Gradient Boosted Trees Predictive Models for Surface Roughness in High-Speed Milling in the Steel and Aluminum Metalworking Industry

Table 16

Importance of the variables for the M2 geometries dataset.

Variable	Importance	Relative Importance	Percentage (%)
Diameter of the Tool	169.6404	1.0000	33.13
Rotation Speed	119.9600	0.7071	23.42
Hardness of the Material	97.2817	0.5735	19.00
Radial Depth of Cut	92.2594	0.5439	18.02
Advance Speed-Feed Rate	17.5635	0.1035	3.43
Axial Depth of Cut	15.4129	0.0909	3.00