Table 1.

The discrimination results of calibration and validation sets by different calibration models.

Parameters	Method I	Method II	Method III	Method IV	Method V
PCs/LVs/Sw/Sv a	6	6	389	151	5
Calibration Set
Rb	0.9845	0.9539	0.9864	0.9844	0.9943
RMSECc	0.1433	0.2540	0.1351	0.1472	0.0878
Validation Set
Rb	0.9511	0.9256	0.9844	0.9950	0.9950
RMSEP c	0.2718	0.3194	0.1472	0.0829	0.0827

^aPCs/LVs/Sw/Sv: Principle components/latent variables/Selected wavelengths/Selected variables.

^bR: correlation coefficient.

^cRMSEC/RMSEP: root mean square error of calibration or prediction.