Table 9.

Parameters and MAPEs of the FGBM (1,1,$t^{\alpha }$) model based on different optimization algorithms(Case 3)

Algorithm	$r$(Parameter 1)	$\lambda$(Parameter 2)	$\alpha$(Parameter 3)	$\xi$(Parameter 4)	MAPE(%)	test_MAPE(%)
GWO	0.2262	0.5336	3.8539	0.1932	0.1095	0.8011
PSO	0.2731	0.5320	3.6715	0.0000	0.1076	0.6854
QGA	0.2187	0.5337	3.9843	0.2037	0.1100	1.2388