SEARCHThe View from Eigenvector
EigenNews and EigenViews from Barry and the Eigenvector staff.
Continuum Regression illustrates differences between PCR, PLS and MLR
Sep 18, 2009
There has been a discussion this week on the International Chemometrics Society List (ICS-L) involving differences between Principal Components Regression (PCR), Partial Least Squares (PLS) regression and Multiple Linear Regression (MLR). This has brought up the subject of Continuum Regression (CR), which is one of my favorite topics! I got into CR when I was […]
Chemometrics at SIMS XVII
Sep 17, 2009
The the 17th International Conference on Secondary Ion Mass Spectrometry, SIMS XVII, is being held this week in Toronto, CA. I am here with our Willem Windig. I’ve had an interest in SIMS for about a dozen years now, after being introduced to it by Anna Belu. Anna invited me to do a workshop on […]
Different kinds of PLS weights, loadings, and what to look at?
Sep 12, 2009
The age of Partial Least Squares (PLS) regression (as opposed to PLS path modeling) began with the SIAM publication of Svante Wold et. al. in 1984 [1]. Many of us learned PLS regression from the rather more accessible paper by Geladi and Kowalski from 1986 [2] which described the Nonlinear Iterative PArtial Least Squares (NIPALS) […]
New software releases coming in October
Sep 11, 2009
The Eigenvector programming staff has been working hard all summer, and the fruits of their labor are just about ripe! In October we plan to release new and substantially improved versions of PLS_Toolbox, MIA_Toolbox, Solo, and Solo+MIA. For a rundown of the most significant improvements see the new features brochure. I’m especially excited about the […]
Donal O’Sullivan joins Eigenvector
Sep 5, 2009
We’re pleased to announce that Donal O’Sullivan is the newest Eigenvectorian. As Senior Software Developer, Donal will be working with our Jeremy Shaver and Scott Koch to accelerate development of our off-the-shelf software products (PLS_Toolbox, Solo, etc.) and create custom solutions for our consulting clients. Donal has a wealth of programming experience and a very […]