Uninformative Biological Variability Elimination in Apple Soluble Solids Content Inspection by Using Fourier Transform Near-Infrared Spectroscopy Combined with Multivariate Analysis and Wavelength Selection Algorithm

Table 2

Prediction results for SSC by PLS with different pretreatments in calibration, validation, and prediction processes.

Pretreatment	LVs	Calibration		Cross-validation		Prediction
		Raw	14	0.9532	0.2764	0.9066	0.3903	0.8720	0.4197
S-G	14	0.9429	0.3053	0.9052	0.3933	0.8863	0.4079
MSC	14	0.9681	0.2282	0.9107	0.3816	0.8429	0.4795
SNV	13	0.9513	0.2817	0.9050	0.3937	0.8834	0.4132
MeanN	13	0.9476	0.2923	0.9081	0.3873	0.8816	0.4163
S-G and MSC	14	0.9478	0.3067	0.9177	0.3565	0.8902	0.3998
S-G and MeanN	14	0.9474	0.3063	0.9089	0.3756	0.8883	0.4044
MSC and MeanN	14	0.9681	0.2282	0.9107	0.3816	0.8429	0.4795
MSC and SNV	13	0.9514	0.2817	0.9050	0.3904	0.8834	0.4131