Open Access
Table 2
Set of possible values used for the hyperparameter grid search in iteration 2.
| Hyperparameter | DS0 | DS1 | DS2 | DS3 | DS4 | DS5 | DS6 | DS7 |
|---|---|---|---|---|---|---|---|---|
| colsample_bytree | 3/5, 2/3, 3/4 | 2/5, 1/2, 3/5 | 1/5, 1/3, 2/5 | 2/5, 1/2, 3/5 | 2/5, 1/2, 3/5 | 2/5, 1/2, 3/5 | 2/5, 1/2, 3/5 | 2/5, 1/2, 3/5 |
| 0.03 | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0.01 | 0.01 | |
| eta | 0.04 | 0.02 | 0.02 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 |
| 0.05 | 0.03 | 0.03 | 0.04 | 0.04 | 0.04 | 0.03 | 0.03 | |
| gamma | 0, 1,3 | 5, 10, 15 | 1, 3, 5 | 0, 1, 3 | 0, 1, 3 | 0, 1, 3 | 0, 1, 3 | 5, 10, 15 |
| max_depth | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L | 7L, 8L, 9L |
| min_child_weight | 15L, 20L, 25L | 15L, 20L, 25L | 15L, 20L, 25L | 15L, 20L, 25L | 5L, 10L, 15L | 5L, 10L, 15L | 5L, 10L, 15L | 5L, 10L, 15L |
| subsample | 0.90, 0.95, 1.0 | 0.90, 0.95, 1.0 | 0.90, 0.95, 1.0 | 0.90, 0.95, 1.0 | 0.85, 0.90, 0.95 | 0.85, 0.90, 0.95 | 0.90, 0.95, 1.0 | 0.85, 0.90, 0.95 |
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