Cost Index Predictions for Construction Engineering Based on LSTM Neural Networks

Table 5

Effects of the input features on the model’s accuracy.

Model	Dimension	Category	Indicators	MSE	Model accuracy
M1	4	Economy	LR, CPI, MS, GDP	3.92	98.71
M3	10	Construction market	MCI, FSS, SBP, CP, CEP, MSP, GRP, GLP, WP, BP	1.27	99.22
M12	6	Economy + energy	MCI, CPI, MS, GDP, COP, DP	3.16	98.85
M123	16	All	All	1.03	99.29