Table 1: Parameter settings for best GP result.

ParameterTested values

Maximum generations70, 100
Mutation probability [%]10, 15
Population size70
Selector MutatorTournament sector
Multisymbolic expression tree manipulator: replace branch manipulation, change node type manipulation, full tree shaker, one point shaker
Maximum expression tree depth8, 10
Maximum expression tree length25, 50, 80
Symbolic expression tree grammarLogical operators (the corresponding expression tree symbol set implemented in Heuristic-Lab contains too numerous functions to be mentioned here. Generally, it contains all usually handled logic operators).