Table 1.

Comparison of prediction algorithms.

Model	Training set			Testing set
	R2	MAE	MBE	R2	MAE	MBE
GA–SVR	0.9960	1.7800	− 0.0742	0.8601	9.2341	2.9112
SVR	0.6974	9.9612	− 1.2350	0.7284	13.9492	− 6.9973
BP	0.5412	14.1563	− 2.5174	0.5410	15.8081	− 11.9257
RF	0.9328	4.7816	0.0648	0.7073	13.8018	− 7.3491