“…Some recent nature‐inspired meta‐heuristics include Whale Optimization (WOA) (Mirjalili & Lewis, 2016), Grasshopper Optimization (GOA) (Saremi, Mirjalili, & Lewis, 2017), Dragon Fly Algorithm (DA) (Mirjalili, 2015), Bio‐geography‐based Optimization (BBO) (Simon, 2008) and Bat Algorithm (BA) (Yang, 2010). Heuristic and meta‐heuristic approaches have been applied successfully to other constrained minimum spanning tree problems (MSTPs), such as the Leaf Constrained MSTP (Farzi & Dastjerdi, 2010; Julstrom, 2004a, 2004b; Prakash & Patvardhan, 2020); Minimum Labelling MSTP (Consoli, Moreno, Mladenovic, & Darby‐Dowman, 2009); Minimum Degree‐Constrained MSTP (Martins & DeSouza, 2009) and Bi‐objective Minimum Diameter‐Cost Spanning Tree Problem (Prakash, Chellapilla, & Srivastav, 2020; Santos, Lima, & Aloise, 2014), A more detailed review of meta‐heuristics and applications is given in Hussein, Mohd Salleh, Cheng, and Shi (2019).…”