“…But, in the recent years a variety of researches have started studying on it. Some of the applications of the GSA include: data clustering (Hatamlo et al 2011;Dowlatshahi and Nezamabadi-pour 2014), classification (Bahrololoum et al 2014;Saha and Chakraborty 2015), optimization of modular neural networks (Gonzalez et al 2015a, b), parameter optimization of a low amplifier (Shams et al 2015), reusable launch vehicle approach and landing trajectory optimization (Su and Wang 2015), feature selection (Xiang et al 2015;Han et al 2014), facial emotion recognition (Farahani et al 2014), training feedforward neural networks (Do 2015), dual channel speech enhancement (Prajna et al 2014), novconvex economic dispatch (Le et al 2015), web service selection problem (Zibanezhad et al 2011), path planning (Li and Duan 2012), optimization problems (Nezamabadi-pour 2015), unit commitment problem (Ji et al 2014;Yuan et al 2014) and so on.…”