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SPEAKER: |
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TITLE: |
"Variable selection and a simple alternative to PLS in chemical calibrations" |
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DAY: |
Monday, June 18, 2001 |
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TIME: |
11:00 a.m. |
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PLACE: |
BSB-108 |
We present some recent results in wavelength selection and calibration. The selection methods that we use work in real time and are 100's of times faster than the popular genetic algorithms. Our methods produce comparable results. We also show that, contrary to claims in the chemical literature, there is no clear choice, typically, between direct or inverse calibration when some calibration ingredients are unknown. Finally, we present our parallel calibration method. It is the simplest modern calibration method, from all points of view, and the highly effective for spectral calibrations.
Joint work with Marina Vannucci, Jerome Bennett, Mike McShane Gerry Coté, Sang-Joon Lee, and Frits Ruymgaart.
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Clifford H. Spiegelman is a Professor in the Department of Statistics at Texas A & M University, College Station. His research interests include Calibration Curves, Nonparametric Curve Fitting, and Applications of Statistics, particularly to Chemistry |
