“…However, the use of other probability distributions may improve the ability to fine-tune or even escape from local optima. In the meantime, it has been proposed that the Gaussian and/or Cauchy probability distributions be used to generate random numbers to update the velocity equation (Miranda and Fonseca, 2002;Wei et al, 2002, Secrest et al, 2003Stacey et al, 2003;Esquivel and Coello, 2003;Higashi and Iba, 2003;Coelho and Krohling, 2005;Ting et al, 2006;Coelho, 2006, Coelho andAlotto, 2008;Coelho and Lee, 2008).…”