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

Table 12

Importance of the variables for the slots dataset M2.

Variable	Importance	Relative Importance	Percentage (%)
Axial Depth of Cut	62.5060	1.0000	38.09
Diameter of the Tool	51.2562	0.8200	31.23
Rotation Speed	23.4585	0.3753	14.29
Number of Teeth	17.0898	0.2734	10.41
Advance Rate	9.8038	0.1568	5.97