“…Recent years have witnessed significant advances in algorithm development for handling CLPs [Eley, 2002;Pisinger, 2002], and increased attention is now focused on intelligent algorithms, such as genetic algorithms [Gehring and Bortfeldt, 1997;Bortfeldt and Gehring, 2001], simulated annealing [Jin et al, 2004], and tabu search algorithms [Bortfeldt et al, 2003]. Furthermore, researchers have begun paying more attention to additional practical constraints.…”