| Algorithm | Hyperparameter | Search values/range |
| Decision trees | Maximum depth | [3, 5, 7, 10] | Minimum samples split | [2, 5, 10, 20] |
| Naïve bayes | Smoothing parameter | [0.1, 0.5, 1.0, 1.5, 2.0] |
| K-nearest neighbors | Number of neighbors | [3, 5, 10, 20] | Weight function | [“uniform,” “distance”] |
| Support vector machine (SVM) | Kernel | [“linear,” “rbf,” “poly” | Regularization parameter (C) | [0.1, 1, 10, 100] | Gamma | [0.001, 0.01, 0.1, 1] |
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