Table 7. Parameter settings for the GEP algorithm.
| Parameter | Settings |
|---|---|
| General | |
| Chromosomes | 100 |
| Genes | 5 |
| Head size | 8 |
| Gene size | 17 |
| Linking function | Addition |
| Function set | + － * / Exp Sqrt Log Logi Inv |
| Complexity increase | |
| Generations without change | 200 |
| Number of tries | 3 |
| Max. complexity | 5 |
| Genetic operators | |
| Mutation rate | 0.044 |
| Inversion rate | 0.1 |
| IS transposition rate | 0.1 |
| RIS transposition rate | 0.1 |
| One-point recombination rate | 0.3 |
| Two-point recombination rate | 0.3 |
| Gene recombination rate | 0.1 |
| Gene transposition rate | 0.1 |
| Numerical constants | |
| Constants per gene | 10 |
| Data type | Floating-point |
| Lower bound | -10 |
| Upper bound | 10 |