Results 61 to 70 of about 685,977 (197)

Model Comparison of Coordinate-Free Multivariate Skewed Distributions with an Application to Stochastic Frontiers [PDF]

open access: yes
We consider classes of multivariate distributions which can model skewness and are closed under orthogonal transformations. We review two classes of such distributions proposed in the literature and focus our attention on a particular, yet quite flexible,
Jose T.A.S. Ferreira, Mark F.J. Steel
core  

Applied Multivariate Research, v.13 no.2 (complete version) [PDF]

open access: yes, 2010
The second issue of Applied Multivariate Research edited by Dennis L. JacksonDigitized and published in SOAR:Shocker Open Access Repository by Wichita State University Libraries Technical Services.The effects of estimator choice and weighting strategies ...

core   +1 more source

Evaluating Agreement Among Multiple Methods With Replicated Measurements Using Scale Mixtures of Skew-Normal Measurement Error Models

open access: yesJournal of Probability and Statistics
This paper introduces a robust parametric approach for assessing the agreement among multiple measurement methods when dealing with replicated data from a continuous variable.
Jeevana Duwarahan   +1 more
doaj   +1 more source

Multivariate measures of skewness and kurtosis for skew-elliptical distributions

open access: yesCommunications in Statistics - Theory and Methods
This article examines eight measures of skewness and the Mardia measure of kurtosis for skew-elliptical distributions. Multivariate measures of skewness considered include Mardia, Malkovich-Afifi, Isogai, Song, Balakrishnan-Brito-Quiroz, Móri-Rohatgi-Székely, Kollo, and Srivastava measures.
Zuo, Baishuai   +2 more
openaire   +1 more source

CircNNTSR: An R Package for the Statistical Analysis of Circular, Multivariate Circular, and Spherical Data Using Nonnegative Trigonometric Sums

open access: yesJournal of Statistical Software, 2016
The statistical analysis of circular, multivariate circular, and spherical data is very important in different areas, such as paleomagnetism, astronomy and biology.
Juan José Fernández-Durán   +1 more
doaj   +1 more source

Applied Multivariate Research, v.12 no.3 (complete version)

open access: yes, 2007
The third issue of Applied Multivariate Research edited by Dennis L. JacksonThe article "Cluster analysis and rankings of Canadian universities: Misadventures with rank-based data and implications for the welfare of students" by Kenneth M.

core   +1 more source

The clinical value of DKI histogram parameter metrics predicting survival in patients with locally advanced rectal cancer 

open access: yes肿瘤影像学, 2022
Objective: To determine histogram analysis of diffusion kurtosis imaging (DKI) in evaluating the prognostic factors for a locally advanced rectal cancer (LARC) treated with neoadjuvant chemoradiation therapy (NCRT).
SUN Yiqun   +5 more
doaj  

The Law of the Minimum and Sources of Nonzero Skewness for Crop Yield Distributions [PDF]

open access: yes
Crop yields are not commonly found to be normally distributed, but the cause of the non-normal distribution is unclear. The non-normality might be due to weather variables and/or an underlying von Liebig law of the minimum (LoM) production function.
Tumusiime, Emmanuel   +2 more
core  

A Treatment of Multivariate Skewness, Kurtosis, and Related Statistics

open access: yesJournal of Multivariate Analysis, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

A Flexible Bayesian Semi-Parametric Multivariate Mixed-Effect Model Framework for Skewed Longitudinal Data

open access: yesMathematics
While existing mixed-effects models address multivariate outcomes, nonlinearity, or non-normality separately, their joint integration remains limited in medical research.
Mequanent Wale Mekonen   +5 more
doaj   +1 more source

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