Intelligent Prediction of the Construction Cost of Substation Projects Using Support Vector Machine Optimized by Particle Swarm Optimization

Table 4

Prediction error of different models.

	GM (1, n)	SVM	PSO-SVM	PCA-SVM	PCA-PSO-SVM
MAPE	19.16%	17.10%	10.21%	11.57%	6.21%
RMSE	11.52	11.73	6.72	6.63	3.62