Table II.

Description of the Random Forest algorithm hyperparameters and ranges.

Hyperparameter	Definition	Significance/usefulness	Grid search range
Mtry	Number of variables available for splitting at each tree node	The predictor variable/feature importance estimates are affected by mtry.	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15
Ntree	Number of trees to be grown in the model	Number of trees affects model variance. Increasing ntree increases performance and computation cost.	1, 5, 10, 100, 500, 1,000, 1,500, 2,000 and 2,500