Table 4. Distribution of studies according to hyperparameter tuning methods.
| Hyperparameter tuning methods | Studies (n=113), n (%) |
| Not reported | 44 (38.9) |
| Ad hoc | 31 (27.4) |
| Random search | 1 (0.9) |
| Grid search | 27 (23.9) |
| Others | 10 (8.8) |
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