Transfer by orthogonal projection: making near-infrared calibrations robust to between-instrument variation.
CHEMOMETR INTELL LAB
51 - 56.
The ability to transfer calibrations between near-infrared instruments is important for the acceptance and spreading of the technology. A method called transfer by orthogonal projection (TOP) is proposed for deriving calibrations that are robust to between-instrument variation, and thus may be transferred without adjustment. The idea is to orthogonalise the calibration spectra to directions in the spectral space in which most between-instrument variability lies. The method is related to the idea of a repeatability file, but has advantages over that approach when factor-based methods are used for calibration. Two examples are presented. In both of these, a calibration is successfully transferred to instruments not involved at all in its derivation. (C) 2004 Elsevier B.V. All rights reserved.
|Title:||Transfer by orthogonal projection: making near-infrared calibrations robust to between-instrument variation|
|Keywords:||calibration transfer, instrument standardisation, near-infrared, orthogonal projection, repeatability file, STANDARDIZATION|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
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