“…Recently, explicit mathematical formulation of ET 0 can be done by using gene-expression programming (GEP) Guven, 2012, 2013;Shiri et al, 2012Shiri et al, , 2014a. Support vector machine (SVM) (Vapnik, 1995(Vapnik, , 1998 is one of the novel soft learning algorithms that has been recently realized for a wide range of applications in the field of soft computing, hydrology and environmental studies (Lee and Verri, 2003;Lu and Wang, 2005;Asefa et al, 2006;Ji and Sun, 2013;Sun, 2013).…”