Performance of LDA calculation in different classification procedures.

<p>Identification errors, calculated by LDA using LOO algorithm, versus PC number, are presented in the figure. Black squares-the spectra were classified into the four categories of Vero, HSV-1, HSV-2, and VZV simultaneously. Red squares-the spectra were classified into two categories, control and infected. Blue square-the infected spectra were classified into three categories HSV-1, HSV-2 and VZV.