Results 11 to 20 of about 18,910,981 (254)

Genetic heterogeneity of residual variance - estimation of variance components using double hierarchical generalized linear models [PDF]

open access: yesGenetics Selection Evolution, 2010
Background The sensitivity to microenvironmental changes varies among animals and may be under genetic control. It is essential to take this element into account when aiming at breeding robust farm animals.
Fikse Freddy   +4 more
doaj   +2 more sources

Variable Selection for Generalized Linear Mixed Models by L1-Penalized Estimation [PDF]

open access: yes, 2011
Generalized linear mixed models are a widely used tool for modeling longitudinal data. However, their use is typically restricted to few covariates, because the presence of many predictors yields unstable estimates.
Groll, Andreas
core   +3 more sources

A general approach to mixed effects modeling of residual variances in generalized linear mixed models

open access: yesGenetics Selection Evolution, 2005
We propose a general Bayesian approach to heteroskedastic error modeling for generalized linear mixed models (GLMM) in which linked functions of conditional means and residual variances are specified as separate linear combinations of fixed and random ...
Kizilkaya Kadir, Tempelman Robert J
doaj   +1 more source

The geometry of the lactation curve based on Wood's equation: a two-step prediction

open access: yesRevista Brasileira de Zootecnia, 2020
Lactation records from cows of the southwestern Paraná state, Brazil, form the dataset of this study. We applied the information-theoretic approach to evaluate the ability of the nonlinear Wood, Brody, Dijkstra, and Gamma functions to fit to these data ...
Jhone Gleison de Oliveira   +6 more
doaj   +1 more source

Analysis of neonatal clinical trials with twin births

open access: yesBMC Medical Research Methodology, 2009
Background In neonatal trials of pre-term or low-birth-weight infants, twins may represent 10–20% of the study sample. Mixed-effects models and generalized estimating equations are common approaches for handling correlated continuous or binary data ...
Shaffer Michele L   +2 more
doaj   +1 more source

Modeling Linguistic Variables With Regression Models: Addressing Non-Gaussian Distributions, Non-independent Observations, and Non-linear Predictors With Random Effects and Generalized Additive Models for Location, Scale, and Shape

open access: yesFrontiers in Psychology, 2018
As statistical approaches are getting increasingly used in linguistics, attention must be paid to the choice of methods and algorithms used. This is especially true since they require assumptions to be satisfied to provide valid results, and because ...
Christophe Coupé
doaj   +1 more source

Conditional Model Selection in Mixed-Effects Models with cAIC4

open access: yesJournal of Statistical Software, 2021
Model selection in mixed models based on the conditional distribution is appropriate for many practical applications and has been a focus of recent statistical research.
Benjamin Säfken   +3 more
doaj   +1 more source

A guide to developing resource selection functions from telemetry data using generalized estimating equations and generalized linear mixed models

open access: yesRangifer, 2012
Resource selection functions (RSF) are often developed using satellite (ARGOS) or Global Positioning System (GPS) telemetry datasets, which provide a large amount of highly correlated data.
Nicola Koper, Micheline Manseau
doaj   +1 more source

Generalized linear models [PDF]

open access: yes, 1972
The technique of iterative weighted linear regression can be used to obtain maximum likelihood estimates of the parameters with observations distributed according to some exponential family and systematic effects that can be made linear by a suitable ...
Nelder, J. A., Wedderburn, R. W. M.
core   +1 more source

Scale and Sensitivity of Songbird Occurrence to Landscape Structure in a Harvested Boreal Forest

open access: yesAvian Conservation and Ecology, 2005
To explore the spatial scales at which boreal forest birds respond to landscape structure and how those responses are influenced by forest harvest, we quantified the relationship between amounts of forest in the landscape at multiple spatial scales and ...
Philip D. Taylor, Meg A. Krawchuk
doaj   +1 more source

Home - About - Disclaimer - Privacy