Complex System Optimization Using Biogeography-Based Optimization

Algorithm 2

Similarity level calculation. 𝑈 and 𝑉 are the sets of objectives or constraints of two islands (candidate solutions).

SL = 0;

for each 𝑢 ∈ 𝑈

   for each 𝑣 ∈ 𝑉

      if 𝑢 and 𝑣 are the same type then

         SL = SL + 1

      end if

   end for

end for