SEARCHThe View from Eigenvector
EigenNews and EigenViews from Barry and the Eigenvector staff.
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. […]
EVRI-thing You Need to Know About Developing Classification Solutions
Jun 3, 2021
From verifying raw materials to determining the type of bacteria responsible for an infection, classification problems are common in the chemical and biological sciences. Many methods have been developed to classify samples based on a multivariate response and Eigenvector’s MATLAB-based PLS_Toolbox and stand-alone Solo support many of the most effective methods. In this webinar we’ll […]
EVRI-thing You Need to Know About Preprocessing
May 18, 2021
Preprocessing, what you do to data before it goes into a regression or machine learning model, is often the key to modeling success. In this webinar professor Rasmus Bro will demonstrate the great many types of preprocessing that you can do with Eigenvector’s MATLAB based PLS_Toolbox or stand-alone Solo software. You’ll learn how you can […]
EVRI-thing You Need to Know About Making Great Plots in PLS_Toolbox & Solo
May 4, 2021
Data visualization is an important aspect of data science and machine learning. But you can’t tell a great data story without great pictures! Eigenvector Senior Data Scientist Manuel Palacios shows you how to create great plots for presentations and publications with Eigenvector’s MATLAB based PLS_Toolbox or stand-alone Solo software. Table of Contents 00:00 – Introduction […]
EVRI-thing You Need to Know About How to do Partial Least Squares Regression
Apr 22, 2021
An introduction to one of the most widely used methods in machine learning: Partial Least Squares (PLS) Regression. Eigenvector’s Neal B. Gallagher and Lyle Lawrence will introduce you to PLS and show you how to use PLS_Toolbox and Solo to quickly develop PLS models for prediction! In this webinar we cover: Why and how PLS […]
EVRI-thing You Need to Know About How to do Principal Components Analysis
Apr 8, 2021
Eigenvector Technology Principal Bob Roginski will show you how to use Eigenvector’s MATLAB based PLS_Toolbox or stand-alone Solo to do PCA so you can start using this important method for your own data discovery. Table of Contents 00:00 – Introduction and Outlines 08:10 – Projections and Residuals 10:48 – Loadings 13:10 – Scores 14:40 – […]
EVRI-thing You Need to Know to Get Started with PLS_Toolbox and Solo
Mar 31, 2021
Eigenvector developers Scott Koch and Lyle Lawrence will show you how to get PLS_Toolbox and Solo up and running and access their most important features so you can get off to a quick start! Table of Contents 00:00 – Introduction and Outline 03:30 – Software Organization 07:53 – Installation 13:05 – Workspace Browser 22:55 – […]
EVRI-thing You Need to Know About Logistic Regression
Jan 25, 2021
Logistic Regression is an important machine learning method for sample classification. Join Eigenvector’s Manuel Palacios for an in-depth review of this conceptually simple but powerful technique. Table of Contents 00:00 – Introduction 02:15 – Classification Definition 03:36 – Classification Methods in PLS_Toolbox and Solo 04:34 – Logistic Regression Basics 09:45 – Multiclass Logistic Regression 14:00 […]
EVRI-thing You Need to Know About Cross-Validation
Aug 20, 2020
Cross-validation is a ubiquitous but often mis-used machine learning procedure. Eigenvector’s Barry M. Wise takes an in-depth review of this important methodology for establishing model meta-parameters and estimating predictive performance. Table of Contents 00:00 – Introduction and Outline 02:40 – Basics of Cross Validation 11:20 – Ways to Split the Data 26:42 – Things to […]
EVRI-thing You Need to Know About Deploying Models with Model_Exporter
Jul 23, 2020
Translate chemometric models for regression, classification and MSPC into numerical recipes you can apply anywhere with Model_Exporter. Here are the examples files used in the webinar and the slides. Table of Contents 00:00 – Introduction 04:40 – Applying a Model 05:40 – Model_Exporter Introduction 07:43 – Methods and Outputs 13:20 – Example: PCA with Autoscale […]
EVRI-thing You Need to Know About Curve Resolution
Jun 16, 2020
Multivariate Curve Resolution (MCR, aka, end-member extraction, self modeling mixture analysis, etc.) is used to extract chemically meaningful factors (i.e. concentrations and pure component spectra) from spectroscopic data and hyperspectral images. It is used with data generated by a variety of techniques including Raman, Infrared (IR), Near Infrared (NIR), and Fluorescence spectroscopy, as well as […]
Addendum – Model Centric Calibration Transfer Tool
Jun 2, 2020
The Model Centric Calibration Transfer Tool (MCCT) can be used to develop and optimize instrument standardization models and determine where they are best inserted into data preprocessing schemes. The resulting standardizations can then be embedded directly into calibration models for use on auxiliary instruments. This video demonstrates how to use the MCCT. For more info […]
EVRI-thing You Need to Know About How to Build and Deploy Instrument Standardization Models
Jun 2, 2020
Multivariate calibration models often rely on small changes in spectra to make predictions. Minor instrument differences between instruments can cause the calibration models used on one instrument to be biased or even completely useless on another.
EVRI-thing You Need to Know About Importing Data into PLS_Toolbox and Solo
May 13, 2020
Before discovery can begin you first have to get your data into the software. This step often presents challenges that can delay the entire process. Learn how to jump start your modeling by efficiently organizing and importing data into PLS_Toolbox and Solo. In this webinar we’ll discuss * Built-in importers for common file types * […]
EVRI-thing You Need to Know About Data Visualization with PLS_Toolbox and Solo
Apr 23, 2020
Data visualization techniques are often the key to unlocking information in large, high dimension data sets. In this webinar we explore many of these methods and show you how to access them in PLS_Toolbox and Solo. Learn how to: add meta-data such as class information, additional axes and labels to your data sets use “color […]
Variable Selection for PLS-DA Models
Apr 16, 2020
The previous webinar discusses how and why Variable Selection can improve regression models and demonstrates several methods. These methods can also be used to help optimize Partial Least Squares Discriminant Analysis (PLS-DA) models used for classification. In this video Barry M. Wise demonstrates variable selection with VIP (Variable Influence on Prediction) and SR (Selectivity Ratio) […]
EVRI-thing You Need to Know About Improving Models with Variable Selection
Apr 15, 2020
Professor Rasmus Bro of the University of Copenhagen presents. Want more accurate predictions? Easier model interpretation? Sparse models? Less expensive measurements? There are many reasons for doing variable selection. In this webinar we will show how easy it is to do and how it can improve your models. Using different examples we will show how […]