“…Among them, swarm-based metaheuristic search, so called swarm intelligence methods, are one of the most well-known paradigms in nature-inspired algorithms. Due to its remarkable performance, they have dealt with a variety of applications, such as reliability [42,43], knapsack problems [44], quantitative interpretation [45], scheduling [46], path planning [47], parameter estimation [48], global numerical optimization [49][50][51], neural network training [52,53] and feature selection [54]. The KH method that is inspired by the krill herding behavior of krill in sea was first proposed by Gandomi and Alavi in 2012 [55,56].…”