“…Approaches in research which apply the use of combined techniques such as the current one include neuro fuzzy methods (Nauck & Kruse, 1999), the appli cation of genetic algorithms (GAs) for rule selection (Ishibuchi, Nakashima, & Murata, 1999), or the unification of genetic algo rithms with fuzzy clustering techniques (Roubos & Setnes, 2000). Other methods apply a single approach, applying neural networks, GAs, or fuzzy inference systems (e.g., Jang, 1993;Pena Reyes & Sip per, 1999;Song, Lee, Kim, & Park, 2005).…”