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

Table 3

Forecasting result of the ten test samples.

Project	Actual unit capacity cost (USD/kVA)	Forecasting unit capacity cost (USD/kVA)	Absolute error	Relative error (%)
Project I	57.11	59.17	2.06	3.61
Project II	60.17	56.90	3.28	5.44
Project III	51.46	53.23	1.77	3.43
Project IV	56.80	62.65	5.85	10.30
Project V	57.42	55.59	1.82	3.17
Project VI	51.32	45.17	6.15	11.98
Project VII	47.37	46.26	1.11	2.35
Project VIII	35.63	32.65	2.98	8.37
Project IX	53.24	48.45	4.79	9.00
Project X	46.90	48.96	2.06	4.40