Results 31 to 40 of about 75,997 (278)

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

A Functional for Copulas and Quasi-Copulas [PDF]

open access: yesISRN 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.
openaire   +2 more sources

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

Dynamic distributions and changing copulas [PDF]

open access: yes, 2008
A copula models the relationships between variables independently of their marginal distributions. When the variables are time series, the copula may change over time. A statistical framework is suggested for tracking these changes over time.
Harvey, Andrew C.
core   +3 more sources

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

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

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

Sailing From Penalties to Accountability: Business Strategies and Governance for Firms to Innovate After Environmental Misconduct

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Firms' continuous pursuit of making a profit in the competitive market may ignore the actions related to environmental responsibilities. This set of actions for financial gains constitutes environmental misconduct, which not only harms ecosystems and communities but also brings reputational damage. Negative press and social media amplification
Ashutosh Singh   +3 more
wiley   +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

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