Results 11 to 20 of about 167,791 (166)

Discriminant Functions with Covariance

The Annals of Mathematical Statistics, 1948
This paper discusses the extension of the discriminant function to the case where certain variates (called the covariance variates) are known to have the same means in all populations. Although such variates have no discriminating power by themselves, they may still be utilized in the discriminant function.
Cochran, W. G., Bliss, C. I.
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The application of covariation method to the analysis (comparable) of digital images in cartography

Geodesy and Cartography, 2012
The article discusses research on the identification (comparison) possibilities and accuracy analysis of digital images applying the theory of covariation method.
Jurgita Milieškaitė
doaj   +1 more source

Homogeneidade e heterogeneidade de variância residual em modelos de regressão aleatória sobre o crescimento de caprinos Anglo-Nubianos Homogeneity and heterogeneity of residual variance in random regression models on growth trajectory of Nubian goats

Pesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi comparar modelos de regressão aleatória com diferentes estruturas de variâncias residuais, na estimação dos componentes de covariância e parâmetros genéticos de características de crescimento de caprinos.
José Ernandes Rufino de Sousa, Martinho de Almeida e Silva, José Lindenberg Rocha Sarmento, Wandrick Hauus de Sousa, Maria do Socorro Medeiros de Souza, Angela Beatriz Fridrich   +5 more
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Analysis of code levelling rods calibration accuracy applying covariance functions

Geodesy and Cartography, 2012
An analysis of code levelling rods calibration accuracy applying covariance functions theory is presented. Images of the coded rods are treated by the Matlab 7 computer program.
Jonas Skeivalas, Eimuntas Paršeliūnas, Raimundas Putrimas, Dominykas Šlikas   +3 more
doaj   +1 more source

Two-Dimensional Sampling-Recovery Algorithm of a Realization of Gaussian Processes on the Input and Output of Linear Systems

Entropy, 2020
Based on the application of the conditional mean rule, a sampling-recovery algorithm is studied for a Gaussian two-dimensional process. The components of such a process are the input and output processes of an arbitrary linear system, which are ...
Vladimir Kazakov, Mauro A. Enciso, Francisco Mendoza   +2 more
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Asymptotic normality of the residual correlogram in the continuous-time nonlinear regression model

Modern Stochastics: Theory and Applications, 2020
In a continuous time nonlinear regression model the residual correlogram is considered as an estimator of the stationary Gaussian random noise covariance function.
Alexander Ivanov, Kateryna Moskvychova
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Bivariate covariance functions of Pólya type

Journal of Multivariate Analysis, 2023
We provide sufficient conditions of Pólya type which guarantee the positive definiteness of a $2\times 2$-matrix-valued function in $\mathbb{R}$ and $\mathbb{R}^3$. Several bivariate covariance models have been proposed in literature, where all components of the covariance matrix are of the same parametric family, such as the bivariate Matérn model ...
Olga Moreva, Martin Schlather
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Predição de valores genéticos para a produção de leite no dia do controle e para a produção acumulada até 305 dias Predicting breeding values for test-day records and accumulated 305 day milk yield

Revista Brasileira de Zootecnia, 2005
Foram estimados valores genéticos para as produções de leite no dia do controle de animais da raça Caracu, usando modelo unicaracterístico padrão (TDMO) e modelo de regressão aleatória (MRA).
Lenira El Faro, Lucia Galvão de Albuquerque   +1 more
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Estimação de componentes de co-variância para pesos corporais do nascimento aos 365 dias de idade de bovinos Guzerá empregando-se modelos de regressão aleatória Estimates of covariance components for body weights from birth to 365 days of age in Guzera cattle, using random regression models

Revista Brasileira de Zootecnia, 2009
Um total de 19.770 pesos corporais de bovinos Guzerá, do nascimento aos 365 dias de idade, pertencentes ao banco de dados da Associação Brasileira dos Criadores de Zebu (ABCZ) foi analisado com os objetivos de comparar diferentes estruturas de variâncias
Luciele Cristina Pelicioni, Lucia Galvão de Albuquerque, Sandra Aidar de Queiroz   +2 more
doaj   +1 more source

Beyond the Valley of the Covariance Function

Statistical Science, 2015
Published at http://dx.doi.org/10.1214/15-STS515 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Simpson, Daniel, Lindgren, Finn, Rue, Håvard   +2 more
openaire   +5 more sources