Discrete Bat Algorithm for Optimal Problem of Permutation Flow Shop Scheduling

Algorithm 4

The pseudocode of loudness local operation.

for   each individual

                   Compute loudness by (7);

             if  rand >

                          /*  random sub-sequence inserting  */

                          Randomly select a length of sub-sequence;

                          Randomly determine the sub-sequence with selected length in ;

                          Insert this sub-sequence into a random location in remainder sequence;

             else

                          /*  random sub-sequence inverse  */

                          Randomly select a length of sub-sequence;

                          Randomly determine the sub-sequence with selected length in ;

                          Perform inverse operation on selected sub-sequence;

                          Replace original sub-sequence with inverted sub-sequence

             end if

end for