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Fixed or random? On the reliability of mixed‐effects models for a small number of levels in grouping variables [PDF]

open access: yesEcology and Evolution, 2022
Biological data are often intrinsically hierarchical (e.g., species from different genera, plants within different mountain regions), which made mixed‐effects models a common analysis tool in ecology and evolution because they can account for the non ...
Johannes Oberpriller   +2 more
doaj   +2 more sources

Understanding Mixed-Effects Models Through Data Simulation

open access: yesAdvances in Methods and Practices in Psychological Science, 2021
Experimental designs that sample both subjects and stimuli from a larger population need to account for random effects of both subjects and stimuli using mixed-effects models.
Lisa M. DeBruine, Dale J. Barr
doaj   +2 more sources

Model Specification in Mixed-Effects Models

open access: yesCommunications in Kinesiology, 2023
Mixed-effect models are flexible tools for researchers in a myriad of fields, but that flexibility comes at the cost of complexity and if users are not careful in how their model is specified, they could be making faulty inferences from their data.
Keith Lohse   +2 more
doaj   +3 more sources

Coefficients of Determination for Mixed-Effects Models. [PDF]

open access: yesJ Agric Biol Environ Stat, 2022
The coefficient of determination is well defined for linear models and its extension is long wanted for mixed-effects models. We revisit its extension to define measures for proportions of variation explained by the whole model, fixed effects only, and random effects only.
Zhang D.
europepmc   +3 more sources

Fiducial Inference in Linear Mixed-Effects Models [PDF]

open access: yesEntropy
We develop a novel framework for fiducial inference in linear mixed-effects (LME) models, with the standard deviation of random effects reformulated as coefficients.
Jie Yang   +3 more
doaj   +2 more sources

Mixed‐effects models and the drug titration paradox [PDF]

open access: yesCPT: Pharmacometrics & Systems Pharmacology, 2023
Charles F. Minto, Thomas W. Schnider
doaj   +2 more sources

Mixed effects regression models in forestry research [PDF]

open access: yesСибирский лесной журнал, 2021
A promising method for finding patterns in experimental data is regression models of mixed effects, which have not found wide application in forest science in Russia to date.
A. V. Lebedev, V. V. Kuzmichev
doaj   +1 more source

Mixed-effect models with trees

open access: yesAdvances in Data Analysis and Classification, 2022
AbstractTree-based regression models are a class of statistical models for predicting continuous response variables when the shape of the regression function is unknown. They naturally take into account both non-linearities and interactions. However, they struggle with linear and quasi-linear effects and assume iid data.
Anna Gottard   +3 more
openaire   +4 more sources

Decentralized Mixed Effects Modeling in COINSTAC

open access: yesNeuroinformatics, 2023
Abstract Performing group analysis on magnetic resonance imaging (MRI) data with linear mixed-effects (LME) models is challenging due to its large dimensionality and inherent multi-level covariance structure. In addition, as large-scale collaborative projects become commonplace in neuroimaging, data must increasingly ...
Sunitha Basodi   +7 more
openaire   +2 more sources

Invited review: Recursive models in animal breeding: Interpretation, limitations, and extensions

open access: yesJournal of Dairy Science, 2023
: Structural equation models allow causal effects between 2 or more variables to be considered and can postulate unidirectional (recursive models; RM) or bidirectional (simultaneous models) causality between variables.
L. Varona, O. González-Recio
doaj   +1 more source

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