Real-Time Release Testing of Herbal Extract Powder by Near-Infrared Spectroscopy considering the Uncertainty around Specification Limits

Table 2

PLS model characteristics for tanshinoneII_A.

Pretreatment	LVs	Calibration set				Validation set
		rcal	RMSEC	RMSECV	BIAScal	rval	RMSEP	RPD	BIASval
Origin	12	0.9840	1.322	2.012	0.999	0.9966	1.288	11.4	1.035
1std	10	0.9969	0.947	1.849	0.696	0.9970	1.141	12.8	0.807
2ndd	8	0.9991	0.512	1.775	0.376	0.9981	0.934	15.6	0.744
S-G	12	0.9938	1.338	2.040	1.012	0.9965	1.312	11.2	1.052
MSC	12	0.9970	0.938	2.023	0.739	0.9974	1.087	13.5	0.849
SNV	11	0.9973	0.891	1.674	0.622	0.9979	1.009	14.5	0.553
WDS	12	0.9896	1.736	2.478	1.292	0.9925	1.947	7.5	1.494