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Two Measures of Dependence [PDF]

open access: yesEntropy, 2019
Two families of dependence measures between random variables are introduced. They are based on the Rényi divergence of order α and the relative
Amos Lapidoth, Christoph Pfister
doaj   +7 more sources

Extending Hilbert–Schmidt Independence Criterion for Testing Conditional Independence

open access: yesEntropy, 2023
The Conditional Independence (CI) test is a fundamental problem in statistics. Many nonparametric CI tests have been developed, but a common challenge exists: the current methods perform poorly with a high-dimensional conditioning set.
Bingyuan Zhang, Joe Suzuki
doaj   +1 more source

Maximal asymmetry of bivariate copulas and consequences to measures of dependence

open access: yesDependence Modeling, 2022
In this article, we focus on copulas underlying maximal non-exchangeable pairs (X,Y)\left(X,Y) of continuous random variables X,YX,Y either in the sense of the uniform metric d∞{d}_{\infty } or the conditioning-based metrics Dp{D}_{p}, and analyze their ...
Griessenberger Florian   +1 more
doaj   +1 more source

Model Selection Based on Residual Dependence Measure

open access: yesIEEE Access, 2023
Choosing the most suitable model from a set of models is crucial. Based on the assumption that the noise and independent variables in the model are independent, the degree of fit of the model was determined by studying the correlation between the ...
Linfeng Lyu, Yiming Ding, Yuan Wan
doaj   +1 more source

A link between Kendall’s τ, the length measure and the surface of bivariate copulas, and a consequence to copulas with self-similar support

open access: yesDependence Modeling, 2023
Working with shuffles, we establish a close link between Kendall’s τ\tau , the so-called length measure, and the surface area of bivariate copulas and derive some consequences.
Sánchez Juan Fernández   +1 more
doaj   +1 more source

A Note on the Maximum Difference Between Schweizer and Wolff's $\sigma$ and the Absolute Value of Spearman's $\rho$ [PDF]

open access: yesTransactions on Fuzzy Sets and Systems, 2022
In this note we correct an error on the possible maximum difference between the (measure of dependence) Schweizer and Wolff's sigma and the absolute value of the (measure of concordance) Spearman's rho given in [B. Schweizer and E. F.
Manuel Ubeda-Flores
doaj   +1 more source

Plug-in Estimation of Dependence Characteristics of Archimedean Copula via Bézier Curve

open access: yesRevstat Statistical Journal, 2023
This article introduces measurement of the dependence between variables with a dependence structure defined by Archimedean copulas. The estimation of the dependence measure, such as Kendall’s tau as well as the lower and upper tail dependence, is ...
Selim Orhun Susam   +1 more
doaj   +1 more source

Hidden Markov Models as a Tool for the Assessment of Dependence of Phenomena of Economic Nature

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2018
The assessment of dependence between time series is a common dilemma, which is often solved by the use of the Pearson’s correlation coefficient. Unfortunately, sometimes, the results may be highly misleading.
Michał Bernardelli
doaj   +1 more source

Mutual Information and Dynamic Measure of Inaccuracy between Past Lifetime Distributions [PDF]

open access: yesThe Egyptian Statistical Journal, 2010
The mutual information is a measure of the dependence of two random variables. We propose an extension of this notion to measure the dependence between the inactivity lifetimes of two systems, given that both systems have failure at time t.
Mervat Mahdy Ramadan Mahdy
doaj   +1 more source

A Class of Association Measures for Categorical Variables Based on Weighted Minkowski Distance

open access: yesEntropy, 2019
Measuring and testing association between categorical variables is one of the long-standing problems in multivariate statistics. In this paper, I define a broad class of association measures for categorical variables based on weighted Minkowski distance.
Qingyang Zhang
doaj   +1 more source

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