Rapid Discrimination of the Geographical Origins of an Oolong Tea (Anxi-Tieguanyin) by Near-Infrared Spectroscopy and Partial Least Squares Discriminant Analysis
Figure 4
Training (a) and predicting (b) results of PLSDA model based on NIR spectra with SNV preprocessed. Blue asterisks represent the ATT objects; green asterisks represent the NATT objects.
