Results 1 to 10 of about 208,500 (161)

The Estimation of Item Response Models with the lmer Function from the lme4 Package in R [PDF]

open access: yesJournal of Statistical Software, 2011
In this paper we elaborate on the potential of the lmer function from the lme4 package in R for item response (IRT) modeling. In line with the package, an IRT framework is described based on generalized linear mixed modeling. The aspects of the framework
Paul De Boeck   +6 more
doaj   +1 more source

Regularization Paths for Generalized Linear Models via Coordinate Descent [PDF]

open access: yesJournal of Statistical Software, 2010
We develop fast algorithms for estimation of generalized linear models with convex penalties. The models include linear regression, two-class logistic regression, and multi- nomial regression problems while the penalties include ℓ1 (the lasso), ℓ2 (ridge
Jerome Friedman   +2 more
doaj   +1 more source

In Search of Complex Disease Risk through Genome Wide Association Studies

open access: yesMathematics, 2021
The identification and characterisation of genomic changes (variants) that can lead to human diseases is one of the central aims of biomedical research.
Lorena Alonso   +3 more
doaj   +1 more source

Elastic Net Regularization Paths for All Generalized Linear Models

open access: yesJournal of Statistical Software, 2023
The lasso and elastic net are popular regularized regression models for supervised learning. Friedman, Hastie, and Tibshirani (2010) introduced a computationally efficient algorithm for computing the elastic net regularization path for ordinary least ...
J. Kenneth Tay   +2 more
doaj   +1 more source

Inference in skew generalized t-link models for clustered binary outcome via a parameter-expanded EM algorithm.

open access: yesPLoS ONE, 2021
Binary Generalized Linear Mixed Model (GLMM) is the most common method used by researchers to analyze clustered binary data in biological and social sciences.
Chénangnon Frédéric Tovissodé   +2 more
doaj   +1 more source

Generalized linear mixed models can detect unimodal species-environment relationships [PDF]

open access: yesPeerJ, 2013
Niche theory predicts that species occurrence and abundance show non-linear, unimodal relationships with respect to environmental gradients. Unimodal models, such as the Gaussian (logistic) model, are however more difficult to fit to data than linear ...
Tahira Jamil, Cajo J.F. ter Braak
doaj   +2 more sources

Comparison of Logistic Regression and Generalized Linear Model for Identifying Accurate At – Risk Students [PDF]

open access: yesAlinteri Journal of Agriculture Sciences, 2021
Aim: To predict the accuracy percentage of At - risk students based on High withdrawal and Failure rate. Materials and methods: Logistic Regression with sample size = 20 and Generalised Linear Model (GLM) with sample size = 20 was iterated different times for predicting accuracy percentage of At - risk students.
K. Harini, K. Sashi Rekha
openaire   +1 more source

Evaluating an Automated Number Series Item Generator Using Linear Logistic Test Models [PDF]

open access: yesJournal of Intelligence, 2018
This study investigates the item properties of a newly developed Automatic Number Series Item Generator (ANSIG). The foundation of the ANSIG is based on five hypothesised cognitive operators. Thirteen item models were developed using the numGen R package and eleven were evaluated in this study.
Bao Loe   +3 more
openaire   +5 more sources

The relative and interactive effects of urinary multiple metals exposure on hyperuricemia among urban elderly in China

open access: yesFrontiers in Public Health, 2023
ObjectiveIndependent and interactive effects of multiple metals levels in urine on the risk of hyperuricemia (HUA) in the elderly were investigated.MethodsA total of 6,508 individuals from the baseline population of the Shenzhen aging-related disorder ...
Chao Huang   +12 more
doaj   +1 more source

Forecasting Prorocentrum minimum blooms in the Chesapeake Bay using empirical habitat models

open access: yesFrontiers in Marine Science, 2023
Aquaculturists, local beach managers, and other stakeholders require forecasts of harmful biotic events, so they can assess and respond to health threats when harmful algal blooms (HABs) are present.
Dante M. L. Horemans   +4 more
doaj   +1 more source

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