Results 91 to 100 of about 66,819 (259)

Discrete copulas and quasi-copulas

open access: yes, 2022
The thesis gives a brief introduction to two dimensional copulas and related functions. Firstly, we present copulas, their usage and according history. Furthermore, in the text we include some examples and visual representations for this purpose. Copulas are cumulative distribution functions defined on the unit square with marginal distributions which ...
openaire   +1 more source

An Econometric Study of Vine Copulas [PDF]

open access: yes
We present a new recursive algorithm to construct vine copulas based on an underlying tree structure. This new structure is interesting to compute multivariate distributions for dependent random variables.
Dominique Guegan, Pierre-André Maugis
core  

Modeling Dependence in High Dimensions With Factor Copulas

open access: yes, 2015
This article presents flexible new models for the dependence structure, or copula, of economic variables based on a latent factor structure. The proposed models are particularly attractive for relatively high-dimensional applications, involving 50 or ...
D. Oh, Andrew J. Patton
semanticscholar   +1 more source

On approximating copulas by finite mixtures

open access: yes, 2018
Copulas are now frequently used to approximate or estimate multivariate distributions because of their ability to take into account the multivariate dependence of the variables while controlling the approximation properties of the marginal densities ...
Khaled, Mohamad A., Kohn, Robert
core  

Nonparametric Estimation of Copulas for Time Series [PDF]

open access: yes
We consider a nonparametric method to estimate copulas, i.e. functions linking joint distributions to their univariate margins. We derive the asymptotic properties of kernel estimators of copulas and their derivatives in the context of a multivariate ...
Jean-David FERMANIAN, Olivier SCAILLET
core  

Tail Dependence among Agricultural Insurance Indices: The Case of Iowa County-Level Rainfalls [PDF]

open access: yes
Index insurance has been promoted as a cost-effective risk management alternative for agricultural producers in developing countries. In this paper, we ask whether spatially separated weather variables commonly used in index insurance design, such as ...
Liu, Pu, Miranda, Mario J.
core   +1 more source

ESTIMASI CADANGAN KLAIM MENGGUNAKAN GENERALIZED LINEAR MODEL (GLM) DAN COPULA

open access: diamond, 2020
Yuciana Wilandari   +2 more
openalex   +2 more sources

Tails of correlation mixtures of elliptical copulas

open access: yes, 2009
Correlation mixtures of elliptical copulas arise when the correlation parameter is driven itself by a latent random process. For such copulas, both penultimate and asymptotic tail dependence are much larger than for ordinary elliptical copulas with the ...
Manner, Hans, Segers, Johan
core  

Wind Turbine Power Curve Modelling using Gaussian Mixture Copula, ANN Regressive and BANN

open access: diamond, 2022
Roberto Lázaro   +2 more
openalex   +1 more source

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