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Generalized Linear Models for Insurance Data.
目录看不清楚的请看附件中的PDF文档。
- Table of ContentsPreface ix 1 Insurance data 1 1.1 Introduction 2 1.2 Types of variables 3 1.3 Data transformations 4 1.4 Data exploration 6 1.5 Grouping and runoff triangles 10 1.6 Assessing distributions 12 1.7 Data issues and biases 13 1.8 Data sets used 14 1.9 Outline of rest of book 19 2 Response distributions 20 2.1 Discrete and continuous random variables 20 2.2 Bernoulli 21 2.3 Binomial 22 2.4 Poisson 23 2.5 Negative binomial 24 2.6 Normal 26 2.7 Chi-square and gamma 27 2.8 Inverse Gaussian 29 2.9 Overdispersion 30 Exercises 33 3 Exponential family responses and estimation 35 3.1 Exponential family 35 3.2 The variance function 36 3.3 Proof of the mean and variance expressions 37 3.4 Standard distributions in the exponential family form 37 3.5 Fitting probability functions to data 39 Exercises 41 4 Linear modeling 42 4.1 History and terminology of linear modeling 42 4.2 What does "linear" in linear model mean? 43 4.3 Simple linear modeling 43 4.4 Multiple linear modeling 44 4.5 The classical linear model 46 4.6 Least squares properties under the classical linear model 47 4.7 Weighted least squares 47 4.8 Grouped and ungrouped data 48 4.9 Transformations to normality and linearity 49 4.10 Categorical explanatory variables 51 4.11 Polynomial regression 53 4.12 Banding continuous explanatory variables 54 4.13 Interaction 55 4.14 Collinearity 55 4.15 Hypothesis testing 56 4.16 Checks using the residuals 58 4.17 Checking explanatory variable specifications 60 4.18 Outliers 61 4.19 Model selection 62 5 Generalized linear models 64 5.1 The generalized linear model 64 5.2 Steps in generalized linearmodeling 65 5.3 Links and canonical links 66 5.4 Offsets 66 5.5 Maximum likelihood estimation 67 5.6 Confidence intervals and prediction 70 5.7 Assessing fits and the deviance 71 5.8 Testing the significance of explanatory variables 74 5.9 Residuals 77 5.10 Further diagnostic tools 79 5.11 Model selection 80 Exercises 80 6 Models for count data 81 6.1 Poisson regression 81 6.2 Poisson overdispersion and negative binomial regression 89 6.3 Quasi-likelihood 94 6.4 Counts and frequencies 96 Exercises 96 7 Categorical responses 97 7.1 Binary responses 97 7.2 Logistic regression 98 7.3 Application of logistic regression to vehicle insurance 99 7.4 Correcting for exposure 102 7.5 Grouped binary data 105 7.6 Goodness of fit for logistic regression 107 7.7 Categorical responses with more than two categories 110 7.8 Ordinal responses 111 7.9 Nominal responses 116 Exercises 119 8 Continuous responses 120 8.1 Gamma regression 120 8.2 Inverse Gaussian regression 125 8.3 Tweedie regression 127 Exercises 128 9 Correlated data 129 9.1 Random effects 131 9.2 Specification of within-cluster correlation 136 9.3 Generalized estimating equations 137 Exercise 140 10 Extensions to the generalized linear model 141 10.1 Generalized additive models 141 10.2 Double generalized linear models 143 10.3 Generalized additive models for location, scale and shape 143 10.4 Zero-adjusted inverse Gaussian regression 145 10.5 A mean and dispersion model for total claim size 148 Exercises 149 Appendix 1 Computer code and output 150 A1.1 Poisson regression 150 A1.2 Negative binomial regression 156 A1.3 Quasi-likelihood regression 159 A1.4 Logistic regression 160 A1.5 Ordinal regression 169 A1.6 Nominal regression 175 A1.7 Gamma regression 178 A1.8 Inverse Gaussian regression 181 A1.9 Logistic regression GLMM 183 A1.10 Logistic regression GEE 185 A1.11 Logistic regression GAM 187 A1.12 GAMLSS 189 A1.13 Zero-adjusted inverse Gaussian regression 190 Bibliography 192 Index 195
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