Table 1.
Sample class index and number of samples of each fold in k-fold cross-validation (k = 5)

Species	Class index	Fold 1	Fold 2	Fold 3	Fold 4	Fold 5	Number of samples
Cedar	0	20	21	16	20	29	106
Cypress	1	18	26	21	20	17	102
Korean Pine	2	19	22	19	19	26	105
Korean Red Pine	3	18	17	25	20	15	95
Larch	4	18	10	14	16	9	67
Total		93	96	95	95	96	475