“…It is revealed from the literature that researchers had attempted single objective optimization of milling process parameters to achieve desired effects like surface roughness, production rate, machining time, production cost, tool life, and cutting force. Various methods attempted by the researchers for minimization of surface roughness include genetic algorithm (Brezocnik & Kovacic, 2003;Corso et al, 2012), simulated annealing (Corso et al, 2012), and particle swarm optimization (Prakasvidhisarn et al, 2009). The attempts are also made by researchers to maximize the production rate (or minimize machining time) using genetic algorithm (Aggarwal & Xirouchakis, 2012), simulated annealing (Rao & Pawar, 2010), artificial bee colony (Rao & Pawar, 2010), particle swarm optimization (Rao & Pawar, 2010;Gao et al, 2012), harmony search algorithm (Zarei et al, 2009), cuckoo search algorithm (Yildiz, 2012), and teaching learning based optimization algorithm (Pawar & Rao, 2013).…”