Results 31 to 40 of about 23,045 (305)

The Skew Normal multivariate risk measurement framework [PDF]

Computational Management Science, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mauro Bernardi, Roy Cerqueti, Arsen Palestini   +2 more
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PREDICTING THE DEPOSITIONAL ENVIRONMENTS AND TRANSPORTATION MECHANISMS OF SEDIMENTS USING GRANULOMETRIC PARAMETERS, BIVARIATE AND MULTIVARIATE ANALYSES

GeoScience Engineering, 2019
Grain size distribution and classes present in sedimentary rocks are responsive to the physical changes of the transporting media and the basin of deposition.
P. R. IKHANE, O.V. OLADIPO, O.O. OYEBOLU
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Cumulants of Multivariate Symmetric and Skew Symmetric Distributions [PDF]

Symmetry, 2021
This paper provides a systematic and comprehensive treatment for obtaining general expressions of any order, for the moments and cumulants of spherically and elliptically symmetric multivariate distributions; results for the case of multivariate t-distribution and related skew-t distribution are discussed in some detail.
Sreenivasa Rao Jammalamadaka, Emanuele Taufer, György H. Terdik   +2 more
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covsim: An R Package for Simulating Non-Normal Data for Structural Equation Models Using Copulas

Journal of Statistical Software, 2022
In factor analysis and structural equation modeling non-normal data simulation is traditionally performed by specifying univariate skewness and kurtosis together with the target covariance matrix.
Steffen Grønneberg, Njål Foldnes, Katerina M. Marcoulides   +2 more
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Skewness for multivariate distributions: two approaches

The Annals of Statistics, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Avérous, Jean, Meste, Michel
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Quantifying the impact of addressing data challenges in prediction of length of stay

BMC Medical Informatics and Decision Making, 2021
Background Prediction of length of stay (LOS) at admission time can provide physicians and nurses insight into the illness severity of patients and aid them in avoiding adverse events and clinical deterioration.
Amin Naemi, Thomas Schmidt, Marjan Mansourvar, Ali Ebrahimi, Uffe Kock Wiil   +4 more
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A Neural Network Based on the Johnson S_U Translation System and Related Application to Electromyogram Classification

IEEE Access, 2021
Electromyogram (EMG) classification is a key technique in EMG-based control systems. Existing EMG classification methods, which do not consider EMG features that have distribution with skewness and kurtosis, have limitations such as the requirement to ...
Hideaki Hayashi, Taro Shibanoki, Toshio Tsuji   +2 more
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A method to simulate multivariate outliers with known mahalanobis distances for normal and non-normal data

Methods in Psychology
Monte Carlo simulations and theoretical analyses have repeatedly demonstrated the impact of outliers on statistical analysis. Most simulation studies generate outliers using one of two general approaches: by multiplying an arbitrary point by a constant ...
Oscar L. Olvera Astivia
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Assessment of survival in patients with idiopathic pulmonary fibrosis using quantitative HRCT indexes

Multidisciplinary Respiratory Medicine, 2018
Background The assessment of Idiopathic Pulmonary Fibrosis (IPF) using HRCT requires great experience and is limited by a significant inter-observer variability, even between trained radiologists.
Sebastiano Emanuele Torrisi, Stefano Palmucci, Alessandro Stefano, Giorgio Russo, Alfredo Gaetano Torcitto, Daniele Falsaperla, Mauro Gioè, Mauro Pavone, Ada Vancheri, Gianluca Sambataro, Domenico Sambataro, Letizia Antonella Mauro, Emanuele Grassedonio, Antonio Basile, Carlo Vancheri   +14 more
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Multivariate geometric skew-normal distribution [PDF]

Statistics, 2017
Azzalini (1985) introduced a skew-normal distribution of which normal distribution is a special case. Recently Kundu (2014) introduced a geometric skew-normal distribution and showed that it has certain advantages over Azzalini's skew-normal distribution. In this paper we discuss about the multivariate geometric skew-normal distribution. It can be used
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