“…Greedy heuristics have been retaken recently as shown in the works of Chen et al [266] and Yin and Wang [265] and have demonstrated the potential to solve complex versions of the WFDO problem. In addition, other approaches in the literature have successfully adopted different heuristics such as the Monte Carlo method [183,[187][188][189]238,239], pattern search algorithms [244], viral algorithms [255,256], Powell's method [257], particle filtering [204], bionic optimization [208], and customized local search algorithms [210,271]. The set of heuristics, however, have never been compared systematically to determine the best performer, thus resulting in an important topic of research.…”