TABLE 3.

The performance statistics of support vector regressor (SVR), extreme gradient boosting (XGB), deep neural network (DNN), and random forest (RF) models for lettuce.

Model	Scenario	SI	T	U95	MBE
SVR	1	0.035	0.647	31.90	1.59
	2	0.032	0.015	29.35	0.034
	3	0.029	1.600	26.10	3.10
XGB	1	0.051	0.780	46.80	2.84
	2	0.031	0.110	28.70	–0.25
	3	0.027	0.540	24.80	1.04
DNN	1	0.037	0.630	34.50	1.70
	2	0.033	1.650	30.30	3.80
	3	0.035	1.630	31.90	3.95
RF	1	0.039	0.160	36.2	–0.45
	2	0.035	0.135	32.1	–0.34
	3	0.033	0.087	30.3	–0.21

SI, Scatter Index; Tstat, T-statistic test; U95, Uncertainty with a 95% confidence level; MBE, mean bias error.