Results 21 to 30 of about 276 (185)

Forecasted Scenarios of Regional Wind Farms Based on Regular Vine Copulas

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
Owing to the uncertainty and volatility of wind energy, forecasted wind power scenarios with proper spatio-temporal correlations are needed in various decision-making problems involving power systems.
Zhao Wang   +3 more
doaj   +1 more source

covsim: An R Package for Simulating Non-Normal Data for Structural Equation Models Using Copulas

open access: yesJournal of Statistical Software, 2022
In factor analysis and structural equation modeling non-normal data simulation is traditionally performed by specifying univariate skewness and kurtosis together with the target covariance matrix.
Steffen Grønneberg   +2 more
doaj   +1 more source

Extreme risk spillovers between China and major international stock markets

open access: yesModern Finance, 2023
We examine the complex dependence structure and risk spillovers between the Chinese stock market and twelve major international markets. To this end, we employ three types of vine copulas and tests for the Granger causality in risk of Hong et al. (2009).
Lingling Qian   +2 more
doaj   +1 more source

Bayesian Model Selection of Regular Vine Copulas [PDF]

open access: yesBayesian Analysis, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gruber, Lutz F., Czado, Claudia
openaire   +3 more sources

Nonparametric C- and D-vine-based quantile regression

open access: yesDependence Modeling, 2022
Quantile regression is a field with steadily growing importance in statistical modeling. It is a complementary method to linear regression, since computing a range of conditional quantile functions provides more accurate modeling of the stochastic ...
Tepegjozova Marija   +3 more
doaj   +1 more source

Correlation modeling of multiple wind farms based on piecewise cloud representation and regular vine copulas

open access: yesEnergy Reports, 2020
The accuracy of correlation modeling for multiple wind farms will directly affect the assessment results of absorption capacity in electric utilities. Due to the rapid increase in installed capacity of wind power in recent years, there are often multiple
Kai Qu   +4 more
doaj   +1 more source

Dependence structure across equity sectors: Evidence from vine copulas

open access: yesBorsa Istanbul Review, 2023
Understanding sectoral dynamic dependence across equity indexes is crucial for investment decisions and designing economic policy. This study examines the sectoral dependence among 82 Pakistani companies using a vine copula approach and daily data from ...
Faheem Aslam   +4 more
doaj   +1 more source

The relationship between WIG-subindexes: evidence from the Warsaw Stock Exchange

open access: yesManagerial Economics, 2015
Evidence on links among the major Warsaw Stock Exchange subindexes using daily data from the period of 2011.03.01 to 2014.07.21 is provided in the paper. The empirical study for eleven WIG-sectoral subindexes with 844 observations was conducted by means
Henryk Gurgul, Robert Syrek
doaj   +1 more source

Vine copula based dependence modeling in sustainable finance

open access: yesJournal of Finance and Data Science, 2022
Climate change and sustainability have become societal focal points in the last decade. Consequently, companies have been increasingly characterized by non-financial information, such as environmental, social, and governance (ESG) scores, based on which ...
Claudia Czado   +5 more
doaj   +1 more source

A New Wind Speed Scenario Generation Method Based on Principal Component and R-Vine Copula Theories

open access: yesEnergies, 2022
The intermittent and uncertain properties of wind power have presented enormous obstacles to the planning and steady operation of power systems. In this context, as an effective technique to study wind power uncertainty, the development of an accurate ...
Hui Hwang Goh   +6 more
doaj   +1 more source

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