Results 31 to 40 of about 5,166,535 (297)

Penerapan Metode GARCH-Vine Copula untuk Estimasi Value at Risk (VaR) pada Portofolio

open access: yesJurnal Fourier, 2018
Salah satu alat ukur yang digunakan untuk menghitung risiko portofolio adalah Value at Risk (VaR). Beberapa metode pengukuran VaR mengasumsikan return berdistribusi normal dan ukuran dependensi antar saham menggunakan korelasi linear.
Herida Okta Pintari, Retno Subekti
doaj   +1 more source

Bivariate Flood Frequency Analysis Using the Copula Archimedean Function (Gumbel–Hougaard) [PDF]

open access: yesپژوهش‌های آبخیزداری, 2020
Flood is a multivariate and complex phenomenon that has a random nature. In conventional methods of flood frequency analysis, only flood peak variable is important and it is assumed that the variable under consideration follows a particular parametric ...
Mohammad Reza Goodarzi   +3 more
doaj   +1 more source

Functional treatment of asymmetric copulas

open access: yes, 2019
The concept of asymmetric copulas is revisited and is made more precise. We give a rigorous topological argument for opportunity to define asymmetry measures defined recently by K.F Siburg [6] through exhibiting at least three ordered classes of copulas according to a suitable equivalence relation. We define a process of ordering subcopulas which makes
Sani, A., Karbil, L.
openaire   +3 more sources

A COPULA APPLICATION FOR MECHANICAL PROPERTIES [PDF]

open access: yesFiabilitate şi Durabilitate, 2019
Based on copula applications, the work points out the use of cumulative distribution function for the characteristics bivariate cases and the connections among them.
Adrian Stere PARIS
doaj  

Strictly Archimedean copulas with complete association for multivariate dependence based on the Clayton family

open access: yesDependence Modeling, 2018
The family of Clayton copulas is one of the most widely used Archimedean copulas for dependency measurement. A major drawback of this copula is that when it accounts for negative dependence, the copula is nonstrict and its support is dependent on the ...
Cooray Kahadawala
doaj   +1 more source

Correlation between Rainfall and Runoff in Fuchun River Basin Based on Copula Functions and Kernel Density Estimation [PDF]

open access: yes长江科学院院报
[Objective] Rainfall and runoff are two important hydrological variables in river basins, exhibiting the characteristic of random distribution. In-depth analysis of the relationship between rainfall and runoff holds significant importance for watershed ...
YANG Sheng-mei, ZHU De-kang, CHENG Xiang, LI Bo, ZHU Yan-ze, MA Wen-sheng
doaj   +1 more source

Calibrating and Simulating Copula Functions in Financial Applications

open access: yesFrontiers in Applied Mathematics and Statistics, 2021
Copula functions can be utilized in financial applications to determine the dependence structure of the financial asset returns in the portfolio. Empirical evidence has proved the inadequacy of the multi-normal distribution, traditionally adopted to ...
Annalisa Di Clemente, Claudio Romano
doaj   +1 more source

Correlation analysis of diabetes based on Copula

open access: yesFrontiers in Endocrinology
IntroductionThe ratio of Triglyceride (TG) to high-density lipoprotein cholesterol (HDL-C) is a crucial indicator for diabetes diagnosis.MethodsThis study utilizes the Copula function to model and fit the non-linear correlation among fasting blood ...
Chang Liu   +3 more
doaj   +1 more source

Supervised Classification Based on Copula Functions

open access: yesResearch in Computing Science, 2017
Tesis (maestria en ciencias con opcion a la computacion)--Universidad Autonoma de Aguascalientes.
Ángela Paulina Pérez-Díaz   +3 more
openaire   +2 more sources

Monitoring Test for Stability of Dependence Structure in Multivariate Data Based on Copula

open access: yesEntropy, 2016
In this paper, we consider a sequential monitoring procedure for detecting changes in copula function. We propose a cusum type of monitoring test based on the empirical copula function and apply it to the detection of the distributional changes in copula
Jiyeon Lee, Byungsoo Kim
doaj   +1 more source

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