Results 1 to 10 of about 742 (54)

Change-Point Detection Using the Conditional Entropy of Ordinal Patterns [PDF]

open access: yesEntropy, 2018
This paper is devoted to change-point detection using only the ordinal structure of a time series. A statistic based on the conditional entropy of ordinal patterns characterizing the local up and down in a time series is introduced and investigated.
Anton M. Unakafov, Karsten Keller
doaj   +9 more sources

A Novel Recognition Strategy for Epilepsy EEG Signals Based on Conditional Entropy of Ordinal Patterns [PDF]

open access: yesEntropy, 2020
Epilepsy is one of the most ordinary neuropathic illnesses, and electroencephalogram (EEG) is the essential method for recording various brain rhythm activities due to its high temporal resolution.
Xian Liu, Zhuang Fu
doaj   +5 more sources

Ordinal Conditional Entropy Displays Reveal Intrinsic Characteristics of the Rosenberg Self-Esteem Scale [PDF]

open access: yesEntropy, 2023
Individual subjects’ ratings neither are metric nor have homogeneous meanings, consequently digital- labeled collections of subjects’ ratings are intrinsically ordinal and categorical.
Emanuela Furfaro, Fushing Hsieh
doaj   +2 more sources

Entropy-Guided Regime Switching for Railway Passenger Flow Forecasting: An Adaptive EA-ARIMA-Informer Framework [PDF]

open access: yesEntropy
Railway passenger flow forecasting plays a critical role in operational efficiency and resource allocation for transportation systems. However, existing deep learning approaches suffer significant performance degradation when facing rare but high-impact ...
Silun Tan   +4 more
doaj   +2 more sources

Conditional entropy of ordinal patterns [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 2014
In this paper we investigate a quantity called conditional entropy of ordinal patterns, akin to the permutation entropy. The conditional entropy of ordinal patterns describes the average diversity of the ordinal patterns succeeding a given ordinal pattern.
Unakafov, Anton M., Keller, Karsten
openaire   +2 more sources

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

Permutation Entropy: New Ideas and Challenges

open access: yesEntropy, 2017
Over recent years, some new variants of Permutation entropy have been introduced and applied to EEG analysis, including a conditional variant and variants using some additional metric information or being based on entropies that are different from the ...
Karsten Keller   +3 more
doaj   +1 more source

Algorithmics, Possibilities and Limits of Ordinal Pattern Based Entropies

open access: yesEntropy, 2019
The study of nonlinear and possibly chaotic time-dependent systems involves long-term data acquisition or high sample rates. The resulting big data is valuable in order to provide useful insights into long-term dynamics.
Albert B. Piek   +2 more
doaj   +1 more source

Entropy in scalp EEG can be used as a preimplantation marker for VNS efficacy. [PDF]

open access: yesSci Rep, 2023
Sklenarova B   +9 more
europepmc   +1 more source

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