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A Functional for Copulas and Quasi-Copulas [PDF]
ISRN Probability and Statistics, 2012 We recall and study some properties of a known functional operating on the set of n-copulas and determine conditions under such functional is well defined on the set of n-quasi-copulas. As a consequence, new families of copulas and quasi-copulas are defined, illustrating our results with several examples.
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The Structure of the Class of Maximum Tsallis–Havrda–Chavát Entropy Copulas
Entropy, 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
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Discrete Dynamics in Nature and Society, 2020 Financial data usually have the features of complexity and interdependence structure, such as asymmetric, tail, and time-varying dependence. This study constructs a new multivariate skewed fat-tailed copula, namely, noncentral contaminated normal (NCCN ...
Zhenyu Xiao +3 more
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Copula models in machine learning [PDF]
, 2015 The introduction of copulas, which allow separating the dependence structure of a multivariate distribution from its marginal behaviour, was a major advance in dependence modelling.
Rey, Mélanie
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The grammaticalisation of a copula in vernacular Arabic
Glossa, 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
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Scientific 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
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Perbandingan Analisis Regresi Linear dengan Analisis Regresi Copula pada Data Keuangan
Jambura 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
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Hydrology 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
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A Novel Nonparametric Estimation for Conditional Copula Functions Based on Bayes Theorem
IEEE 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
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On copula moment: empirical likelihood based estimation method [PDF]
Arab 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
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