Apple Variety Identification Using Near-Infrared Spectroscopy

Table 4

Classification accuracies of BPNN models.

Set	Calibration set		Prediction set
	PCA (%)	SPA (%)	PCA (%)	SPA (%)
Fuji apple from Shandong	80	76.67	45	40
Fuji apple from Shaanxi	0	0	0	0
Red Star apple from Shandong	43.33	53.33	55	20
Red Star apple from Shaanxi	86.67	70	30	30
Gala apple from Shandong	10	43.33	5	65
Gala apple from Shaanxi	60	66.67	45	75
Average	46.67	51.67	30	38.33