Results 21 to 30 of about 385 (163)

A multivariate version of Williamson’s theorem, ℓ1-symmetric survival functions, and generalized Archimedean copulas

open access: yesDependence Modeling, 2018
Williamson’s integral representation of n-monotone functions on the half-line is generalized to several dimensions. This leads to a characterization of multivariate survival functions with multiply ℓ1- symmetry.
Ressel Paul
doaj   +1 more source

Local Dependence for Bivariate Weibull Distributions Created by Archimedean Copula

open access: yesمجلة بغداد للعلوم, 2021
In multivariate survival analysis, estimating the multivariate distribution functions and then measuring the association between survival times are of great interest.
Swar O. Ahmed   +2 more
doaj   +1 more source

ARCHIMEDEAN COPULAS AND TEMPORAL DEPENDENCE [PDF]

open access: yesEconometric Theory, 2012
We study the dependence properties of stationary Markov chains generated by Archimedean copulas. Under some simple regularity conditions, we show that regular variation of the Archimedean generator at zero and one implies geometric ergodicity of the associated Markov chain.
openaire   +3 more sources

Archimedean copulae and positive dependence [PDF]

open access: yesJournal of Multivariate Analysis, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MUELLER A, SCARSINI, MARCO
openaire   +4 more sources

An Archimedean Copulas-Based Approach for m-Consecutive-k-Out-of-n: F Systems with Exchangeable Components

open access: yesStats, 2023
It is evident that several real-life applications, such as telecommunication systems, call for the establishment of consecutive-type networks. Moreover, some of them require more complex connectors than the ones that exist already in the literature ...
Ioannis S. Triantafyllou
doaj   +1 more source

New Families of Bivariate Copulas via Unit Lomax Distortion

open access: yesRisks, 2020
This article studies a new family of bivariate copulas constructed using the unit-Lomax distortion derived from a transformation of the non-negative Lomax random variable into a variable whose support is the unit interval.
Fadal Abdullah-A Aldhufairi   +2 more
doaj   +1 more source

Theoretical Study of Some Angle Parameter Trigonometric Copulas

open access: yesModelling, 2022
Copulas are important probabilistic tools to model and interpret the correlations of measures involved in real or experimental phenomena. The versatility of these phenomena implies the need for diverse copulas.
Christophe Chesneau
doaj   +1 more source

On an asymmetric extension of multivariate Archimedean copulas based on quadratic form

open access: yesDependence Modeling, 2016
An important topic in Quantitative Risk Management concerns the modeling of dependence among risk sources and in this regard Archimedean copulas appear to be very useful.
Di Bernardino Elena, Rullière Didier
doaj   +1 more source

Residual Probability Function for Dependent Lifetimes

open access: yesMathematics, 2021
In this paper, the residual probability function is applied to analyze the survival probability of two used components relative to each other in the case when their lifetimes are dependent. The expression of the function by copulas has been derived along
Mhamed Mesfioui, Mohamed Kayid
doaj   +1 more source

Deep Archimedean Copulas

open access: yes, 2020
A central problem in machine learning and statistics is to model joint densities of random variables from data. Copulas are joint cumulative distribution functions with uniform marginal distributions and are used to capture interdependencies in isolation from marginals.
Ling, Chun Kai   +2 more
openaire   +2 more sources

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