Rapid Identification of Nine Easily Confused Mineral Traditional Chinese Medicines Using Raman Spectroscopy Based on Support Vector Machine

Table 6

Results of PCA-SVM models based on different pretreatment methods.

Pretreatment method	NPC	Parameter optimization	C		Accuracy (%)
					3-CV	Training set										Validation set
						1	2	3	4	5	6	7	8	9	Total	1	2	3	4	5	6	7	8	9	Total
Original	6	GS	9.1896	5.2780	93.06	100	100	100	50	83.33	100	100	100	100	94.44	100	100	100	25	100	100	100	100	100	91.67
VN	6	GS	3.0314	9.1896	98.61	100	100	100	100	83.33	100	100	100	100	98.61	100	100	100	100	100	100	100	100	100	100
FD	6	GA	0.3272	16.5711	93.06	100	100	100	66.67	66.67	100	100	100	87.5	93.06	100	100	100	50	100	100	100	100	100	94.44
SD	6	PSO	1.0047	7.1087	88.89	100	100	100	83.33	100	100	100	100	100	98.61	100	100	100	25	75	100	100	100	100	88.89
VN + FD	6	GA	1.4940	9.4271	95.83	100	100	100	83.33	83.33	100	100	100	100	97.22	100	100	100	100	100	100	100	100	100	100
VN + SD	6	PSO	6.4480	4.2768	94.44	100	100	100	66.67	66.67	100	100	100	100	94.44	100	100	100	100	100	100	100	100	100	100