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

Table 5

Discretization of the continuous variables of the Exp-2 model.

State	HB	ae	ap	Ra
	[lower, upper)			[lower, upper)
0		0.5	5	Smooth =
1		0.5	5	Fine =
2		1	10	Semi-Fine =
3		1	10	Ground =