Table 12.

Parameters and MAPEs of the FGBM (1,1,$t^{\alpha }$) model based on different optimization algorithms(Case 4)

Algorithm	$r$(Parameter 1)	$\lambda$(Parameter 2)	$\alpha$(Parameter 3)	$\xi$(Parameter 4)	MAPE(%)	test_MAPE(%)
GWO	0.0000	0.5671	4.0000	3.0000	0.1891	2.4410
PSO	0.0000	0.5671	4.0000	3.0000	0.1891	2.4410
QGA	0.0624	0.5545	0.1410	0.9082	0.1680	2.3515