Results 11 to 20 of about 18,044 (270)
Scale and shape mixtures of multivariate skew-normal distributions [PDF]
Journal of Multivariate Analysis, 2018 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Reinaldo Boris Arellano-Valle +2 more
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Characteristic functions of scale mixtures of multivariate skew-normal distributions
Journal of Multivariate Analysis, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hyoung-Moon Kim, Marc G. Genton
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Finite mixture modeling using shape mixtures of the skew scale mixtures of normal distributions
Communications in Statistics - Simulation and Computation, 2019 This paper introduces the shape mixtures of the skew scale mixtures of normal distribution which are contained additional shape parameters to regulate skewness and kurtosis. We present a finite mixture model for this new family of distributions, which is a novel model-based tool for clustering heterogeneous data in the presence of skewed and heavy ...
Mostafa Tamandi, Ahad Jamalizadeh
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Analyzing skewed financial data using skew scale-shap mixtures of multivariate normal distributions [PDF]
Journal of Mahani Mathematical ResearchThis paper introduces an innovative family of statistical models called the multivariate skew scale-shape mixtures of normal distributions. These models serve as a versatile tool in statistical analysis by efficiently characterizing the skewed and ...
Mostafa Tamandi, Mehdi Amiri
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Mathematics, 2023 In this paper, we study a new type of distribution that generalizes distributions from the gamma and beta classes that are widely used in applications.
Alexey Kudryavtsev, Oleg Shestakov
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Geosciences, 2023 In geological mapping, maps of K, Th, and U concentrations provided by airborne radiometric surveys are widely used to delineate geological units in tropical regions from the few rare outcrops.
Aïssata Thiam +4 more
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Capillarity and phase-mobility of a hydrocarbon gas–liquid system
Oil & Gas Science and Technology, 2021 When oil fields fall during their lifetime below the bubble point gas comes out of solution. The key questions are at which saturation the gas becomes mobile (“critical gas saturation”) and what the gas mobility is, because mobile gas reduces the ...
Gao Ying +12 more
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Scale Mixtures of Normal Distributions
Journal of the Royal Statistical Society Series B: Statistical Methodology, 1974 Summary This paper presents necessary and sufficient conditions under which a random variable X may be generated as the ratio Z/V where Z and V are independent and Z has a standard normal distribution. This representation is useful in Monte Carlo calculations.
Andrews, D. F., Mallows, C. L.
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Robust Mixture Modeling Based on Two-Piece Scale Mixtures of Normal Family
Axioms, 2019 In this paper, we examine the finite mixture (FM) model with a flexible class of two-piece distributions based on the scale mixtures of normal (TP-SMN) family components. This family allows the development of a robust estimation of FM models.
Mohsen Maleki +2 more
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On the Conditional Variance for Scale Mixtures of Normal Distributions
Journal of Multivariate Analysis, 2000 For a scale mixture of normal vector, X = A1/2G, where X G ∈ Rnand A is a positive variable, independent of the normal vector G, we obtain that the conditional variance covariance, Cov(X2 X1), is always finite a,s for m ≥ 2, where X1∈ Rnand m < n, and remains a.s.
Cambanis, Stamatis +2 more
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