Results 11 to 20 of about 5,025,116 (269)

An Optimal Tail Selection in Risk Measurement [PDF]

open access: yesRisks, 2021
The appropriate choice of a threshold level, which separates the tails of the probability distribution of a random variable from its middle part, is considered to be a very complex and challenging task.
Małgorzata Just, Krzysztof Echaust
doaj   +6 more sources

Optimal heavy tail estimation – Part 1: Order selection [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
The tail probability, P, of the distribution of a variable is important for risk analysis of extremes. Many variables in complex geophysical systems show heavy tails, where P decreases with the value, x, of a variable as a power law with a ...
M. Mudelsee, M. Mudelsee, M. A. Bermejo
doaj   +10 more sources

Value at Risk Estimation Using the GARCH-EVT Approach with Optimal Tail Selection [PDF]

open access: yesMathematics, 2020
A conditional Extreme Value Theory (GARCH-EVT) approach is a two-stage hybrid method that combines a Generalized Autoregressive Conditional Heteroskedasticity (GARCH) filter with the Extreme Value Theory (EVT).
Krzysztof Echaust, Małgorzata Just
doaj   +5 more sources

Linking Pareto-Tail Kernel Goodness-Offit Statistics with Tail Index at Optimal Threshold and Second Order Estimation [PDF]

open access: yesRevstat Statistical Journal, 2008
In this paper the relation between goodness-of-fit testing and the optimal selection of the sample fraction for tail estimation, for instance using Hill’s estimator, is examined.
Yuri Goegebeur   +2 more
doaj   +3 more sources

Optimal heavy tail estimation―Part I: Order selection [PDF]

open access: yes, 2017
Abstract. The tail probability, P, of the distribution of a variable is important for risk analysis of extremes. Many variables in complex geophysical systems show heavy tails, where P decreases with the value, x, of a variable as a power law with characteristic exponent, α.
Manfred Mudelsee, Miguel A. Bermejo
core   +5 more sources

Sustainable development of territorial units: MCDM approach with optimal tail selection

open access: yesEcological Modelling, 2021
Abstract In the face of accelerating climate change, economic instability and limited resources, it is essential to find indicators that better measure the sustainable development of territorial units. Despite ambiguous definitions of sustainable development, numerous studies describe quantitative indicators of sustainable development.
Małgorzata Just, Aleksandra Łuczak
exaly   +2 more sources

Optimal Selection of Active Jet Parameters for a Ducted Tail Wing Aimed at Improving Aerodynamic Performance

open access: yesAerospace
The foldable tail of the box-type launch vehicle poses a risk of mechanical jamming during the launch process, which is not conducive to the smooth completion of the flight mission. The integrated nonfolding ducted tail proposed in this article can solve
Huayu Jia   +3 more
doaj   +2 more sources

Measurement and Calibration of Discrete Element Simulation Parameters of Crushed Sugarcane Tail Leaves [PDF]

open access: yesBioResources, 2022
Discrete element simulation parameters of the tail stem and tail leaves of crushed sugarcane tail leaves (STL) were calibrated by a combination of physical experiments and simulation optimization design.
Junle Lei   +3 more
doaj   +3 more sources

Modeling Contagion of Financial Markets: A GARCH-EVT Copula Approach

open access: yesEngineering Proceedings, 2023
To better assess the financial contagion through the VaR, several recent studies used copula models. In the same context, this paper addresses the inefficiency of the classical approach such as a normal distribution in modeling the tail risk, by using ...
Gueï Cyrille Okou, Amine Amar
doaj   +1 more source

Use of Multivariate Adaptive Regression Splines Algorithm to Predict Body Weight from Body Measurements of Anatolian buffaloes in Türkiye

open access: yesAnimals, 2022
Anatolian buffalo is an important breed reared for meat and milk in various regions of Türkiye. The present study was performed to estimate body weight (BW) from several body measurements, such as tail length (TL), shoulder height (SH), withers height ...
Oğuz Ağyar   +5 more
doaj   +1 more source

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