Results 21 to 30 of about 114 (114)

A nonparametric test for comparing survival functions based on restricted distance correlation

open access: yesDependence Modeling, 2023
In this article, we propose an omnibus test for comparing two survival functions under non-proportional hazards. The test statistic is based on a product-limit estimate of the restricted distance correlation, which is closely related to the L2{L}_{2 ...
Zhang Qingyang
doaj   +1 more source

Polynomial bivariate copulas of degree five: characterization and some particular inequalities

open access: yesDependence Modeling, 2021
Bivariate polynomial copulas of degree 5 (containing the family of Eyraud-Farlie-Gumbel-Morgenstern copulas) are in a one-to-one correspondence to certain real parameter triplets (a, b, c), i.e., to some set of polynomials in two variables of degree 1: p(
Šeliga Adam   +5 more
doaj   +1 more source

On bivariate Archimedean copulas with fractal support

open access: yesDependence Modeling
Due to their simple analytic form (bivariate) Archimedean copulas are usually viewed as very smooth and handy objects, which should distribute mass in a fairly regular and certainly not in a pathological way. Building upon recently established results on
Sánchez Juan Fernández   +1 more
doaj   +1 more source

On the asymptotic covariance of the multivariate empirical copula process

open access: yesDependence Modeling, 2019
Genest and Segers (2010) gave conditions under which the empirical copula process associated with a random sample from a bivariate continuous distribution has a smaller asymptotic covariance than the standard empirical process based on a random sample ...
Genest Christian   +2 more
doaj   +1 more source

Copula-Based Dependence Measures For Piecewise Monotonicity

open access: yesDependence Modeling, 2017
The aim of the present paper is to develop and examine association coefficients which can be helpfully applied in the framework of regression analysis.
Liebscher Eckhard
doaj   +1 more source

New copulas based on general partitions-of-unity (part III) — the continuous case

open access: yesDependence Modeling, 2019
In this paper we discuss a natural extension of infinite discrete partition-of-unity copulas which were recently introduced in the literature to continuous partition of copulas with possible applications in risk management and other fields.
Pfeifer Dietmar   +3 more
doaj   +1 more source

Admissibility and linear sufficiency in linear model with nuisance parameters

open access: yes
Admissibility, BLUE, Linear sufficiency, Partitioned linear model, Nuisance parameters, Reduced model, 15A42, 62J05, 62F10, 62H12, 62H20,
Simo Puntanen, Augustyn Markiewicz
core   +1 more source

On kernel-based estimation of conditional Kendall’s tau: finite-distance bounds and asymptotic behavior

open access: yesDependence Modeling, 2019
We study nonparametric estimators of conditional Kendall’s tau, a measure of concordance between two random variables given some covariates. We prove non-asymptotic pointwise and uniform bounds, that hold with high probabilities.
Derumigny Alexis, Fermanian Jean-David
doaj   +1 more source

Inferences for odds ratio with dependent pairs

open access: yes
Interclass and intraclass odds ratio, Familial data, Binary trait, 62H20, 62G05,
Harry Joe, Yinshan Zhao
core   +1 more source

Dependence properties of bivariate copula families

open access: yesDependence Modeling
Motivated by recently investigated results on dependence measures and robust risk models, this article provides an overview of dependence properties of many well known bivariate copula families, where the focus is on the Schur order for conditional ...
Ansari Jonathan, Rockel Marcus
doaj   +1 more source

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