An Enhanced Discrete Artificial Bee Colony Algorithm to Minimize the Total Flow Time in Permutation Flow Shop Scheduling with Limited Buffers

Algorithm 4

Combined local search.

(1) apply ILS to

(2) while (true)

(3)  apply SLS to

(4)  if ( is not improved during the previous Step)

(5)   break

(6)  endif

(7)  apply ILS to

(8)  if ( is not improved during the previous Step)

(9)   break

(10)  endif

(11) endwhile