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

Table 10

Importance of the variables for the slots dataset M1.

Variable	Importance	Relative Importance	Percentage (%)
Axial Depth of Cut	219.5075	1.0000	47.15%
Ration Speed	107.3826	0.4892	23.06%
Diameter of the Tool	86.7459	0.3952	18.63%
Advance Speed	49.5846	0.2259	10.65%
Number of Teeth	2.3563	0.0107	0.51%