Data Transforms in Chemometric Calibrations Part 4B: Continuation of the Discussion of Data Transforms for Continuous-Wavelength Spectra as well as Discrete-Wavelength Models

This column is the continuation of our previous column (1) that describes and explains some algorithms and data transforms beyond those most commonly used. We present and discuss algorithms that are rarely, if ever, seen or used in practice, despite that they have been proposed and described in the literature. These comprise algorithms used in conjunction with continuous spectra, as well as those used with discrete spectra. In our previous column, we examined calibration methods based on the use of classical least squares, Karl Norris’ derivative-ratio technique, and David Haaland’s post-calibration augmented-components technology.