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Table 2

Parameters of the GEP model applied in present study

ParametersDefinitionSetting of parameter
P1 Function set +, −, *, /, √, x2 
P2 Chromosomes 30 
P3 Head size 
P4 Number of genes 
P5 Linking function Addition 
P6 Fitness function Root mean square error (RMSE) 
P7 Mutation rate 0.044 
P8 Inversion rate 0.1 
P9 One-point recombination rate 0.3 
P10 Two-point recombination rate 0.3 
P11 Gene recombination rate 0.1 
P12 Gene transposition rate 0.1 
ParametersDefinitionSetting of parameter
P1 Function set +, −, *, /, √, x2 
P2 Chromosomes 30 
P3 Head size 
P4 Number of genes 
P5 Linking function Addition 
P6 Fitness function Root mean square error (RMSE) 
P7 Mutation rate 0.044 
P8 Inversion rate 0.1 
P9 One-point recombination rate 0.3 
P10 Two-point recombination rate 0.3 
P11 Gene recombination rate 0.1 
P12 Gene transposition rate 0.1 
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