Results 1 to 10 of about 89,782 (266)

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

open access: diamondArab 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   +3 more sources

Pairs Trading; A Comparison between Student-t and Vine Copulas [PDF]

open access: yesتحقیقات مالی, 2022
Objective: The main purpose of the present research was to compare the performance of pairs trading based on the Vine Copula, Student's t Copula, and Distance approaches. This was done for the first time on the Tehran Stock Exchange (TSE).
Maryam Davallou, Ardavan Yazdi
doaj   +1 more source

Construction of a bivariate copula by Rüschendorf’s method

open access: yesCumhuriyet Science Journal, 2021
In this paper, a new copula model with given unit marginals is proposed, based on Rüschendorf’s Method. A new bivariate copula family is introduced by adding a proper term to independence copula. Thus, we avoid the complexity of the proposed copula model.
Mehmet Yılmaz, Muhammet Bekçı
doaj   +1 more source

A New Form of Farlie-Gumbel-Morgenstern Copula: A Comparative Simulation Study and Application

open access: yesJournal of Statistical Theory and Applications (JSTA), 2021
In this study a new mixture copula has been obtained by creating a linear combination of product copula with copula which is obtained with marginal distributions of order statistics which was proposed by Dolati and Úbeda-Flores, Kybernetika.
Ferhan Baş Kaman, Hülya Olmuş
doaj   +1 more source

A New Family of Archimedean Copulas: The Half-Logistic Family of Copulas

open access: yesMathematics, 2023
In this research, we introduce a truncation of the half-logistic distribution function as a multiplicative Archimedean generator. The corresponding Archimedean copula is obtained, namely the half-logistic family.
Abdulhamid A. Alzaid, Weaam M. Alhadlaq
doaj   +1 more source

A Review of Copula-Based Approach for Water Resources Time Series [PDF]

open access: yesWater Harvesting Research, 2023
This research investigates the utilization of copula functions in the water resources field, encompassing meteorological and hydrological aspects. A review of the Web of Sciences archive revealed 15143 studies featuring copula keywords.
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

A v-transformed copula-based simulation model for lithological classification in an Indian copper deposit

open access: yesScientific Reports, 2022
Copula functions are widely used for modeling multivariate dependence. Since the multivariate data may not necessarily be linear and Gaussian, the copula model is very often brought into the picture for modeling such multivariate phenomena.
K. Dinda, B. Samanta, D. Chakravarty
doaj   +1 more source

Copula in Wildfire Analysis: A Systematic Literature Review

open access: yesInPrime, 2021
Copula model is a method that can be implemented in various study fields, including analyzing wildfires. The copula distribution function gives a simple way to define joint distribution between two or more random variables.
Mohamad Khoirun Najib   +2 more
doaj   +1 more source

Multivariate Extension of Raftery Copula

open access: yesMathematics, 2023
This paper introduces a multivariate extension of Raftery copula. The proposed copula is exchangeable and expressed in terms of order statistics. Several properties of this copula are established.
Tariq Saali, Mhamed Mesfioui, Ani Shabri
doaj   +1 more source

The application of the hybrid copula-GARCH approach in the simulation of extreme discharge values

open access: yesApplied Water Science, 2022
Statistical analysis and simulation of annual maximum discharge values, while considering the corresponding maximum daily rainfall, provide a comprehensive view of flood management.
Mohammad Nazeri Tahroudi   +2 more
doaj   +1 more source

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