“…However, the optimum solution could not be guaranteed. Up to date, the metaheuristic optimization techniques have been applied to solve the TPS and TTP problems, for example simulated annealing (SA) [9], artificial neural network (ANN) [10], tabu search (TS) [11], genetic algorithms (GA) [12], scatter search [13], particle swarm optimization [14], ant colony optimization [15] and adaptive tabu search (ATS) [16].…”