Results 211 to 220 of about 1,064 (251)

Hierarchical models with scale mixtures of normal distributions

open access: yesTest, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Choy, S. T. B., Smith, A. F. M.
openaire   +2 more sources

On the inevitability of a paradox in shrinkage estimation for scale mixtures of normals

Journal of Statistical Planning and Inference, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
William E Strawderman
exaly   +3 more sources

Characterizing and Approximating Infinite Scale Mixtures of Normals

Communications in Statistics - Theory and Methods, 2006
The purpose of this study is to approximate and identify infinite scale mixtures of normals, SMN. A new method for approximating any infinite SMN with a known mixing measure by a finite SMN is presented. In the new method, the modulus of continuity of the normal family as a function of the scale is used to discretize the mixing measure.
exaly   +2 more sources

Bayesian scale mixtures of normals linear regression and Bayesian quantile regression with big data and variable selection [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2023
Quantile regression, which estimates various conditional quantiles of a response variable, including the median (0.5th quantile), is particularly useful when the conditional distribution is asymmetric or heterogeneous or fat-tailed or truncated. Bayesian
Keming Yu, Yuanqi Chu
exaly   +2 more sources

Multivariate location–scale mixtures of normals and mean–variance–skewness portfolio allocation

open access: yesJournal of Econometrics, 2009
We show that the distribution of any portfolio whose components jointly follow a location-scale mixture of normals can be characterised solely by its mean, variance and skewness.
Javier Mencía, Enrique Sentana
exaly   +3 more sources

Using Scale Mixtures Of Normals To Model Continuously Compounded Returns

open access: yesJournal of Modern Applied Statistical Methods, 2005
A new method for estimating the parameters of scale mixtures of normals (SMN) is introduced and evaluated. The new method is called UNMIX and is based on minimizing the weighted square distance between exact values of the density of the scale mixture and
Dardia, Kristen   +7 more
exaly   +3 more sources

Mixtures of factor analyzers with scale mixtures of fundamental skew normal distributions

Advances in Data Analysis and Classification, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sharon X. Lee   +2 more
openaire   +5 more sources

On multivariate selection scale-mixtures of normal distributions

Brazilian Journal of Probability and Statistics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Roozegar, Roohollah   +3 more
openaire   +1 more source

Inference in Two-Piece Location-Scale Models with Jeffreys Priors [PDF]

open access: yesBayesian Analysis, 2014
This paper addresses the use of Jeffreys priors in the context of univariate three-parameter location-scale models, where skewness is introduced by differing scale parameters either side of the location.
FRANCISCO J Rubio, Mark F J Steel
exaly   +2 more sources

Dimension-wise scaled normal mixtures with application to finance and biometry

Journal of Multivariate Analysis, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Antonio Punzo, Luca Bagnato
openaire   +2 more sources

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