There are many instances where a single chemometric model may not provide optimal results for a particular application. In these situations, it may be possible to develop a set of models, each more focused on a particular subset of data. How might these models be deployed? Continue reading
Infometrix announces an agreement with Northwest Analytical to incorporate Pirouette technology into their Quality Analyst SPC system.
NWA and Infometrix have partnered to create a fully integrated solution for multivariate modeling and SPC charting that overcomes many of the barriers to the adoption of multivariate process monitoring and improvement techniques. NWA Quality Analyst’s new multivariate SPC module, NWA MvSPC™, combines with Infometrix Pirouette to simplify the data collection, model-building, and deployment process for off-line and real-time applications.
The combination of Quality Analyst’s connectivity and ease-of-use with Infometrix Pirouette’s industry-leading multivariate analysis capabilities provides a complete, integrated, multivariate modeling and SPC analytics solution. NWA MvSPC seamlessly integrates NWA Quality Analyst and Infometrix Pirouette, unifying multivariate modeling and SPC charting and analysis.
Multivariate models produced by Pirouette are incorporated into Quality Analyst Data Set definitions, simplifying analysis and reporting. The same Data Set and database connection is used for model building and ongoing univariate and multivariate SPC charting and analysis. Data Sets can be connected to any industrial or laboratory database and can contain a combination of model and non-model variables, simplifying data structures, analysis, and reporting. Real-time multivariate SPC is provided by NWA Quality Analytics Server using the same Data Sets and model definitions created for off-line SPC charting and analysis. NWA MvSPC requires models created by the current version of Infometrix Pirouette, used to build the multivariate model.
In this post, we outline the integration of retention time alignment such that the correction of chromatographic peak position can be done as part of a method. The technical underpinnings of the algorithm in LineUp come from the literature describing Correlation Optimized Warping, or COW, which was brought into active research by the Danish Technical University a decade ago. But, having an algorithm and using it as part of a routine process in a lab or on-line are very different topics; we focus here on the effective integration of alignment into a chromatographic instrument method. Continue reading
Of Special Interest: Portable Multi-product Dongle Licenses
With a slate of product releases, Infometrix has added a new licensing mechanism: if you need to have a portable license, a dongle (USB-compatible device) with a product license (or licenses) can now be obtained. Particularly useful for applications in which the computer where the software will run does not have internet access, the dongle is also an option for a multi-user situation.
The key can be moved from one computer to another without needing to return and reissue a license. The previous static license that you obtain from Infometrix and register via a software utililty is still available. For more information about the dongle or for advice on choosing which way to go, contact us.
Essentially, all models are wrong, but some are useful.
Empirical Model-Building and Response Surfaces. GEP Box and NR Draper. John Wiley & Sons, 1987, p. 424.