Table 1: Discrimination accuracy of PC-SVM and PC-LDA models under different wavelength reduction rates (WRRs).

Number of wavelengths WRRs PC-SVM (%) PCA-LDA (%) 2847 (full) 1 100.0 100.0 1424 2 100.0 100.0 712 4 100.0 100.0 356 8 100.0 100.0 178 16 100.0 98.7 89 32 100.0 100.0 44 64 98.7 100.0 22 128 100.0 100.0 11 256 97.5 100.0 6 512 97.5 98.7