Results 21 to 30 of about 75,997 (278)

The Structure of the Class of Maximum Tsallis–Havrda–Chavát Entropy Copulas

open access: yesEntropy, 2016
A maximum entropy copula is the copula associated with the joint distribution, with prescribed marginal distributions on [ 0 , 1 ] , which maximizes the Tsallis–Havrda–Chavát entropy with q = 2 .
Jesús E. García   +2 more
doaj   +1 more source

Evolution of coupled lives' dependency across generations and pricing impact [PDF]

open access: yes, 2012
This paper studies the dependence between coupled lives - both within and across generations - and its effects on prices of reversionary annuities in the presence of longevity risk.
Luciano, E., Spreeuw, J., Vigna, E.
core   +1 more source

The grammaticalisation of a copula in vernacular Arabic

open access: yesGlossa, 2019
It is standardly assumed that Arabic copula constructions with present tense interpretation involve either a null copula or a pronominal copula.
Louisa Sadler, Maris Camilleri
doaj   +2 more sources

A new mixture copula model for spatially correlated multiple variables with an environmental application

open access: yesScientific Reports, 2022
In environmental monitoring, multiple spatial variables are often sampled at a geographical location that can depend on each other in complex ways, such as non-linear and non-Gaussian spatial dependence.
Mohomed Abraj   +2 more
doaj   +1 more source

Perbandingan Analisis Regresi Linear dengan Analisis Regresi Copula pada Data Keuangan

open access: yesJambura Journal of Mathematics, 2022
Regression analysis is a statistical analysis to predict or explain the relationship between the response variable and one or more explanatory variables. The simplest and most commonly used regression analysis is linear regression.
Alfi Khairiati   +2 more
doaj   +1 more source

Copula-based drought severity-area-frequency curve and its uncertainty, a case study of Heihe River basin, China

open access: yesHydrology Research, 2020
Copulas are appropriate tools in drought frequency analysis. However, uncertainties originating from copulas in such frequency analysis have not received significant consideration. This study aims to develop a drought severity-areal extent-frequency (SAF)
Zhanling Li   +3 more
doaj   +1 more source

On copula moment: empirical likelihood based estimation method [PDF]

open access: yesArab Journal of Mathematical Sciences, 2022
Purpose – In this paper, the authors applied the empirical likelihood method, which was originally proposed by Owen, to the copula moment based estimation methods to take advantage of its properties, effectiveness, flexibility and reliability of the ...
Jihane Abdelli, Brahim Brahimi
doaj   +1 more source

A Novel Nonparametric Estimation for Conditional Copula Functions Based on Bayes Theorem

open access: yesIEEE Access, 2019
Conditional copula which measures the conditional dependence among variables, possesses a special position in copula field. In this article, based on Bayes theorem, we derive three kinds of conditional copula functions as the product of the corresponding
Xinyao Li, Weihong Zhang, Liangli He
doaj   +1 more source

Copulas

open access: yesUniform distribution theory, 2023
Abstract Two-dimensional distribution function g(x, y) defined in [0, 1]2 is called copula, if g(x, 1) = x and g(1,y)= y for every x, y. Similarly, s-dimensional copula is a distribution function g(x 1,x 2,...,x s) such that every k-dimensional face function
Strauch, Oto, Baláž, Vladimír
openaire   +2 more sources

El tratamiento de la cópula verbal en la historia del pensamiento lingüístico

open access: yesEstudios de Lingüística, 2004
Throughout the history of Linguistics, the verbal copula has been analysed from different viewpoints. Some approaches considered the copula simply as an ordinary verb, without any special features.
Ventura Salazar García
doaj   +1 more source

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