Results 21 to 30 of about 2,902,055 (272)

Including the Magnitude Variability of a Signal in the Ordinal Pattern Analysis

open access: yesEntropy
One of the most popular and innovative methods to analyse signals is by using Ordinal Patterns (OPs). The OP encoding is based on transforming a (univariate) signal into a symbolic sequence of OPs, where each OP represents the number of permutations ...
Melvyn Tyloo   +2 more
doaj   +4 more sources

Causality and the entropy–complexity plane: Robustness and missing ordinal patterns [PDF]

open access: yesPhysica A: Statistical Mechanics and Its Applications, 2012
submitted to Physica ...
A Plastino   +2 more
exaly   +5 more sources

Ordinal Random Processes

open access: yesEntropy
Ordinal patterns have proven to be a valuable tool in many fields. Here, we address the need for theoretical models. A paradigmatic example shows that a model for frequencies of ordinal patterns can be determined without any numerical values.
Christoph Bandt
doaj   +2 more sources

Augmenting Granger Causality through continuous ordinal patterns

open access: yesCommunications in Nonlinear Science and Numerical Simulation
Peer ...
Massimiliano Zanin
exaly   +4 more sources

Analysis of signals from air conditioner compressors with ordinal patterns and machine learning

open access: yesJournal of Low Frequency Noise, Vibration and Active Control
Most machines are equipped with devices that monitor their operation. Air conditioners, in particular, are routinely monitored through various measurements.
Keila Barbosa   +2 more
doaj   +2 more sources

Statistically Significant Pattern Mining with Ordinal Utility [PDF]

open access: yesProceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining, 2020
Statistically significant patterns mining (SSPM) is an essential and challenging data mining task in the field of knowledge discovery in databases (KDD), in which each pattern is evaluated via a hypothesis test. Our study aims to introduce a preference relation into patterns and to discover the most preferred patterns under the constraint of ...
Thien Q. Tran   +3 more
openaire   +3 more sources

Permutation Entropy of Weakly Noise-Affected Signals

open access: yesEntropy, 2021
We analyze the permutation entropy of deterministic chaotic signals affected by a weak observational noise. We investigate the scaling dependence of the entropy increase on both the noise amplitude and the window length used to encode the time series. In
Leonardo Ricci, Antonio Politi
doaj   +1 more source

Ordinal pattern dependence as a multivariate dependence measure [PDF]

open access: yesJournal of Multivariate Analysis, 2021
In this article, we show that the recently introduced ordinal pattern dependence fits into the axiomatic framework of general multivariate dependence measures, i.e., measures of dependence between two multivariate random objects. Furthermore, we consider multivariate generalizations of established univariate dependence measures like Kendall's $τ ...
Annika Betken   +3 more
openaire   +4 more sources

Unveiling the Connectivity of Complex Networks Using Ordinal Transition Methods

open access: yesEntropy, 2023
Ordinal measures provide a valuable collection of tools for analyzing correlated data series. However, using these methods to understand information interchange in the networks of dynamical systems, and uncover the interplay between dynamics and ...
Juan A. Almendral   +2 more
doaj   +1 more source

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