A New Genetic Algorithm Methodology for Design Optimization of Truss Structures: Bipopulation-Based Genetic Algorithm with Enhanced Interval Search

Algorithm 2

Pseudocode for BGAwEIS.

BGAwEIS (SubPopNum =1, SubPopIndNum = SP, SSR,NDV,NG, NGGES, NSBS, Par_mut,

Par_cr, Par_sel)

Initialize (𝑃_𝑖, SupPopNum, SupPopIndNum)

[𝑃_cor]=𝑃_𝑖

[Par^𝑑_cor]=𝑃_𝑖

If required, [Par^𝑑_cor]=Decoding(𝑃_cor),

[𝐹_cor,FeasPool]=Fitness_Calculation(Par^𝑑_cor)

for 𝑖=1: NG

[𝑃_inw, 𝑃_outw] = Extraction_based_transmission(𝐹_cor, 𝑃_cor, FeasPool)

[𝐹_inw, 𝐹_outw, FeasPool] = Fitness_Calculation(𝑃_inw, 𝑃_outw)

[𝑃_cor] = Insertion_based_transmission(𝐹_inw, 𝑃_outw, 𝑃_inw, 𝑃_outw, FeasPool)

[𝑃_cor, NSBS] = Re-creation_Population(𝐹_inw, 𝐹_outw, 𝑃_inw, 𝑃_outw, SSR, NSBS, FeasPool)

[𝑃_cor] = SGA(𝑃_cor, NG=1, SP, 𝐹_cor, Par_sel, Par_mut, Par_cr)

[Par^𝑑_cor]=𝑃_cor

If required, [Par^𝑑_cor] = Decoding (𝑃_cor),

[𝐹_cor, FeasPool] = Fitness_Calculation (Par^𝑑_cor)

end