Results 101 to 110 of about 2,966 (203)

Factor Tree Copula Models for Item Response Data. [PDF]

open access: yesPsychometrika, 2023
Kadhem SH, Nikoloulopoulos AK.
europepmc   +1 more source

Factor Copula through a vine structure

open access: yes, 2012
Copula functions have been widely used in actuarial science, finance and econometrics. Though multivariate copulas allow for a flexible specification of the dependence structure of economic variables, they are not particularly tempting in high dimensional contexts.
openaire   +3 more sources

Exhaustive Structure Learning of R-Vine Copula Models for Analyzing Multiband Spectrum Utilization in Mobile Communications

open access: yesIEEE Access
Accurate modeling of multiband spectrum utilization is essential for data-driven spectrum management and refarming in mobile communication systems. However, the bounded and non-Gaussian nature of Resource Block (RB) utilization, together with complex ...
Yunbae Kim   +3 more
doaj   +1 more source

Chimera: An atlas of regular vines on up to 8 nodes. [PDF]

open access: yesSci Data, 2023
Morales-Nápoles O   +3 more
europepmc   +1 more source

Investigating the probabilistic behavior of reference evapotranspiration using Vine tree sequence

open access: yesApplied Water Science
Reference evapotranspiration, which includes the contribution of climatic conditions in potential evapotranspiration, is considered as an important and strategic criterion in water resources management and irrigation designs.
Aliheidar Nasrolahi   +2 more
doaj   +1 more source

An econometric Study for Vine Copulas

open access: yes, 2011
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. We proove the asymptotic normality of the vine copula parameter estimator and show that all vine copula parameter estimators have comparable ...
Guegan, Dominique, Maugis, Pierre-André
openaire   +2 more sources

Dependence analysis of ethanol, suga, oil, BRL/USD exchange rate and Bovespa: a vine copula approach

open access: yesEconomia Aplicada, 2015
The aim of this study is to assess the dependence relationship of the sugarcane sector (represented by Ethanol and Sugar), Oil, BRL/USD Exchange Rate and Brazilian stock market (represented by the BOVESPA – Bolsa de Valores de São Paulo – Index).
Anderson Gomes Resende, Osvaldo Candido
doaj  

Mixed vine copula flows for flexible modeling of neural dependencies. [PDF]

open access: yesFront Neurosci, 2022
Mitskopoulos L, Amvrosiadis T, Onken A.
europepmc   +1 more source

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