Table 3 Range of XGBoost parameters

max_depth

[3–8]

min_child_weight

[1–6]

gamma

[i/10.0 for i in range (0,5)]

subsample

[i/10.0 for i in range (6,10)]

colsample_bytree

[i/10.0 for i in range (6,10)]

reg_alpha

[0,1e-8,1e-7,1e-6,1e-5,1e-4,1e-3,1e-2,0.1,1,100]

reg_lambda

[0,1e-6,1e-5,1e-4,1e-3,1,10,100]