[1] University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, Croatia
[2] Zagreb School of Economics and Management, Zagreb, Croatia
[3] Laboratory for Machine Learning and Knowledge Representations, Rudjer Boskovic Institute, Zagreb, Croatia
[4] Luxembourg School of Business, Luxembourg,EU
[5] University of Rijeka, Faculty of Civil Engineering, Rijeka,51000, Croatia
[6] Faculty of Information Studies in Novo Mesto, Novo Mesto 8000, Eue