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

Table 5

Prediction performance of GH model.

Pretreatment methods	LVs	Cross validation		Test-set validation (0		Test-set validation 65		Test-set validation 80		Test-set validation 100
		RMSECV		RMSEP		RMSEP		RMSEP		RMSEP
RAW	5	0.763	0.6903	0.814	0.7657	0.747	0.8031	0.707	0.8292	0.635	0.8862
MSC	2	0.716	0.7278	0.716	0.8293	0.654	0.8551	0.621	0.8628	0.538	0.9123
1D + SG	7	0.602	0.8229	0.687	0.8420	0.621	0.8473	0.566	0.8909	0.566	0.8929
2D + SG	4	0.624	0.8025	0.671	0.8621	0.596	0.8815	0.612	0.8651	0.540	0.9065
MSC + 1D + SG	6	0.606	0.8276	0.575	0.8971	0.481	0.9279	0.524	0.9137	0.545	0.9146
MSC + 2D + SG	3	0.678	0.7621	0.690	0.8538	0.664	0.8552	0.618	0.8648	0.522	0.9126
MSC + 1D + ND	6	0.609	0.8821	0.672	0.8508	0.580	0.8873	0.631	0.8655	0.765	0.8371
MSC + 2D + ND	6	0.566	0.8450	0.621	0.8757	0.527	0.9099	0.583	0.8863	0.603	0.8879