Robust PLS Prediction Model for Saikosaponin A in Bupleurum chinense DC. Coupled with Granularity-Hybrid Calibration Set

Table 4

Local model performance of different granularity.

Model	LVs	Cross validation		Test-set validation		RPD
		RMSECV		RMSEP
40	4	0.682	0.7671	0.650	0.8519	1.95
65	4	0.574	0.8347	0.492	0.9221	2.58
80	3	0.567	0.8408	0.534	0.9070	2.38
100	3	0.664	0.7484	0.522	0.9162	2.43