The identification of mediating effects using genome-based restricted maximum likelihood estimation. [PDF]
Mediation analysis is commonly used to identify mechanisms and intermediate factors between causes and outcomes. Studies drawing on polygenic scores (PGSs) can readily employ traditional regression-based procedures to assess whether trait M mediates the ...
Cornelius A Rietveld +2 more
doaj +2 more sources
Reducing computational demands of restricted maximum likelihood estimation with genomic relationship matrices [PDF]
Restricted maximum likelihood estimation of genetic parameters accounting for genomic relationships has been reported to impose computational burdens which typically are many times higher than those of corresponding analyses considering pedigree based ...
Karin Meyer
doaj +2 more sources
Restricted maximum likelihood estimation for animal models using derivatives of the likelihood [PDF]
Cet article decrit une methode d'estimation du maximum de vraisemblance restreinte utilisant les derivees premiere et seconde de la vraisemblance. La methode est basee sur une procedure de differenciation automatique ne necessitant pas l'inversion de grandes matrices.
Smith SP, Meyer K
doaj +3 more sources
Restricted Type II Maximum Likelihood Priors on Regression Coefficients [PDF]
In Bayesian hypothesis testing and model selection, prior distributions must be chosen carefully. For example, setting arbitrarily large prior scales for location parameters, which is common practice in estimation problems, can lead to undesirable behavior in testing (Lindley's paradox).
Peña Pizarro, Víctor, Berger, James O.
openaire +5 more sources
The multilevel regression model is a development of the linear regression model that can be used to analyze data that has a hierarchical structure.
Vera Maya Santi +2 more
doaj +2 more sources
Employing a Monte Carlo algorithm in Newton-type methods for restricted maximum likelihood estimation of genetic parameters. [PDF]
Estimation of variance components by Monte Carlo (MC) expectation maximization (EM) restricted maximum likelihood (REML) is computationally efficient for large data sets and complex linear mixed effects models.
Kaarina Matilainen +4 more
doaj +2 more sources
Performa Restricted Maximum Likelihood and Maximum Likelihood Estimators on Small Area Estimation [PDF]
In this paper, it was studied performance of maximum likelihood and restricted maximum likelihood method to estimate random factor on small area estimation. To evaluate of their performances, it was used mean square error as criteria. Based on data simulation, it was found that mean square error of restricted maximum likelihood estimator smaller than ...
Muhammad Nusrang +3 more
openaire +2 more sources
Restricted maximum likelihood estimation of covariances in sparse linear models [PDF]
This paper surveys the theoretical and computational development of the restricted maximum likelihood (REML) approach for the estimation of covariance matrices in linear stochastic models. A new derivation of this approach is given, valid under very weak conditions on the noise. Then the calculation of the gradient of restricted loglikelihood functions
Groeneveld Eildert, Neumaier Arnold
doaj +3 more sources
The Restricted EM Algorithm for Maximum Likelihood Estimation under Linear Restrictions on the Parameters [PDF]
Abstract The EM algorithm is one of the most powerful algorithms for obtaining maximum likelihood estimates for many incomplete-data problems. But when the parameters must satisfy a set of linear restrictions, the EM algorithm may be too complicated to apply directly.
Jeremy M G Taylor
exaly +5 more sources
Maximum Likelihood and Restricted Likelihood Solutions in Multiple-Method Studies
A formulation of the problem of combining data from several sources is discussed in terms of random effects models. The unknown measurement precision is assumed not to be the same for all methods. We investigate maximum likelihood solutions in this model.
Rukhin, Andrew L.
openaire +3 more sources

