Results 11 to 20 of about 21,872 (265)
Frontiers in Oncology, 2021 PurposeNeuroendocrine tumors (NET) are rare cancers with variable behavior. A better understanding of prognosis would aid individualized management. The aim of this hypothesis-generating pilot study was to investigate the prognostic potential of tumor ...
Charlotte Atkinson +7 more
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The multivariate skew-normal distribution [PDF]
Biometrika, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
AZZALINI, ADELCHI +1 more
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A New Goodness of Fit Test for Multivariate Normality and Comparative Simulation Study
Mathematics, 2021 The testing of multivariate normality remains a significant scientific problem. Although it is being extensively researched, it is still unclear how to choose the best test based on the sample size, variance, covariance matrix and others.
Jurgita Arnastauskaitė +2 more
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Signatures of Eurasian heat waves in global Rossby wave spectra [PDF]
Weather and Climate Dynamics, 2022 This paper investigates systematic changes in the global atmospheric circulation statistics during Eurasian heat waves (HWs). The investigation of Rossby wave energy anomalies during HWs is based on the time series of Hough expansion coefficients ...
I. Strigunova +3 more
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Finite Mixtures of Multivariate Skew Laplace Distributions
Revstat Statistical Journal, 2021 This paper proposes finite mixtures of multivariate skew Laplace distributions in order to model both skewness and heavy-tailedness in heterogeneous data sets.
Fatma Zehra Doğru +2 more
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On the singularity of multivariate skew-symmetric models [PDF]
Journal of Multivariate Analysis, 2010 Using a colloquial style and awkward notation, the authors first solve the problem of characterizing the symmetric kernels leading to singular Fisher information matrices in the vicinity of symmetry for a class of multivariate skew-symmetric distributions.
Christophe Ley, Davy Paindaveine
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Radiation Oncology, 2023 Background Multiparametric imaging has been seen as a route to improved prediction of chemoradiotherapy treatment outcomes. Four-dimensional volumetric perfusion CT (4D PCT) is useful for whole-organ perfusion measurement, as it reflects the ...
Hirokazu Tsuchiya +6 more
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The multivariate asymmetric slash Laplace distribution and its applications
Statistica, 2013 We have introduced a multivariate asymmetric-slash Laplace distribution, a flexible distribution that can take skewness and heavy tails into account. This distribution is useful in simulation studies where it can introduce distributional challenges in ...
Bindu Punathumparambath
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Uncertainty in Economic Policies and Stock Price Crash Risk Companies Listed in Tehran Stock Exchange [PDF]
International Journal of Business and Development Studies, 2022 The purpose of this study was to examine the effect of uncertainty in economic policy on the stock price crash risk. In this applied descriptive-analytical ex post facto study, the statistical population included the companies listed on the Tehran Stock ...
Leila Zamani +2 more
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On the Canonical Form of Scale Mixtures of Skew-Normal Distributions
Statistica, 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
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