SEARCHThe View from Eigenvector
EigenNews and EigenViews from Barry and the Eigenvector staff.
EVRI-thing You Need to Know About Automated Hierarchical Classification Models
Mar 16, 2023
The recently released PLS_Toolbox and Solo version 9.2 includes many improvements and additions, but perhaps the most exciting is the Hierarchical Model Automatic Classifier (HMAC) tool. The HMAC automatically creates a decision tree of Partial Least Squares Discriminant Analysis (PLS-DA) models for complex classification problems. It is based on the recently published AHIMBU method (Marchi, […]
EVRI-thing You Need to Know About PLS_Toolbox & Solo 9.2
Feb 23, 2023
Version 9.2 includes new methods for automatically creating complex classification models, determining meta-parameters in Grey-CLS and much more.
A Crash Course in Calibration Model Development Getting Models Online
Dec 8, 2022
More than just developing a regression model, quality calibrations start with planning for data collection and end with online deployment. The process is covered start to finish in this free webinar. In this addendum to the course we discuss how models can be implemented online for automated predictions. Model implementation with Solo_Predictor and Model_Exporter are […]
A Crash Course in Calibration Model Development Part 4: Optimizing Models, Saving and Documenting Models, Model Maintenance and Conclusions
Dec 7, 2022
More than just developing a regression model, quality calibrations start with planning for data collection and end with online deployment. The process is covered start to finish in this free webinar. In this fourth part of “A Crash Course in Calibration Model Development” we discuss optimizing models with preprocessing and variable selection, saving and documenting […]
A Crash Course in Calibration Model Development Part 3: Building a Partial Least Squares (PLS) Regression Model
Dec 7, 2022
More than just developing a regression model, quality calibrations start with planning for data collection and end with online deployment. The process is covered start to finish in this free webinar. In this Part 3 of this course we show how to develop a model with Partial Least Squares regression using PLS_Toolbox or Solo. Download […]
A Crash Course in Calibration Model Development Part 2: Data Review, Plotting and Principal Components Analysis (PCA)
Dec 7, 2022
More than just developing a regression model, quality calibrations start with planning for data collection and end with online deployment. The process is covered start to finish in this free webinar. In this second part we discuss reviewing data by plotting and using Principal Components Analysis (PCA) to screen data for outliers and find interesting […]
A Crash Course in Calibration Model Development Part 1: Introduction, Developing a Calibration Data Set, Importing Data into PLS_Toolbox/Solo
Dec 7, 2022
More than just developing a regression model, quality calibrations start with planning for data collection and end with online deployment. The process is covered start to finish in this free webinar. In this Part 1, we introduce Chemometrics and Machine Learning, discuss how to develop a calibration data set, and show how to import data […]
EVRI-thing You Need to Know About MLR, Ridge, LASSO and ElasticNet
Aug 25, 2022
Multiple Linear Regression goes wrong when used with ill-conditioned data. Find out how to fix it with Ridge Regression, LASSO and ElasticNet.
EVRI-thing You Need to Know About Batch Analysis
Aug 4, 2022
Many pharmaceuticals and fine chemicals are made in batch processes. Learn how to model data from batches for monitoring and analysis.
EVRI-thing You Need to Know About Modeling Fluorescence EEM Data
Feb 22, 2022
Learn how to use the multi-way analysis tools such as PARAFAC in PLS_Toolbox & Solo to model fluorescence excitation emission (EEM) data.
EVRI-thing You Need to Know About ANN Options in PLS_ToolboxSolo
Jan 24, 2022
Learn about the Artificial Neural Network (ANN) methods available in PLS_Toolbox and Solo.
EVRI-thing You Need to Know About t-SNE & UMAP in PLS_Toolbox/Solo
Jan 6, 2022
PLS_Toolbox and Solo version 9.0 include two relatively new data visualization methods, t-distributed Stochastic Neighbor Embedding (t-SNE) and Uniform Manifold Approximation and Projection (UMAP). These routines, from the scikitlearn library for Python, can now be found in our interfaces (and for PLS_Toolbox, also at the MATLAB® command line). We will introduce these methods and show […]
Gray Classical Least Squares (CLS) with GLSW filter
Dec 17, 2021
PLS_Toolbox and Solo 9.0 include the ability to make Gray Classical Least Squares (CLS) models. This is a CLS model that uses Generalized Least Squares Weighting (GLSW) or External Parameter Orthogonalization (EPO) filter data based on the residuals of a preliminary CLS model. This video shows how to use this functionality in the new PLS_Toolbox […]
EVRI-thing You Need to Know About PLS_Toolbox & Solo 90
Dec 17, 2021
Version 9.0 includes new methods for data visualization and machine learning and a host of other improvements. Learn how to access them in this free webinar. See these addendum videos for additional examples not covered in the first video: Gray Classical Least Squares (CLS) with GLSW filter
Python Configuration for Solo
Oct 7, 2021
Python Configuration for PLS_Toolbox
Sep 24, 2021
EVRI-thing You Need to Know About TrendTool for Exploring Ordered Data
Jul 13, 2021
Many chemical and biological data sets are logically ordered by an axis variable such as time, space, or wavelength. In this webinar we will show how to explore these data sets using TrendTool, a utility that is available in Eigenvector’s MATLAB based PLS_Toolbox and stand-alone Solo software. TrendTool can be used, for example, to find […]
EVRI-thing You Need to Know About Scripting and Objects in PLS_Toolbox Addenum 2
Jun 30, 2021
Scripting the modelcentric calibration transfer object.
EVRI-thing You Need to Know About Scripting and Objects in PLS_Toolbox Addenum 1
Jun 30, 2021
Make a video of plots.
EVRI-thing You Need to Know About Scripting and Objects in PLS_Toolbox
Jun 28, 2021
The vast majority of data analysis tasks can be performed within the Graphical User Interfaces (GUIs) in PLS_Toolbox, however there is another layer of powerful tools that can only be accessed from the MATLAB command line. Learn how to use scripts and objects to directly access the code behind PLS_Toolbox interfaces in this free webinar. […]