Results 271 to 280 of about 807,423 (305)

Coarse Grained Scale of Turbulent Mixtures

Physical Review Letters, 2006
What is the physical length scale which supports the concentration content in a stirred mixture? Among the length scales familiar in stirred mixtures is the dissipation scale which equilibrates substrate deformation and diffusive smearing rates. That scale is a decreasing function of the deformation rate and is, thus, a decreasing function of the ...
Villermaux, Emmanuel, Duplat, Jérôme
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SCALE MIXTURES DISTRIBUTIONS IN STATISTICAL MODELLING

Australian & New Zealand Journal of Statistics, 2008
SummaryThis paper presents two types of symmetric scale mixture probability distributions which include the normal, Student t, Pearson Type VII, variance gamma, exponential power, uniform power and generalized t (GT) distributions. Expressing a symmetric distribution into a scale mixture form enables efficient Bayesian Markov chain Monte Carlo (MCMC ...
Choy, S. T. Boris, Chan, Jennifer S. K.
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Semiparametric mixture of linear regressions with nonparametric Gaussian scale mixture errors

Advances in Data Analysis and Classification, 2023
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Sangkon Oh, Byungtae Seo
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Multivariate Scale Mixture of Gaussians Modeling

2006
In this paper, we present an approach to generate a class of multivariate probability models, which are referred to as scale mixture of Gaussians models. They are constructed as normal variance mixture models, in which the covariance matrix involves a stochastic scale factor with a given prior distribution.
Torbjørn Eltoft, Taesu Kim, Te-Won Lee
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When a Scale Mixture is Equivalent with Rescaling

Journal of Mathematical Sciences, 2002
If random variables \(X\) and \(Y\) have the same distribution, we will write \(X\overset\text{d}=Y\). The author is interested in characterizing independent random variables \(X\) and \(\Theta\) such that for some real constant \(c\) the following equality holds: \(X\Theta\overset\text{d}=cX\).
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A Scale Mixture Approach to t-Distributed Mixture Regression

2020
Mixture of linear regressions frequently assume Gaussian distributions for the mixture components. Data from many applications follows leptokurtic and platykurtic shapes. The use of scale mixtures of distributions from the exponential family (SME) of distributions is considered due to its ability to provide more flexibility in the tail behaviour of a ...
Frans Kanfer, Sollie Millard
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Geometric scale mixtures of normal distributions

Journal of Multivariate Analysis
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Deepak Prajapati, Sobhan Shafiei, Debasis Kundu, Ahad Jamalizadeh   +3 more
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Exploring Pareto scale mixtures

AIP Conference Proceedings, 2012
Pareto scale mixtures can be used to obtain distributions with heavier tails. An explanation of this model properties is provided, together with a discussion about the parameters estimation. Finally, a real data application is presented, consisting in the larger earthquakes seismic moment modeling.
Miguel Felgueiras, Rui Santos
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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, Tsung-I Lin, Geoffrey J. McLachlan   +2 more
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Scaling and crossover in a fermion-boson mixture

Physical Review B, 1988
Thermodynamic behavior of a mixture of weakly interacting fermions and bosons is investigated in 4-\ensuremath{\epsilon} dimensions by the renormalization-group method with the purpose of studying scaling and crossover properties of the system in the tricritical region.
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