Multi-way Analysis Applications in the

This book is an introduction to the field of multi-way analysis for chemists and chemometricians. Its emphasis is on the ideas behind the method and its pratical applications. Sufficient mathematical background is given to provide a solid understanding of the ideas behind the method. There are currently no other books on the market which deal with this method from the viewpoint of its applications in chemistry. Applicable in many areas of chemistry. No comparable volume currently available. The field is becoming increasingly important.

Age K. Smilde received his MSc in Econometrics at the University of Groningen in 1986. He moved to the Department of Pharmacy in the same city where he did his PhD in Analytical Chemistry. His PhD was on "Multivariate Calibration of Reversed Phase Chromatographic Systems", and he received his degree in 1990. In the year 1992, he visited the Center for Process Analytical Chemistry (Seattle, USA), where he worked together with Prof. Bruce Kowalski. He is the Eastern Analytical Symposium 2006 Award Recipient for Achievements in Chemo metrics. In 1996 he was chairman of the Gordon Research Conference on Statistics in Chemistry and Chemical Engineering in Oxford (UK). Together with Rasmus Bro and Paul Geladi he wrote the book Multiway Analysis: Applications in the Chemical Sciences.

Rasmus Bro (born 1965) studied mathematics and analytical chemistry at the Technical University of Denmark and received his M.Sc. in 1994. In 1998 he obtained his Ph.D. (Cum Laude) in multiway analysis from the University of Amsterdam, The Netherlands. In 2000 he received the third Elsevier Chemo metrics Award for noteworthy accomplishments in the field of chemo metrics by younger scientists, and in 2004 he received the Eastern Analytical Symposium Award for Achievements in Chemo metrics. He has authored more than 100 peer-reviewed scientific papers, 2 books on chemo metrics, and more than 20 proceedings, book contributions, reviews, and patents.

Paul Geladi currently works at the Department of Food Science, Stellenbosch University. Paul does research in Analytical Chemistry, Chemo-informatics and Electrochemistry. Their most recent publication is 'Covalently electro grafted carb ox phenyl layers onto gold surface serving as a platform for the construction of an immune sensor for detection of methotrexate.

Foreword.

Preface.

Nomenclature and Conventions.

1 Introduction.

1.1 What is multi-way analysis?

1.2 Conceptual aspects of multi-way data analysis.

1.3 Hierarchy of multivariate data structures in chemistry.

1.4 Principal component analysis and PARAFAC.

1.5 Summary.

2 Array definitions and properties.

2.1 Introduction.

2.2 Rows, columns and tubes; frontal, lateral and horizontal slices.

2.3 Elementary operations.

2.4 Linearity concepts.

2.5 Rank of two-way arrays.

2.6 Rank of three-way arrays.

2.7 Algebra of multi-way analysis.

2.8 Summary.

Appendix 2.A.

3 Two-way component and regression models.

3.1 Models for two-way one-block data analysis: component models.

3.2 Models for two-way two-block data analysis: regression models.

3.3 Summary.

Appendix 3.A: some PCA results.

Appendix 3.B: PLS algorithms.

4 Three-way component and regression models.

4.1 Historical introduction to multi-way models.

4.2 Models for three-way one-block data: three-way component models.

4.3 Models for three-way two-block data: three-way regression models.

4.4 Summary.

Appendix 4.A: alternative notation for the PARAFAC model.

Appendix 4.B: alternative notations for the Tucker3 model.

5 Some properties of three-way component models.

5.1 Relationships between three-way component models.

5.2 Rotational freedom and uniqueness in three-way component models.

5.3 Properties of Tucker3 models.

5.4 Degeneracy problem in PARAFAC models.

5.5 Summary.

6 Algorithms.

6.1 Introduction.

6.2 Optimization techniques.

6.3 PARAFAC algorithms.

6.4 Tucker3 algorithms.

6.5 Tucker2 and Tucker1 algorithms.

6.6 Multi-linear partial least squares regression.

6.7 Multi-way covariates regression models.

6.8 Core rotation in Tucker3 models.

6.9 Handling missing data.

6.10 Imposing non-negativity.

6.11 Summary.

Appendix 6.A: closed-form solution for the PARAFAC model.

Appendix 6.B: proof that the weights in trilinear PLS1 can be obtained from a singular value decomposition.

7 Validation and diagnostics.

7.1 What is validation?

7.2 Test-set and cross-validation.

7.3 Selecting which model to use.

7.4 Selecting the number of components.

7.5 Residual and influence analysis.

7.6 Summary.

8 Visualization.

8.1 Introduction.

8.2 History of plotting in three-way analysis.

8.3 History of plotting in chemical three-way analysis.

8.4 Scree plots.

8.5 Line plots.

8.6 Scatter plots.

8.7 Problems with scatter plots.

8.8 Image analysis.

8.9 Dendrograms.

8.10 Visualizing the Tucker core array.

8.11 Joint plots.

8.12 Residual plots.

8.13 Leverage plots.

8.14 Visualization of large data sets.

8.15 Summary.

9 Preprocessing.

9.1 Background.

9.2 Two-way centering.

9.3 Two-way scaling.

9.4 Simultaneous two-way centering and scaling.

9.5 Three-way preprocessing.

9.6 Summary.

Appendix 9.A: other types of preprocessing.

Appendix 9.B: geometric view of centering.

Appendix 9.C: fitting bilinear model plus offsets across one mode equals fitting a bilinear model to centered data.

Appendix 9.D: rank reduction and centering.

Appendix 9.E: centering data with missing values.

Appendix 9.F: incorrect centering introduces artificial variation.

Appendix 9.G: alternatives to centering.

10 Applications.

10.1 Introduction.

10.2 Curve resolution of fluorescence data.

10.3 Second-order calibration.

10.4 Multi-way regression.

10.5 Process chemometrics.

10.6 Exploratory analysis in chromatography.

10.7 Exploratory analysis in environmental sciences.

10.8 Exploratory analysis of designed data.

10.9 Analysis of variance of data with complex interactions.

Appendix 10.A: an illustration of the generalized rank annihilation method.

Appendix 10.B: other types of second-order calibration problems.

Appendix 10.C: the multiple standards calibration model of the second-order calibration example.

References.

Index.

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Multi-way Analysis Applications in the Chemical Sciences

Summary

Author Biography

Table of Contents

Supplemental Materials