Results 201 to 210 of about 77,641 (259)

EEG Biomarkers for Affective Disorders Diagnosis: An Evaluation and Validation Study. [PDF]

open access: yesHum Brain Mapp
Zhao S   +8 more
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Nonparametric inferences for kurtosis and conditional kurtosis

Journal of Shanghai University (English Edition), 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xie, Xiaoheng, He, Youhua
openaire   +2 more sources

On Multivariate Skewness and Kurtosis

Theory of Probability and Its Applications, 1994
Summary: Let \(X\) be a \(d\)-dimensional standardized random variable \(({\mathbf E}(X) = 0\), \(\text{cov}(X) = 1)\). Then for a multivariate analogue of skewness \(s = {\mathbf E}(\| X \|^ 2 X)\) and kurtosis \(k = {\mathbf E} XX^ T XX^ T - (d + 2)I\) we show that \(\| s\|^ 2 \leq \text{tr }k + 2d\). For infinitely divisible distributions, \(\| s\|^
Tamás F Móri
exaly   +4 more sources

Kurtosis transformation and kurtosis ordering [PDF]

open access: possible, 2003
Leptokurtic distributions can be generated by applying certain non-linear transformations to a standard normal random variable. Within this work we derive general conditions for these transformations which guarantee that the generated distributions are ordered with respect to the partial ordering of van Zwet for symmetric distributions and the partial ...
Klein, Ingo, Fischer, Matthias J.
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Kurtosis: A Critical Review

The American Statistician, 1988
We critically review the development of the concept of kurtosis. We conclude that it is best to define kurtosis vaguely as the location- and scale-free movement of probability mass from the shoulders of a distribution into its center and tails and to recognize that it can be formalized in many ways.
Balanda K.P., Macgillivray H.L.
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Is Kurtosis Really "Peakedness?"

The American Statistician, 1970
Abstract Kurtosis is best described not as a measure of peakedness versus flatness, as in most texts, but as a measure of unimodality versus bimodality.
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Diffusion Kurtosis Imaging

2016
Diffusion kurtosis imaging (DKI) is a recent imaging method that probes the diffusion of water molecules. Whereas diffusion tensor imaging (DTI) models the diffusion as a 3D Gaussian function, DKI takes it one step further by additionally quantifying the degree of non-Gaussian diffusion.
Veraart, Jelle, Sijbers, Jan
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Characteristics of Kurtosis

The Journal of Experimental Education, 1943
" Given two frequency distributions which have the same variability as measured by the standard deviation, they may be relatively more or less flat-topped than the normal curve. If more flat-topped I term them platy kurtic, if less flat-topped leptokurtic, and if equally flat-topped mesokurtic.
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