Results 31 to 40 of about 24,138 (305)

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

Snow-melt flood frequency analysis by means of copula based 2D probability distributions for the Narew River in Poland

open access: yesJournal of Hydrology: Regional Studies, 2016
Study region: Narew River in Northeastern Poland. Study focus: Three methods for frequency analysis of snowmelt floods were compared. Two dimensional (2D) normal distribution and copula-based 2D probability distributions were applied to statistically ...
Bogdan Ozga-Zielinski   +4 more
doaj   +1 more source

Prediksi Ukuran Risiko Agregat Klaim Berbasis Copula pada Model Autoregressive Conditional Amount (ACA)

open access: yesJurnal Matematika Integratif, 2020
Industri asuransi merupakan industri yang berkaitan langsung dengan risiko. Risiko yang terjadi diakibatkan oleh besar klaim yang harus dibayarkan perusahaan asuransi.
Dedy Irawan Prihandoko   +1 more
doaj   +1 more source

Flood routing via a copula-based approach

open access: yesHydrology Research, 2021
Floods are among the most common natural disasters that if not controlled may cause severe damage and high costs. Flood control and management can be done using structural measures that should be designed based on the flood design studies. The simulation
Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

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

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

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

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

Quasi-copulas as linear combinations of copulas

open access: yesFuzzy Sets and Systems
We prove that every quasi-copula can be written as a uniformly converging infinite sum of multiples of copulas. Furthermore, we characterize those quasi-copulas which can be written as a finite sum of multiples of copulas, i.e., that are a linear combination of two copulas.
Gregor Dolinar, Bojan Kuzma, Nik Stopar
openaire   +5 more sources

Realized Copula [PDF]

open access: yesSSRN Electronic Journal, 2012
We introduce the notion of realized copula. Based on assumptions of the marginal distributions of daily stock returns and a copula family, realized copula is defined as the copula structure materialized in realized covariance estimated from within-day high-frequency data.
Matthias R. Fengler, Ostap Okhrin
openaire   +4 more sources

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