Results 1 to 10 of about 1,511,446 (161)

Tree Height Prediction Using a Double Hidden-Layer Neural Network and a Mixed-Effects Model [PDF]

open access: yesPlants
The double hidden-layer neural network has increasingly been applied in tree height modeling due to its superior performance. To improve the precision of tree height estimation, this study compared the performance of a double hidden-layer neural network ...
Jianbo Shen   +4 more
doaj   +2 more sources

A Method to Explore the Best Mixed-Effects Model in a Data-Driven Manner with Multiprocessing: Applications in Public Health Research [PDF]

open access: yesEuropean Journal of Investigation in Health, Psychology and Education
In the present study, I developed and tested an R module to explore the best models within the context of multilevel modeling in research in public health. The module that I developed, explore.models, compares all possible candidate models generated from
Hyemin Han
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

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

ARZIMM: A Novel Analytic Platform for the Inference of Microbial Interactions and Community Stability from Longitudinal Microbiome Study

open access: yesFrontiers in Genetics, 2022
Dynamic changes of microbiome communities may play important roles in human health and diseases. The recent rise in longitudinal microbiome studies calls for statistical methods that can model the temporal dynamic patterns and simultaneously quantify the
Linchen He   +7 more
doaj   +1 more source

Mixed effects envelope models

open access: yesStat, 2020
When multiple measures are collected repeatedly over time, redundancy typically exists among responses. The envelope method was recently proposed to reduce the dimension of responses without loss of information in regression with multivariate responses. It can gain substantial efficiency over the standard least squares estimator.
Yuyang Shi, Linquan Ma, Lan Liu
openaire   +3 more sources

Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection. [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2015
Applying linear mixed effects regression (LMER) models to psycholinguistic data was made popular by Baayen, Davidson, and Bates (2008). However, applied researchers sometimes encounter model specification difficulties when using such models.
Hsiu-Ting Yu
doaj   +2 more sources

Nested Spatial and Temporal Modeling of Environmental Conditions Associated With Genetic Markers of Vibrio parahaemolyticus in Washington State Pacific Oysters

open access: yesFrontiers in Microbiology, 2022
The Pacific Northwest (PNW) is one of the largest commercial harvesting areas for Pacific oysters (Crassostrea gigas) in the United States. Vibrio parahaemolyticus, a bacterium naturally present in estuarine waters accumulates in shellfish and is a major
Brendan Fries   +9 more
doaj   +1 more source

One-factor model for default rates by loan type [PDF]

open access: yesBankarstvo, 2021
This paper investigates the link between default rates by loan types and the systemic credit risk component. This link is described by a linear model that combines systemic and idiosyncratic contributions.
Božović Miloš
doaj   +1 more source

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