Results 21 to 30 of about 47,282 (299)

Samsun Koşullarında Geliştirilen Çeşit Adayı Mısırların Verim Öğelerinin Belirlenmesi ve Stabilite Analizi

open access: yesJournal of Agricultural Sciences, 2003
Bu araştırmada İvesi ırkı kuzularda doğum ağırlığına ait kalıtım derecesinin tahmininde baba familya sayısının etkisi araştırılmıştır. Doğum ağırlığına ait veriler 17 baş damızlık koça ait 1062 baş tekiz kuzudan elde edilmiştir.
Ahmet Öz
doaj   +1 more source

Efficient ReML inference in variance component mixed models using a Min-Max algorithm.

open access: yesPLoS Computational Biology, 2022
Since their introduction in the 50's, variance component mixed models have been widely used in many application fields. In this context, ReML estimation is by far the most popular procedure to infer the variance components of the model.
Fabien Laporte   +2 more
doaj   +1 more source

Copula miss-specification in REML multivariate genetic animal model estimation

open access: yesGenetics Selection Evolution, 2022
Background In animal genetics, linear mixed models are used to deal with genetic and environmental effects. The variance and covariance terms of these models are usually estimated by restricted maximum likelihood (REML), which provides unbiased ...
Tom Rohmer, Anne Ricard, Ingrid David
doaj   +1 more source

Regularization for Generalized Additive Mixed Models by Likelihood-Based Boosting [PDF]

open access: yes, 2011
With the emergence of semi- and nonparametric regression the generalized linear mixed model has been expanded to account for additive predictors. In the present paper an approach to variable selection is proposed that works for generalized additive mixed
Groll, Andreas, Tutz, Gerhard
core   +2 more sources

A new approach fits multivariate genomic prediction models efficiently

open access: yesGenetics Selection Evolution, 2022
Background Fast, memory-efficient, and reliable algorithms for estimating genomic estimated breeding values (GEBV) for multiple traits and environments are needed to make timely decisions in breeding.
Alencar Xavier, David Habier
doaj   +1 more source

Predicted Residual Error Sum of Squares of Mixed Models: An Application for Genomic Prediction. [PDF]

open access: yes, 2017
Genomic prediction is a statistical method to predict phenotypes of polygenic traits using high-throughput genomic data. Most diseases and behaviors in humans and animals are polygenic traits. The majority of agronomic traits in crops are also polygenic.
Xu, Shizhong
core   +2 more sources

Estimation of genetic parameters of Wood’s lactation curve parameters using Bayesian and REML methods for milk production trait of Holstein dairy cattle

open access: yesJournal of Applied Animal Research, 2022
Bayesian and average information restricted maximum likelihood (AI-REML) approaches were used to estimate variance components and genetic parameters of Wood’s lactation curve parameters of milk production traits in three lactations of Iranian Holstein ...
Keyvan Radjabalizadeh   +3 more
doaj   +1 more source

Derivative Computations and Robust Standard Errors for Linear Mixed Effects Models in lme4 [PDF]

open access: yes, 2017
While robust standard errors and related facilities are available in R for many types of statistical models, the facilities are notably lacking for models estimated via lme4.
Merkle, Edgar C., Wang, Ting
core   +3 more sources

Penalized additive regression for space-time data: a Bayesian perspective [PDF]

open access: yes, 2003
We propose extensions of penalized spline generalized additive models for analysing space-time regression data and study them from a Bayesian perspective.
Fahrmeir, Ludwig   +2 more
core   +3 more sources

Differential Privacy Applications to Bayesian and Linear Mixed Model Estimation [PDF]

open access: yes, 2012
We consider a particular maximum likelihood estimator (MLE) and a computationally-intensive Bayesian method for differentially private estimation of the linear mixed-effects model (LMM) with normal random errors.
Abowd, John M.   +2 more
core   +3 more sources

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