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. 2021 Apr 14;23(4):e26211. doi: 10.2196/26211

Table 4.

Final values of the tuned hyperparameters in the extreme gradient boosting model.

Hyperparameter Value
Number of gradient-boosted trees 110
Maximum tree depth 3
Minimum sum of instance weight needed in a child 5
Boosting learning rate 0.094
Subsample ratio of the training instances 0.928
Subsample ratio of columns 0.474