“…These approaches include, but not limited to, tabu search (Nowicki and Smutnicky, 1996), simulated annealing (Matsuo et al, 1988;Van Laarhoven et al, 1992), genetic algorithm (Goncalves et al, 2005;Yamada and Nakano, 1995), ant colony optimization (Udomsakdigool and Kachitvichyanukul, 2006), particle swarm optimization (PSO) (Pongchairerks and Kachitvichyanukul, 2009a;Rookkapibal and Kachitvichyanukul, 2006), and differential evolution (Liu et al, 2009;Wisittipanich and Kachitvichyanukul, 2012). The number of research works on multi-objective JSP is much less than that for single objective JSP.…”