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

Table 7

Estimating the accuracy of a polynomial regression model.

Polynomial regression
Type of heavy machinery	Accuracy estimate
	R2_score	MAE	MSE	RMSE
Bulldozers	0.53	4339	31792103	5638
Loaders	0.62	3834	26440164	5142
Excavators	0.47	4455	36056019	6004