Table 6. Confusion matrix of Pinus koraiensis by machine learning algorithms.

				Reference data
Random Forest	Class	Dominant	Co-dominant	Intermediate	Overtopper	Total
	Dominant	186	74	6	1	267
	Co-dominant	40	44	21	3	108
	Intermediate	5	9	9	2	25
	Overtopper	−	−	2	8	10
	Total	231	127	38	14	410
XGboost	Dominant	167	67	9	2	245
	Co-dominant	60	48	18	1	127
	Intermediate	3	11	9	3	26
	Overtopper	1	1	2	8	12
	Total	231	127	38	14	410
Light GBM	Dominant	163	61	7	2	233
	Co-dominant	65	55	20	1	141
	Intermediate	3	10	8	3	24
	Overtopper	−	1	3	8	12
	Total	231	127	38	14	410