Journal of Electrical Systems and Information Technology

Table 3 Percentage forecast errors associated with the various models, for energy data for a laptop

From: Improvement of Grey System Model using Particle Swarm Optimization

	PSO-GM(1,1)	GM(1,1)	Method in [18]	Method in [19]
	– 0.1198	2.5480	– 5.3212	4.6466
	0.2862	1.8137	– 0.5175	3.9284
	0.8785	1.2619	4.2494	3.3879
	– 1.4172	– 2.2005	6.1185	0
MAPE	0.6754	1.9560	4.0516	2.9907

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