Age Discrimination of Chinese Baijiu Based on Midinfrared Spectroscopy and Chemometrics

Table 4

Classification results of spirit samples by different models.

Preprocessing methods	Calibration set		Prediction set
	Accuracy (percentage %)	Samples of misclassified	Accuracy (percentage %)	Samples of misclassified
PCA-BP	93.33	4	95.00	1
PCA-RBF	90.00	6	90.00	2
PCA-SVM	96.67	2	95.00	1
PCA-GS-CV-SVM	100	0	100	0