Table 1: Parameter settings for the MGGP algorithm.

ParameterSettings

Population size200, 500, 1000
Number of generations 200, 500, 1000
Maximum number of genes allowed in an individual1, 3, 6
Maximum tree depth4, 6
Tournament size 12
Elitism0.01% of population
Crossover events0.1, 0.85
High level crossover0.2
Low level crossover0.8
Mutation events0.1, 0.85
Subtree mutation0.9
Function set+, −, ×, /, , exp, ln, sin, cos