Results 41 to 50 of about 87,023 (313)

Single-index copulas [PDF]

open access: yesJournal of Multivariate Analysis, 2018
Revised version: correction of Assumption 3 and some minor induced ...
Fermanian, Jean-David, Lopez, Olivier
openaire   +5 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

Improving forecasting performance using covariate-dependent copula models

open access: yes, 2018
Copulas provide an attractive approach for constructing multivariate distributions with flexible marginal distributions and different forms of dependences.
Kang, Yanfei, Li, Feng
core   +1 more source

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

On approximation of copulas [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
New sufficient conditions for strong approximation of copulas, generated by sequences of partitions of unity, are given. Results are applied to the checkerboard and Bernstein approximations.
openaire   +4 more sources

On the estimation of normal copula discrete regression models using the continuous extension and simulated likelihood [PDF]

open access: yes, 2013
The continuous extension of a discrete random variable is amongst the computational methods used for estimation of multivariate normal copula-based models with discrete margins.
Aristidis K. Nikoloulopoulos   +36 more
core   +2 more sources

VALUE AT RISK ESTIMATION FOR STOCK PORTFOLIO USING THE ARCHIMEDEAN COPULA APPROACH

open access: yesBarekeng
Investment is one of the many ways to achieve future profits. One form of investment that is widely made is stocks. The return obtained in investing in stocks is potentially higher than other investment alternatives, but the risks borne are amplified, so
Mohammad Dicky Saifullah   +3 more
doaj   +1 more source

Trivariate joint frequency analysis of water resources deficiency signatures using vine copulas

open access: yesApplied Water Science, 2022
Investigating the interaction of water resources such as rainfall, river flow and groundwater level can be useful to know the behavior of water balance in a basin.
Mohammad Nazeri Tahroudi   +3 more
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

The Challenge of Handling Structured Missingness in Integrated Data Sources

open access: yesAdvanced Intelligent Discovery, EarlyView.
As data integration becomes ever more prevalent, a new research question that emerges is how to handle missing values that will inevitably arise in these large‐scale integrated databases? This missingness can be described as structured missingness, encompassing scenarios involving multivariate missingness mechanisms and deterministic, nonrandom ...
James Jackson   +6 more
wiley   +1 more source

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