# gnm v1.1-1

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## Generalized Nonlinear Models

Functions to specify and fit generalized nonlinear models, including models with multiplicative interaction terms such as the UNIDIFF model from sociology and the AMMI model from crop science, and many others. Over-parameterized representations of models are used throughout; functions are provided for inference on estimable parameter combinations, as well as standard methods for diagnostics etc.

# gnm

Functions to specify and fit generalized nonlinear models, including models with multiplicative interaction terms such as the UNIDIFF model from sociology and the AMMI model from crop science, and many others. Over-parameterized representations of models are used throughout; functions are provided for inference on estimable parameter combinations, as well as standard methods for diagnostics etc.

## Installation

You can install gnm from GitHub with:

# install.packages("devtools")
devtools::install_github("hturner/gnm")


## Code of conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

## Functions in gnm

 Name Description Diag Equality of Two or More Factors Dref Specify a Diagonal Reference Term in a gnm Model Formula Const Specify a Constant in a "nonlin" Function Predictor Symm Symmetric Interaction of Factors Inv Specify the Reciprocal of a Predictor in a gnm Model Formula MultHomog Specify a Multiplicative Interaction with Homogeneous Effects in a gnm Model Formula MPinv Moore-Penrose Pseudoinverse of a Real-valued Matrix barley Jenkyn's Data on Leaf-blotch on Barley cautres Data on Class, Religion and Vote in France Multiplicative interaction Specify a Product of Predictors in a gnm Model Formula House2001 Data on twenty roll calls in the US House of Representatives, 2001 Exp Specify the Exponential of a Predictor in a gnm Model Formula barleyHeights Heights of Barley Plants confint.gnm Compute Confidence Intervals of Parameters in a Generalized Nonlinear Model meanResiduals Average Residuals within Factor Levels asGnm Coerce Linear Model to gnm Object checkEstimable Check Whether One or More Parameter Combinations in a gnm Model are Identified residSVD Multiplicative Approximation of Model Residuals Topo Topological Interaction of Factors erikson Intergenerational Class Mobility in England/Wales, France and Sweden backPain Data on Back Pain Prognosis, from Anderson (1984) gnm-defunct Defunct Functions in gnm Package se.gnm Standard Errors of Linear Parameter Combinations in gnm Models mentalHealth Data on Mental Health and Socioeconomic Status anova.gnm Analysis of Deviance for Generalized Nonlinear Models gnm Fitting Generalized Nonlinear Models friend Occupation of Respondents and Their Closest Friend se Extract Standard Errors exitInfo Print Exit Information for gnm Fit gnm-package Generalized Nonlinear Models summary.gnm Summarize Generalized Nonlinear Model Fits instances Specify Multiple Instances of a Nonlinear Term in a gnm Model Formula parameters Extract Constrained and Estimated Parameters from a gnm Object expandCategorical Expand Data Frame by Re-expressing Categorical Data as Counts wedderburn Wedderburn Quasi-likelihood Family getContrasts Estimated Contrasts and Standard Errors for Parameters in a gnm Model voting Data on Social Mobility and the Labour Vote pickCoef Get Indices or Values of Selected Model Coefficients ofInterest Coefficients of Interest in a Generalized Nonlinear Model predict.gnm Predict Method for Generalized Nonlinear Models plot.gnm Plot Diagnostics for a gnm Object model.matrix.gnm Local Design Matrix for a Generalized Nonlinear Model yaish Class Mobility by Level of Education in Israel wheat Wheat Yields from Mexican Field Trials nonlin.function Functions to Specify Nonlinear Terms in gnm Models profile.gnm Profile Deviance for Parameters in a Generalized Nonlinear Model termPredictors Extract Term Contributions to Predictor vcov.gnm Variance-covariance Matrix for Parameters in a Generalized Nonlinear Model No Results!

## Vignettes of gnm

 Name fig-Effect_plots.pdf fig-LCall.pdf fig-LCover45.pdf fig-LCqvplot.pdf fig-deaths1921-1940.pdf fig-profilePlot.pdf gnm.bib gnmOverview.Rnw screenshot1.png screenshot2.png screenshot3.png No Results!