Eigenvector White Papers

The following white papers provide brief technical descriptions of Eigenvector software and consulting applications. Although these papers represent a small portion of the projects and applications developed by our staff, we hope that they provide some insight into the solutions we can provide. If you have questions or would like information on a subject not listed please contact us at (bmw@eigenvector.com).

Documents:

• Gallagher, N.B., O’Sullivan, D. “Using Partial Least Squares Discriminant Analysis (PLSDA) for Linear Discriminant Analysis (LDA) Part II: Theory. (2023). DOI: 10.13140/RG.2.2.18056.19204 (186 KB)
• Gallagher, N.B., O’Sullivan, D., “Using Partial Least Squares Discriminant Analysis (PLSDA) for Linear Discriminant Analysis (LDA) Part I: Application. (2023). DOI: 10.13140/RG.2.2.24767.07841 (405 KB)
• Introduction to Hyperspectral Imaging and Multivariate Image Analysis (PDF 5 MB)
• The Effect of Data Centering on PCA Models (PDF 969 KB)
• Fitting Smooth Curves Part IV: Baselining with Asymmetric Least-Squares and Basis Functions (PDF 593 KB)
• Fitting Smooth Curves Part III: Baselining with an Asymmetric Least-Squares Algorithm(PDF 1.2 MB)
• Fitting Smooth Curves Part II: Fitting with a Robust Algorithm (PDF 1.1 MB)
• Fitting Smooth Curves Part I: Fitting with Equality Constraints and Basis Functions (PDF 836 KB)
• Savitzky-Golay Smoothing and Differentiation Filter (PDF 1.1 MB)
• Selection of Representative Learning and Test Sets Using the Onion Method (PDF 1.8 MB)
• Detection and Classification with Overlapping Signals (PDF 129 KB)
• Introduction to Preprocessing Calibration and Application (PDF 398 KB)
• Generalized Weighting to Account for Sampling Artifacts (PDF 604 KB)
• PARAFAC for Analysis of Fluorescence EEM Data (PDF 769 KB)
• Selection of Representative Learning and Test Sets Using the Onion Method (PDF 1.8 MB)
• Whittaker Smoother (PDF 604 KB)
• NIR Method for Determining the Active Ingredient in Pharmaceutical Tablets (PDF 210 KB)
• Chemometric Analysis of LC/MS Electrospray Data (PDF 127 KB)
• Extended Multiplicative Scatter Correction Applied to Mid-Infrared Reflectance Measurements of Soil (PDF 2.8 MB)
• Self-modeling Mixture Analysis of FTIR Microscopy Spectra of a Polymer Laminate (PDF 120 KB)
• Adaptive Multi-Way Principal Components Analysis Applied to Monitoring a Semiconductor Etch Process (PDF 134 KB)
• Self-Modeling Mixture Analysis of Time-Resolved Mass Spectra of a Three Component Mixture (PDF 158 KB)
• Development and Implementation of Effective Multivariate Calibrations for Process Analytical Applications (PDF 176 KB)
• Using PLS_Toolbox and MATLAB Online (PDF 45 KB)
• Deploying your PCA Model Online using PLS_Toolbox with OPC (PDF 65 KB)
• Self-modeling Mixture Analysis of SIMS Image Data (PDF 266 KB)