death by Using Ensemble Empirical Mode Decomposition-Based Entropy and Classical Linear Features From Heart Rate Variability Signals

open access: yesFrontiers in Physiology, 2020
Sudden cardiac death (SCD), which can deprive a person of life within minutes, is a destructive heart abnormality. Thus, providing early warning information for patients at risk of SCD, especially those outside hospitals, is essential.
Manhong Shi   +8 more
semanticscholar   +1 more source

The Role of Vegetation on the Ecosystem Radiative Entropy Budget and Trends Along Ecological Succession

open access: yesEntropy, 2014
Ecosystem entropy production is predicted to increase along ecological succession and approach a state of maximum entropy production, but few studies have bridged the gap between theory and data.
Paul C. Stoy   +4 more
doaj   +1 more source

Entropy Generation through Deterministic Spiral Structures in a Corner Boundary-Layer Flow

open access: yesEntropy, 2015
It is shown that nonlinear interactions between boundary layers on adjacent corner surfaces produce deterministic stream wise spiral structures. The synchronization properties of nonlinear spectral velocity equations of Lorenz form yield clearly defined ...
LaVar King Isaacson
doaj   +1 more source

Maximum Entropy for the International Division of Labor. [PDF]

open access: yesPLoS ONE, 2015
As a result of the international division of labor, the trade value distribution on different products substantiated by international trade flows can be regarded as one country's strategy for competition.
Hongmei Lei   +4 more
doaj   +1 more source

Quantifying Information Content in Survey Data by Entropy

open access: yesEntropy, 2010
We apply Shannon entropy as a measure of information content in survey data, and define information efficiency as the empirical entropy divided by the maximum attainable entropy.
Nina Østerås, Fredrik A. Dahl
doaj   +1 more source

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