“…The authors have shown improved modelling accuracy in terms of mean square error over the ones based on CSO , PSO (Chen and Luk, 2010;Majhi et al, 2008), QPSO (Fang et al, 2006), MuQPSO (Fang et al, 2010b), DE (Karaboga, 2005), ABC (Karaboga, 2009), GSA (Rashedi et al, 2011), SOA (Dai et al, 2010), PSO-QI (Luitel and Venayagamoorthy, 2010), AIW-PSO (Yu et al, 2009) and real coded GA. In all the examples, the authors have shown that HSA require a higher computational time than PSO.…”