Table 7 Parameters setting for tuning the MGGP.
Variable ID | Settings |
---|---|
Population size | 100, 200, 500 |
Number of generations | 100, 200, 500 |
Maximum number of genes allowed in an individual | 1–3 |
Maximum tree depth | 1–3 |
Tournament size | 12 |
Elitism | 0.01 |
Crossover events | 0.85 |
High-level crossover | 0.2 |
Low-level crossover | 0.8 |
Mutation events | 0.1 |
Sub-tree mutation | 0.9 |
Function set | Exp, Cube,\(\sqrt {}\), \(\times\), \(+\), \(-\),\(/\) |