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Introduction 3
A Description of Sample Data Sets Used in Further Chapters 9
A Description of Example Data Sets 9
References 25
Panelist and Panel Performance: A Multivariate Experience 27
The Multivariate Nature of Sensory Evaluation 27
Univariate Approaches to Panelist Assessment 29
Multivariate Techniques for Panelist Performance 32
Panel Evaluation through Multivariate Techniques 43
Conclusions 46
References 47
A Nontechnical Description of Preference Mapping 49
Introduction 49
Internal Preference Mapping 49
External Preference Mapping (PREFMAP) 58
Conclusions 66
References 67
Deterministic Extensions to Preference Mapping Techniques 69
Introduction 69
Application and Models Available 69
Conclusions 89
References 94
Multidimensional Scaling and Unfolding and the Application of Probabilistic Unfolding to Model Preference Data 95
Introduction 95
Multidimensional Scaling (MDS) and Unfolding 96
Probabilistic Approach to Unfolding and Identifying the Drivers of Liking 98
Examples 100
References 109
Consumer Segmentation Techniques 111
Introduction 111
Methods Available 111
Segmentation Methods Using Hierarchical Cluster Analysis 113
References 126
Ordinal Logistic Regression Models in Consumer Research 129
Introduction 129
Limitations of Ordinary Least Square Regression 129
Odds, Odds Ratio, and Logit 130
Binary Logistic Regression 133
Ordinal Logistic Regression Models 144
Proportional Odds Model (POM) 144
Conclusions 160
References 160
Risk Assessment in Sensory and Consumer Science 163
Introduction 163
Concepts of Quantitative Risk Assessment 164
A Case Study: Cheese Sticks Appetizers 166
Conclusions 176
References 176
Application of MARS to Preference Mapping 179
Introduction 179
MARS Basics 179
Setting Control Parameters and Refining Models 187
Example of Application of MARS 188
A Comparison with PLS Regression 201
References 205
Analysis of Just About Right Data 207
Introduction 207
Basics of Penalty Analysis 208
Boot Strapping Penalty Analysis 210
Use of MARS to Model JAR Data 212
A Proportional Odds/Hazards Approach to Diagnostic Data Analysis 215
Use of Dummy Variables to Model JAR Data 220
References 233
Index 237
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