SEARCHThe View from Eigenvector
EigenNews and EigenViews from Barry and the Eigenvector staff.
Chemometrics Software for Classroom Use
Sep 17, 2012
Autumn is nearly here and with it comes the first semester of the school year. This morning I was greeted by a sign of fall: a slew of student account creation notifications, drifting into my email inbox like falling leaves. At EVRI, we work with professors to make our software freely available to students enrolled […]
By Popular Demand: EigenU Online
Jun 22, 2012
At the last several editions of Eigenvector University (aka EigenU) our beginning track courses have been consistently overbooked. This includes the first three days of courses consisting of Linear Algebra for Chemometricians, MATLAB for Chemometricians, Chemometrics I: PCA, and Chemometrics II: Regression and PLS. There were also EigenU attendees with schedule conflicts that made it […]
EigenU 2012 Poster Session Winners
May 21, 2012
EigenU 2012, the Seventh Annual Eigenvector University, was held last week at the Washington Athletic Club in Seattle. Our Tuesday evening PLS_Toolbox/Solo User poster session gave EigenU attendees a chance to unwind with hors d’oeuvres and beverages and discuss some chemometric applications. This year’s posters were judged by Paul Geladi, professor of Chemometrics at SLU, […]
iPods Ordered!
Apr 27, 2012
The Seventh Annual Eigenvector University starts in just over two weeks on Sunday, May 13, 2012. We’re looking forward to a busy week, including the PLS_Toolbox/Solo User Poster Session. This Tuesday evening event showcases research done by our users. Presenters of the two best posters go home with Apple iPod nanos. I ordered them today, […]
Top 10 Reasons to come to EigenU 2013
Apr 4, 2012
If you are in the market for training in multivariate methods you have a number of choices. In North America, you could attend classes given by CAMO, ProSensus, or Umetrics. Here are 10 reasons you should come to the 8th Annual EigenU 2013, May 12-17 in Seattle, instead: More experienced instructors – Courses at EigenU […]
New Releases: PLS_Toolbox and Solo 6.7, MIA_Toolbox 2.7
Mar 20, 2012
Updates to our flagship PLS_Toolbox and Solo were released last week; they are now in version 6.7. This is in keeping with our policy, (began in 2008), to release significant upgrades twice yearly. Our Multivariate Image Analysis (MIA) tools were also updated with the release of Solo+MIA 6.7 and MIA_Toolbox 2.7. As the Version 6.7 […]
Cross-validation Explained
Feb 27, 2012
I was recently teaching a chemometrics course with Rasmus Bro when he was asked to explain cross-validation. Rasmus sketched up an example to explain it, and I was inspired by that to turn it into a more formal movie. Just click on the link below to view it. Enjoy! Cross_Validation_Explained BMW
EigenU Registrations Coming In!
Jan 23, 2012
Registrations have started coming in for Eigenvector University 2012. This seventh annual EigenU will be May 13-18 at the Washington Athletic Club in Seattle. New for this year, Batch Multivariate Statistical Process Control for PAT combines the technical aspects of developing chemometric models for monitoring batch processes with the practical aspects of implementing and deploying […]
PLS_Toolbox in Research and Publications
Dec 6, 2011
Our Chief of Technology Development Jeremy M. Shaver received a very nice letter this morning from Balázs Vajna, who is a Ph.D. student at Budapest University of Technology and Economics. As you’ll see from the references below, he is a very productive young man! Here is his letter to Jeremy, highlighting how he used PLS_Toolbox […]
Missing Data (part three)
Nov 21, 2011
In the first and second installments of this series, we considered aspects of using an existing PCA model to replace missing variables. In this third part, we’ll move on to using PLS models. Although it was shown previously that PCA can be used to perfectly impute missing values in rank deficient, noise free data, it’s […]
2011 EAS Awards for NIR and Chemometrics
Nov 17, 2011
I had the privilege of being involved with two award sessions at this week’s Eastern Analytical Symposium (EAS). I was very pleased to be invited to speak in the session honoring former Eigenvectorian Charles E. “Chuck” Miller for Outstanding Achievements in Near Infrared Spectroscopy. Chuck elected to have talks from speakers that represented phases in […]
Missing Data (part two)
Nov 11, 2011
In Missing Data (part one) I outlined an approach for in-filling missing data when applying an existing Principal Components Analysis (PCA) model. Let us now consider when this approach might be expected to fail. Recall that missing data estimation results in a least-squares problem with solution: xb = –xgR21R11-1 In our short courses, I advise […]
What’s in a Logo?
Nov 7, 2011
Branding is an important aspect of promoting a business and central to that is developing an identifiable logo. I like logos, (and sometimes wish I could be a graphic designer). The best logos, besides looking great, have a deep connection to the thing they represent. Coming up with a good one is quite an exercise. […]
Missing Data (part one)
Nov 5, 2011
Over the next few weeks I’m going to be discussing some aspects of missing data. This is an important aspect of chemometrics as many applications suffer from this problem. Missing data is especially common in process applications where there are many independent sensors. I got interested in missing data while in graduate school in the […]
PLS_Toolbox/Solo Advanced Features in NJ
Nov 2, 2011
Eigenvector Vice-president Neal B. Gallagher and Chief of Technology Development Jeremy M. Shaver will present Using the Advanced Features in PLS_Toolbox/Solo 6.5 in New Brunswick, NJ on December 8-9, 2011. The course will be held at the Hyatt Regency. With PLS_Toolbox and Solo Version 6.5 released last month, this is an opportune time to attend […]
FOSS Course Conclusion
Oct 27, 2011
Our Basic/Intermediate Chemometrics course at FOSS in Hillerød, Denmark, concluded today. It has been a good week; Rasmus and I have really enjoyed it. We’ve had lots of good discussion with plenty of examples offered by class members. And our students have been very attentive–note that they have the same thing on their screens as […]
Off to Hillerød
Oct 20, 2011
I’m leaving in the morning to go to Hillerød, Denmark, where we are holding a Beginning/Intermediate Chemometrics course. I’ll be teaching with Rasmus Bro, which I always enjoy. Rasmus has a very relaxed lecturing style and is very good at explaining chemometric concepts. I always learn something, even when it is about subjects I’m already […]
Multi-platform Chemometrics Software
Oct 14, 2011
When I go to conferences I often look around to see what sort of computers people are using. In the past year or so I’ve noticed a significant uptick in the number of Macs. At SSC-12, SIMS-XVIII and FACSS/SCIX-2011 Macs accounted for about half of the laptops that I saw in use in the technical […]
Report from FACSS
Oct 6, 2011
This year’s Federation of Analytical Chemistry and Spectroscopy Societies meeting (FACSS) was quite vibrant. The number of participants was up from recent years, with close to 1200 registrants. Attendance at the technical sessions and traffic at the exhibit was good. As usual, EVRI was there in force. Our booth crew is shown above, including me, […]
Off to FACSS, PLS_Toolbox/Solo 6.5
Sep 30, 2011
The Federation of Analytical Chemistry and Spectroscopy Societies (FACSS) annual meeting starts this Sunday, October 2, in Reno, NV. The EVRI crew headed there includes Neal B. Gallagher (NBG), Jeremy M. Shaver (JMS), Randy Bishop (RB), and myself (BMW). We expect to be busy! We have a number of papers to give, listed below. Visualizing […]