Results 11 to 20 of about 14,405,507 (294)

Alpha-Skew Generalized t Distribution

open access: yesRevista Colombiana de Estadística, 2015
The alpha-skew normal (ASN) distribution has been proposed recently in the literature by using standard normal distribution and a skewing approach. Although ASN distribution is able to model both skew and bimodal data, it is shortcoming when data has ...
SUKRU ACITAS   +2 more
doaj   +2 more sources

An Information-Theoretic Approach for Multivariate Skew-t Distributions and Applications

open access: yesMathematics, 2021
Shannon and Rényi entropies are two important measures of uncertainty for data analysis. These entropies have been studied for multivariate Student-t and skew-normal distributions.
Salah H. Abid   +2 more
doaj   +1 more source

Bimodal extension based on the skew-$t$-normal distribution [PDF]

open access: yesBrazilian Journal of Probability and Statistics, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Amiri, Mehdi   +3 more
openaire   +2 more sources

Differential models of twin correlations in skew for body-mass index (BMI). [PDF]

open access: yesPLoS ONE, 2018
BACKGROUND:Body Mass Index (BMI), like most human phenotypes, is substantially heritable. However, BMI is not normally distributed; the skew appears to be structural, and increases as a function of age.
Siny Tsang   +3 more
doaj   +1 more source

SKEW NORMAL AND SKEW STUDENT-T DISTRIBUTIONS ON GARCH(1,1) MODEL

open access: yesMedia Statistika, 2021
The Generalized AutoRegressive Conditional Heteroskedasticity (GARCH) type models have become important tools in financial application since their ability to estimate the volatility of financial time series data.
Didit Budi Nugroho   +2 more
doaj   +1 more source

Inference for grouped data with a truncated skew-Laplace distribution [PDF]

open access: yes, 2010
The skew-Laplace distribution has been used for modelling particle size with point observations. In reality, the observations are truncated and grouped (rounded).
Rubio, Francisco J., Steel, Mark F. J.
core   +1 more source

Modeling Insurance Claims Distribution through Combining Generalized Hyperbolic Skew-t Distribution with Extreme Value Theory [PDF]

open access: yesتحقیقات مالی, 2016
This paper examines whether combining Generalized Hyperbolic Skew-t distribution, recently introduced in the field of insurance, and Extreme Value Theory (EVT) could result in a modeling of loss function that could model central value as well as extreme ...
Saeed Bajalan   +2 more
doaj   +1 more source

A matrix variate skew‐t distribution [PDF]

open access: yesStat, 2017
Although there is ample work in the literature dealing with skewness in the multivariate setting, there is a relative paucity of work in the matrix variate paradigm. Such work is, for example, useful for modelling three‐way data. A matrix variate skew‐t distribution is derived based on a mean‐variance matrix normal mixture.
Michael P.B. Gallaugher   +1 more
openaire   +3 more sources

On the Canonical Form of Scale Mixtures of Skew-Normal Distributions

open access: yesStatistica, 2020
The canonical form of scale mixtures of multivariate skew-normal distribution is defined, emphasizing its role in summarizing some key properties of this class of distributions.
Antonella Capitanio
doaj   +1 more source

Skew t Mixture Latent State-Trait Analysis: A Monte Carlo Simulation Study on Statistical Performance

open access: yesFrontiers in Psychology, 2018
This simulation study assessed the statistical performance of a skew t mixture latent state-trait (LST) model for the analysis of longitudinal data. The model aims to identify interpretable latent classes with class-specific LST model parameters.
Louisa Hohmann   +2 more
doaj   +1 more source

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