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  • NIR Calibration Transfer
    that must be estimated; this is achieved by restricting the F-matrix to a banded matrix. The transformation matrix F relates each adjusted absorbance to the raw absorbance at the same wavelength and to a few wavelengths beside it, in effect sliding a narrow window along the raw spectrum to pick out
  • What is Frequency Domain Analysis?
    shifting interferometry (PSI), which allows us to transform the interference pattern electronically into a matrix of phase values. These phase values can then be directly related to relative height values, provided that the wavelength or optical frequency of the source light is known
  • Understanding Chemometrics for Pharmaceutical Analysis
    ; if they agree then they are most likely accurate. Very often, the measured spectra are not used as-is, but are subjected to various types of data transformations before being introduced into any calibration algorithm. The purpose of these transformations is to reduce or eliminate extraneous

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