Results 41 to 50 of about 25,321,415 (248)

Regularization Methods for Additive Models [PDF]

open access: yes, 2003
This paper tackles the problem of model complexity in the context of additive models. Several methods have been proposed to estimate smoothing parameters, as well as to perform variable selection. However, these procedures are inefficient or computationally expensive in high dimension.
Avalos, Marta   +2 more
openaire   +2 more sources

High-dimensional Structured Additive Regression Models: Bayesian Regularisation, Smoothing and Predictive Performance [PDF]

open access: yes, 2009
Data structures in modern applications frequently combine the necessity of flexible regression techniques such as nonlinear and spatial effects with high-dimensional covariate vectors. While estimation of the former is typically achieved by supplementing
Konrath, Susanne   +2 more
core   +1 more source

Optimal design for additive partially nonlinear models [PDF]

open access: yes, 2010
We develop optimal design theory for additive partially nonlinear regression models, showing that Bayesian and standardized maximin D-optimal designs can be found as the products of the corresponding optimal designs in one dimension.
D. C. Woods   +9 more
core   +1 more source

additive: Bindings for Additive TidyModels [PDF]

open access: yes, 2022
Fit Generalized Additive Models (GAM) using 'mgcv' with 'parsnip'/'tidymodels' via 'additive' . 'tidymodels' is a collection of packages for machine learning; see Kuhn and Wickham (2020) ). The technical details of 'mgcv' are described in Wood (2017) .To
Badr, Hamada S.
core   +1 more source

Stable and Efficient Multiple Smoothing Parameter Estimation for Generalized Additive Models

open access: yes, 2004
Representation of generalized additive models (GAM's) using penalized regression splines allows GAM's to be employed in a straightforward manner using penalized regression methods.
S. Wood
semanticscholar   +1 more source

Normal-Mixture-of-Inverse-Gamma Priors for Bayesian Regularization and Model Selection in Structured Additive Regression Models [PDF]

open access: yes, 2010
In regression models with many potential predictors, choosing an appropriate subset of covariates and their interactions at the same time as determining whether linear or more flexible functional forms are required is a challenging and important task. We
Scheipl, Fabian
core   +1 more source

On concurvity in nonlinear and nonparametric regression models

open access: yesStatistica, 2014
When data are affected by multicollinearity in the linear regression framework, then concurvity will be present in fitting a generalized additive model (GAM). The term concurvity describes nonlinear dependencies among the predictor variables.
Sonia Amodio   +2 more
doaj   +1 more source

Additive and non-additive genetic effects of humoral immune traits in Japanese quail

open access: yesJournal of Applied Poultry Research, 2022
SUMMARY: In breeding programs, using appropriate models to estimate the variance components with high accuracy is essential. Considering the non-additive genetic effects along with additive effects in evaluation analysis models can be effective in ...
H. Faraji-Arough   +3 more
doaj   +1 more source

Estimation of parameters of autoregressive models with fractional differences in the presence of additive noise

open access: yesВестник Самарского университета: Естественнонаучная серия, 2023
For modeling in time series, models with fractional differences are widely used. The best known model is the ARFIMA (autoregressive fractionally integrated moving average) model.
Dmitriy V. Ivanov
doaj   +1 more source

Flexible semiparametric mixed models [PDF]

open access: yes, 2005
In linear mixed models the influence of covariates is restricted to a strictly parametric form. With the rise of semi- and nonparametric regression also the mixed model has been expanded to allow for additive predictors.
Reithinger, Florian, Tutz, Gerhard
core   +1 more source

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