Multivariate Analysis of Quality: An Introduction

Multivariate data analysis is a central tool whenever several variables need to be considered at the same time. The present book explains a powerful and versatile way to analyse data tables, suitable also for researchers without formal training in statistics. This method for extracting useful information from data is demonstrated for various types of quality assessment, ranging from human quality perception via industrial quality monitoring to health quality and its molecular basis. Key features include: ∗ Minimum mathematics; all technical details in appendix form ∗ Very accessible style with cartoons, self assessment questions and wide range of practical examples ∗ All data sets available FREE online on Chemometrics World (http://www.wiley.co.uk/wileychi/chemometrics). Essential reading for researchers who need data analysis in practice, it will be of particular interest to chemometricians, sensometricians and food scientists already familiar with Harald′s previous book. The book is written with ISO certified businesses and laboratories in mind, to enhance Total Quality Management (TQM). As yet there are no clear guidelines for realistic data analysis of quality in complex systems – this volume bridges the gap.

Preface. Acknowledgements. OVERVIEW. Why Multivariate Data Analysis? Qualimetrics for Determining Quality. A Layman′s Guide to Multivariate Data Analysis. METHODOLOGY. Some Estimation Concepts. Analysis of One Data Table X: Principle Component Analysis. Analysis of Two Data Tables X and Y: Partial Least Squares Regression (PLSR). Example of Multivariate Calibration Project. Interpretation of Many Types of Data X and Y: Exploring Relationships in Interdisciplinary Data Sets. Classification and Discrimination X—1, X—2, X—3: Handling Heterogeneous Sample Sets. Validation X and Y. Experimental Planning Y and X. APPLICATIONS. Multivariate Calibration: Quality Determination of Wheat From High–speed NIR Spectra. Analysis of Questionnaire Data: What Determines Quality of the Working Environment? Analysis of a Heterogeneous Sample Set: Predicting Toxicity From Quantum Chemistry. Multivariate Statistical Process Control: Quality Monitoring of a Sugar Production Process. Design and Analysis of Controlled Experiments: Reducing Loss of Quality in Stored Food. Appendix A1: How the Present Book Relates to Some Mathematical Modelling Traditions in Science. Appendix A2: Sensory Science. Appendix A3.1: Bi–linear Modelling Has Many Applications. Appendix A3.2: Common Problems and Pitfalls in Soft Modelling. Appendix A4: Mathematical Details. Appendix A5: PCA Details. Appendix A6: PLS Regression Details. Appendix A7: Modelling the Unknown. Appendix A8: Non–linearity and Weighting. Appendix A9: Classification and Outlier Detection. Appendix A10: Cross–validation Details. Appendix A11: Power Estimation Details. Appendix A12: What Makes NIR Data So Information–rich? Appendix A13: Consequences of the Working Environment Survey. Appendix A14: Details of the Molecule Class Models. Appendix A15: Forecasting the Future. Appendix A16: Significance Testing with Cross–validation vs. ANOVA. References. Index.

Harald Martens, Professor of Chemometrics, Norwegian University of Science and Technology, and Technical University of Denmark. He is co–author of the best selling book, Multivariate Calibration, also published by John Wiley & Sons. He has won many awards for his work in data analysis including in 1999 the Galactic Industries Prize and the Herman World medal. His present developments have also been incorporated by CAMO Inc in their latest version of The Unscrambler. Magni Martens, Professor of Sensory Science, Royal Veterinary & Agricultural University, Denmark. She has also won awards for her work in sensory science including in 2000 the prestigious Carlsberg Research Foundation proze. She has published numerous papers on multivariate data analysis for relating "soft" human quality perception to "hard" facts and measurements.

"This is an important book; the authors have done a quality job..." (N.I.R. News, Vol 12/1, 2001) "This book is recommended to students of chemical, biochemical and food engineering, scientists and industrial practitioners". (Chemical Biochemical Engineering, June 2001) "a possible source of inspiration" (Measurement Science Technology, October 2001) "a powerful and versatile methodology" (Chemie Plus, June 2001) "...should prove a very useful text for this target readership." (Short Book Reviews, Vol. 22, No. 1, April 2002) "...Through the book, there is a solid philosophy and opinions supported by the intelligence and experience of the couple [authors]..." (Applied Spectroscopy, Vol.56, No.8, 2002) "...The book is written by two experts in the field with nearly 30 years of experience, and this is reflected in every aspect of the book..." (Journal of Chemometrics, No.16, 2002)