Analysis of plot-level volume increment models developed from machine learning methods applied to an uneven-aged mixed forest

Table 6 Comparison of fit statistics of the methods tested in this study

Method	R²	RMSE	%RMSE
Statistical (regression) method	0.81	0.52	22.0
Artificial neural network	0.92	0.19	8.6
Support vector machine	0.91	0.33	14.9
Random forest	0.89	0.52	22.2
Nearest neighbor algorithm	0.75	0.78	36.5

ISSN: 1297-966X