Tracing the Geographical Origins of Dendrobe (Dendrobium spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics

Table 2

Geographical origins traceability performance of traditional NIR spectra and NIR spectra with TMPP.

	Traditional NIR spectra	NIR spectra with TMPP
LVs	3	3
Mistake number of training sets	19	0
Mistake number of predicting sets	11	0
Accuracy rate of training set	91.85%	100%
Accuracy rate of predicting set	91.34%	100%
Accuracy	0.96	1
Sensitivity	0.94	1
Specificity	0.90	1