Methodology for Estimating the Cost of Construction Equipment Based on the Analysis of Important Characteristics Using Machine Learning Methods

Table 6

Estimating the accuracy of a linear regression model.

Linear regression
Type of heavy machinery	Accuracy estimate
	R2_score	MAE	MSE	RMSE
Bulldozers	0.51	4440	33474659	5785
Loaders	0.58	4028	30658369	5537
Excavators	0.48	4750	38862756	6234