Foundations of Linear and Generalized Linear Models
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"The book arose from a one-semester graduate level course taught by Alan Agresti at Harvard University. It has a clear didactic focus, which benefits greatly from Agresti's well-known clear writing style. Each of the 11 chapters is followed by around 40 exercises, which are diverse and interesting." "...I am very happy with the foundational perspective of this book. I think that students who master this material will have a very thorough understanding of the most important aspects of GLMs, which is more valuable than a kaleidoscopic knowledge. This is certainly one of the books I will consider when next I need to teach a course in generalized linear models." "...this is a great introduction to GLMs written in a clear and didactic style, and with a thoughtful choice and presentation of the material. Highly recommended." --Biometrics Journal, 2016 "This book is an essential reference for anyone working with or teaching GLMs." (Mathematical Association of America, 2016)More details
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ALAN AGRESTI, PhD, is Distinguished Professor Emeritus in the Department of Statistics at the University of Florida. He has presented short courses on generalized linear models and categorical data methods in more than 30 countries. The author of over 200 journal articles, Dr. Agresti is also the author of Categorical Data Analysis, Third Edition, Analysis of Ordinal Categorical Data, Second Edition, and An Introduction to Categorical Data Analysis, Second Edition, all published by Wiley.
Content
Preface xi
1 Introduction to Linear and Generalized Linear Models 1
1.1 Components of a Generalized Linear Model 2
1.2 Quantitative/Qualitative Explanatory Variables and Interpreting Effects 6
1.3 Model Matrices and Model Vector Spaces 10
1.4 Identifiability and Estimability 13
1.5 Example: Using Software to Fit a GLM 15
Chapter Notes 20
Exercises 21
2 Linear Models: Least Squares Theory 26
2.1 Least Squares Model Fitting 27
2.2 Projections of Data Onto Model Spaces 33
2.3 Linear Model Examples: Projections and SS Decompositions 41
2.4 Summarizing Variability in a Linear Model 49
2.5 Residuals Leverage and Influence 56
2.6 Example: Summarizing the Fit of a Linear Model 62
2.7 Optimality of Least Squares and Generalized Least Squares 67
Chapter Notes 71
Exercises 71
3 Normal Linear Models: Statistical Inference 80
3.1 Distribution Theory for Normal Variates 81
3.2 Significance Tests for Normal Linear Models 86
3.3 Confidence Intervals and Prediction Intervals for Normal Linear Models 95
3.4 Example: Normal Linear Model Inference 99
3.5 Multiple Comparisons: Bonferroni Tukey and FDR Methods 107
Chapter Notes 111
Exercises 112
4 Generalized Linear Models: Model Fitting and Inference 120
4.1 Exponential Dispersion Family Distributions for a GLM 120
4.2 Likelihood and Asymptotic Distributions for GLMs 123
4.3 Likelihood-Ratio/Wald/Score Methods of Inference for GLM Parameters 128
4.4 Deviance of a GLM Model Comparison and Model Checking 132
4.5 Fitting Generalized Linear Models 138
4.6 Selecting Explanatory Variables for a GLM 143
4.7 Example: Building a GLM 149
Appendix: GLM Analogs of Orthogonality Results for Linear Models 156
Chapter Notes 158
Exercises 159
5 Models for Binary Data 165
5.1 Link Functions for Binary Data 165
5.2 Logistic Regression: Properties and Interpretations 168
5.3 Inference About Parameters of Logistic Regression Models 172
5.4 Logistic Regression Model Fitting 176
5.5 Deviance and Goodness of Fit for Binary GLMs 179
5.6 Probit and Complementary Log-Log Models 183
5.7 Examples: Binary Data Modeling 186
Chapter Notes 193
Exercises 194
6 Multinomial Response Models 202
6.1 Nominal Responses: Baseline-Category Logit Models 203
6.2 Ordinal Responses: Cumulative Logit and Probit Models 209
6.3 Examples: Nominal and Ordinal Responses 216
Chapter Notes 223
Exercises 223
7 Models for Count Data 228
7.1 Poisson GLMs for Counts and Rates 229
7.2 Poisson/Multinomial Models for Contingency Tables 235
7.3 Negative Binomial GLMS 247
7.4 Models for Zero-Inflated Data 250
7.5 Example: Modeling Count Data 254
Chapter Notes 259
Exercises 260
8 Quasi-Likelihood Methods 268
8.1 Variance Inflation for Overdispersed Poisson and Binomial GLMs 269
8.2 Beta-Binomial Models and Quasi-Likelihood Alternatives 272
8.3 Quasi-Likelihood and Model Misspecification 278
Chapter Notes 282
Exercises 282
9 Modeling Correlated Responses 286
9.1 Marginal Models and Models with Random Effects 287
9.2 Normal Linear Mixed Models 294
9.3 Fitting and Prediction for Normal Linear Mixed Models 302
9.4 Binomial and Poisson GLMMs 307
9.5 GLMM Fitting Inference and Prediction 311
9.6 Marginal Modeling and Generalized Estimating Equations 314
9.7 Example: Modeling Correlated Survey Responses 319
Chapter Notes 322
Exercises 324
10 Bayesian Linear and Generalized Linear Modeling 333
10.1 The Bayesian Approach to Statistical Inference 333
10.2 Bayesian Linear Models 340
10.3 Bayesian Generalized Linear Models 347
10.4 Empirical Bayes and Hierarchical Bayes Modeling 351
Chapter Notes 357
Exercises 359
11 Extensions of Generalized Linear Models 364
11.1 Robust Regression and Regularization Methods for Fitting Models 365
11.2 Modeling With Large p 375
11.3 Smoothing Generalized Additive Models and Other GLM Extensions 378
Chapter Notes 386
Exercises 388
Appendix A Supplemental Data Analysis Exercises 391
Appendix B Solution Outlines for Selected Exercises 396
References 410
Author Index 427
Example Index 433
Subject Index 435
