Table 1: PLS model characteristics for cryptotanshinone.

PretreatmentLVsCalibration setValidation set
rcalRMSECRMSECVBIAScalrvalRMSEPRPDBIASval

Origin110.98210.4700.6400.3800.97120.58354.30.440
1std100.9900.3440.5570.2610.97370.5284.70.376
2ndd100.99920.1020.4220.0840.98180.4665.30.341
S–G110.98190.4720.6420.3810.97090.5874.20.441
MSC120.98720.3970.7080.3050.97610.5364.60.399
SNV120.98600.3860.6640.3250.97130.5834.30.420
WDS110.99600.6440.9120.5350.95160.7553.30.623