First of all, because it extracts data character of input spectrum by using PLS, so the dimensions of input variable of SVM modeling are decreased effectively.

The discrete variable representation(DVR) scheme is applied to investigate the photoelectron spectrum(PES) of multiphoton ionization for some diatomic molecules in strong fields.

Wavelength selection methods are variable selection techniques that allow calibration models to be constructed with a subset of spectral points instead of with the whole spectrum.