The View from Eigenvector

EigenNews and EigenViews from Barry and the Eigenvector staff.

The View from Eigenvector

NIPALS versus Lanczos Bidiagonalization

Jun 24, 2008

In 2007, Randy Pell, Scott Ramos and Rolf Manne (PRM) ignited a controversy when they published “The model space in PLS regression.” Their paper pointed out that the X-block residuals in different PLS packages were not the same. Specifically, packages which use the NIPALS or SIMPLS method for PLS (including PLS_Toolbox/Solo, Unscrambler and SIMCA-P) produce […]

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CAC-2008 in Montpellier, France

Jun 23, 2008

The Eleventh Conference on Chemometrics in Analytical Chemistry, CAC-2008, begins next week in Montpellier, France. The conference runs from June 30 through July 4. All indications are that it will be a great conference. The organizers say that attendance is will be close to 350, which must be a record for CAC. Eigenvector will be […]

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Chemometrics Software Prices

Jun 13, 2008

I was doing a little market research the other day, trying to find out what our competitors charge for their software. As it turns out, it’s somewhat difficult to get prices for several of them. EVRI publishes its price list, as does Infometrix. So if you want to find out the price of PLS_Toolbox, or […]

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Network and Floating Licenses

Jun 12, 2008

The majority of the licenses we sell for PLS_Toolbox and our other products are single user licenses, though they might be more correctly called single computer licenses. Our license agreement, (which is based on the license agreement used by The MathWorks for their toolboxes), states “This license permits licensee to install and use one copy […]

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Pietro Cosentino wins Best Presentation Prize at CMA4CH 2008

Jun 5, 2008

The Multivariate Analysis and Chemometrics Applied to Environment and Cultural Heritage conference, CMA4CH, was held on Ventotene Island, Italy, June 1-4, 2008. This somewhat specialized conference focuses on how multivariate techniques can be used to improve understanding of the environment and cultural artifacts. EVRI was pleased to be a sponsor of CMA4CH, and provided a […]

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