Results 1 to 10 of about 1,511,431 (164)

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

A Deep Learning Approach to Upscaling “Low-Quality” MR Images: An In Silico Comparison Study Based on the UNet Framework

open access: yesApplied Sciences, 2022
MR scans of low-gamma X-nuclei, low-concentration metabolites, or standard imaging at very low field entail a challenging tradeoff between resolution, signal-to-noise, and acquisition duration.
Rishabh Sharma   +6 more
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

Performance of Linear Mixed Models to Assess the Effect of Sustained Loading and Variable Temperature on Concrete Beams Strengthened with NSM-FRP

open access: yesSensors, 2021
Although some extended studies about the short-term behavior of NSM FRP strengthened beams have been carried out, there is a lack of knowledge about the behavior of this kind of strengthening under sustained loads and high service temperatures ...
Ricardo Perera   +4 more
doaj   +1 more source

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

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

Estimating the impact of environmental management on strawberry yield using publicly available agricultural data in South Korea [PDF]

open access: yesPeerJ, 2023
Advanced information and communication technologies (ICTs) have made data collection more efficient for agricultural studies. Using publicly available database in South Korea, we estimated the relationship between the management of air temperature and ...
Steven Kim   +4 more
doaj   +2 more sources

Do quality labels change how much we like a product? Evidence from honey consumers [PDF]

open access: yesJournal of Central European Agriculture
This study analyses the joint effects of sensory attributes and quality labels on consumer perception and purchase intention of acacia honey on the Croatian market.
Marija CERJAK   +3 more
doaj   +1 more source

Spatiotemporal mixed effects modeling for the estimation of PM2.5 from MODIS AOD over the Indian subcontinent

open access: yesGIScience & Remote Sensing, 2020
The physical processes associated with the constituents of the troposphere, such as aerosols have an immediate impact on human health. This study employs a novel method to calibrate Aerosol Optical Depth (AOD) obtained from the MODerate resolution ...
S. L. Kesav Unnithan, L. Gnanappazham
doaj   +1 more source

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