Prediction of Mechanical Properties of Aluminium Alloy Strip Using the Extreme Learning Machine Model Optimized by the Gray Wolf Algorithm

Table 8

Distribution of prediction errors for the three model test sets.

Mechanical properties	Name	Prediction value deviation (%)
		[0, 5]	[5, 10]	[10, 15]	[15, 20] set	[20, +∞]
		Correct ratio (%)
Tensile strength	GWO-ELM	95	5	0	0	0
	MGWO-ELM	95	2.5	0	0	2.5
	ELM	65	15	15	0	5
Yield strength	GWO-ELM	87.5	10	5	2.5	2.5
	MGWO-ELM	62.5	30	2.5	2.5	2.5
	ELM	37.5	25	7.5	7.5	22.5
Elongation	GWO-ELM	57.5	20	12.5	5	5
	MGWO-ELM	42.5	25	10	7.5	15
	ELM	12.5	25	7.5	15	40