Soil Classification Based on Deep Learning Algorithm and Visible Near-Infrared Spectroscopy

Table 3

The number of the calibration set samples by Kennard–Stone algorithm.

The total number of calibration set	Type 1 orchards	Type 2 woodlands	Type 3 tea plantations	Type 4 farmlands	Type 5 bare lands	Type 6 grasslands
150	22	51	13	28	13	23
140	20	50	13	25	13	19
130	19	46	13	23	13	16
120	18	40	13	20	13	16
110	18	35	11	18	13	15
100	17	32	11	17	12	11
90	14	28	10	16	12	10
80	13	26	8	13	11	9
70	10	25	8	9	10	8
60	9	20	7	9	8	7
50	5	16	7	8	7	7
40	4	13	5	7	6	5