Table 6.

Parameters and MAPEs of the FGBM (1,1,$t^{\alpha }$) model based on different optimization algorithms(Case 2)

Algorithm	$r$(Parameter 1)	$\lambda$(Parameter 2)	$\alpha$(Parameter 3)	$\xi$(Parameter 4)	MAPE(%)	test_MAPE(%)
GWO	0.0005	0.4788	0.4393	0.0067	0.5090	0.7130
PSO	1.0000	0.5173	3.3792	0.0000	0.5893	0.9856
QGA	0.0045	0.5024	2.2159	0.0001	0.5126	7.7080