Results 271 to 280 of about 19,320 (310)

Detrended fluctuation analysis using orthogonal polynomials

Physical Review E, 2020
An alternative analysis approach, namely, orthogonal detrended fluctuation analysis (ODFA), is proposed to quantify the long-range correlation exponent. This method uses an orthogonal polynomial to attenuate any trends and quantify the (auto-) correlations in the data. The method is tested using numerically simulated data with long-range correlation. A
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Detrended fluctuation analysis for major depressive disorder

2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015
Clinical utility of Electroencephalography (EEG) based diagnostic studies is less clear for major depressive disorder (MDD). In this paper, a novel machine learning (ML) scheme was presented to discriminate the MDD patients and healthy controls. The proposed method inherently involved feature extraction, selection, classification and validation.
Wajid, Mumtaz, Aamir Saeed, Malik, Syed Saad Azhar, Ali, Mohd Azhar Mohd, Yasin, Hafeezullah, Amin   +4 more
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Smoothed detrended fluctuation analysis

Journal of Statistical Computation and Simulation, 2016
ABSTRACTThe method of detrended fluctuation analysis (DFA) is useful in revealing the extent of long-range dependence, it has successfully been applied to different fields of interest. In this paper we proposed a smoothed detrended fluctuation analysis method based on the principle of wavelet shrinkage.
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Detrended Fluctuation Analysis of uterine electromyography

2011 1st Middle East Conference on Biomedical Engineering, 2011
In respect to the main goal of our ongoing work for predicting preterm birth, we analyze in this paper uterine EMG recordings of 11 pregnant and laboring women by means of Detrended Fluctuation Analysis (DFA), a scaling analysis method that quantifies a simple parameter to represent the correlation properties of a time series.
Bassam Moslem, Mohamad O. Diab, Mohamad Khalil, Catherine Marque   +3 more
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MULTIFRACTAL DETRENDED FLUCTUATIONS ANALYSIS FOR IBOVESPA ASSETS

Fractals, 2021
The Efficient Market Hypothesis (EMH) can be considered the central pillar of support of the Modern Economic-Financial Theory. However, in the last few years, the EMH has been strongly contraried due to empirical evidence related to long-memory, fractal dimension and fat-tailed that were critical factors in formulating a theory opposed to EMH called ...
FERNANDO HENRIQUE ANTUNES DE ARAUJO, LEONARDO HENRIQUE SILVA FERNANDES   +1 more
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Detrended Fluctuation Analysis of Traffic Data

Chinese Physics Letters, 2007
Different routing strategies may result in different behaviour of traffic on internet. We analyse the correlation of traffic data for three typical routing strategies by the detrended fluctuation analysis (DFA) and find that the degree of correlation of the data can be divided into three regions, i.e. weak, medium, and strong correlation.
Zhu Xiao-Yan, Liu Zong-Hua, Tang Ming
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Epilepsy detection using Detrended Fluctuation Analysis

2009 International Conference on Wavelet Analysis and Pattern Recognition, 2009
Epilepsy is a disorder of the central nervous system characterized by the loss of consciousness and convulsions. If some early warning signal of an upcoming seizure (diagnosis of preictal period) could be detected, proper treatment could be applied to the patient to help prevent the seizure.
Reza Shalbaf, Pegah Tayaranian Hosseini, Morteza Analoui   +2 more
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Detrended fluctuation analysis of repetitive handwriting

2017 International Conference on Noise and Fluctuations (ICNF), 2017
Although there is a tendency that the opportunity to write by hand is decreasing, handwriting is still one of the everyday activities of our lives. In this study, the experimental system that limits the writing speed of a subject was set up. The aim was to measure the fluctuation time series of a time element obtained from the measurement performed ...
Ryo Kumagai, Masafumi Uchida
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Detecting mental EEG properties using detrended fluctuation analysis

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference, 2005
Based on detrended fluctuation analysis (DFA), we explore the characteristics of multichannel electroencephalogram (EEG), which is recorded from many subjects performing different mental tasks. The results show that mental EEG exhibits long-range power-law correlations by calculating its scaling exponents (alpha), which can reflect the kinds of mental ...
Zhaohui, Jiang, Yan, Ning, Bin, An, Ao, Li, Huanqing, Feng   +4 more
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Multifractal Detrended Fluctuation Analysis of Network Traffic

2010 International Conference on Computational Intelligence and Software Engineering, 2010
Whether network traffic in fine scales (below about 1 second) behaves multifractality is controversial in past studies. In recent years, the multifractal detrended fluctuation analysis (MFDFA) is widely used as a robust tool to investigate the scale behavior of non-stationary time series.
Hanlin Sun, Yuehui Jin, Yidong Cui, Shiduan Cheng   +3 more
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