Results 21 to 30 of about 773,938 (293)
A Multithreaded Algorithm for the Computation of Sample Entropy
Algorithms, 2023 Many popular entropy definitions for signals, including approximate and sample entropy, are based on the idea of embedding the time series into an m-dimensional space, aiming to detect complex, deeper and more informative relationships among samples ...
George Manis +2 more
doaj +1 more source
Entropy and co-entropy of a covering approximation space
International Journal of Approximate Reasoning, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ping Zhu 0001, Qiaoyan Wen
openaire +3 more sources
Investigating the Predictability of Photovoltaic Power Using Approximate Entropy
Frontiers in Energy Research, 2021 The predictability concept of Photovoltaic (PV) power on the time series was presented and the approximate entropy algorithm and predictable coefficient were used to quantificationally analyze the predictability of PV power on time series, then the ...
Mao Yang +5 more
doaj +1 more source
Channel Entropy and Primitive Approximation
The Annals of Probability, 1982 For stationary channels, channel entropy is defined as the supremum of the conditional output entropy over all stationary input sources. If the channel is $\bar{d}$-continuous and conditionally almost block independent, channel entropy gives an upper bound to the output rate of the channel.
Neuhoff, David L., Shields, Paul C.
openaire +2 more sources
Complexity, 2018 Background. Nonlinear heart rate variability (HRV) indices have extended the description of autonomic nervous system (ANS) regulation of the heart.
Juan Bolea, Raquel Bailón, Esther Pueyo
doaj +1 more source
Nonlinear heart rate variability features for real-life stress detection. Case study : students under stress due to university examination [PDF]
, 2011 Background: This study investigates the variations of Heart Rate Variability (HRV) due to a real-life stressor and proposes a classifier based on nonlinear features of HRV for automatic stress detection.
Melillo Paolo +11 more
core +1 more source
Measurement Science Review, 2012 For non-solidly earthed network, the fault localization of single phase grounding fault has been a problem. A novel fault localization and fault type recognition method of single phase grounding fault based on approximate entropy is presented.
Pang Qingle +3 more
doaj +1 more source
The effect of signal acquisition and processing choices on ApEn values: Towards a “gold standard” for distinguishing effort levels from isometric force records [PDF]
, 2014 Approximate Entropy (ApEn) is frequently used to identify changes in the complexity of isometric force records with ageing and disease. Different signal acquisition and processing parameters have been used, making comparison or confirmation of results ...
Forrest, Sarah M. +2 more
core +1 more source
Comparative Analysis of Preference in Contemporary and Earlier Texts Using Entropy Measures [PDF]
, 2023 Research in computational textual aesthetics has shown that there are textual correlates of preference in prose texts. The present study investigates whether textual correlates of preference vary across different time periods (contemporary texts versus ...
Redies, Christoph +5 more
core +1 more source
Sample entropy analysis of cervical neoplasia gene-expression signatures
BMC Bioinformatics, 2009 Background We introduce Approximate Entropy as a mathematical method of analysis for microarray data. Approximate entropy is applied here as a method to classify the complex gene expression patterns resultant of a clinical sample set.
Salama Salama A +4 more
doaj +1 more source