“…Since the placement problem is proven to be NP-hard in the general case [14][15], [28][29], [34][35], alternative algorithms using different techniques are presented to solve it. Ant colony optimization (ACO) [14], [36], genetic algorithm (GA) [15][16], [30], greedy algorithm [4], [28], [33], game theory [32], and biogeography-based optimization (BBO) [37] are some of the heuristic or metaheuristic methods. Furthermore, some other models like graph [5], [8], [29], [33], approximation algorithms [38], and linear programming [9-10], [33] have been widely used to solve the problem.…”