Grigorios Tzortzis received his B.Sc. and M.Sc. degrees in Computer Science from the University of Ioannina, Greece, in 2006 and 2008, respectively. In 2014, he received his Ph.D. degree in Machine Learning from the same institution (Thesis title: “Clustering using similarity and kernel matrices”). He has worked as an instructor at the Technological Educational Institute (T.E.I) of Epirus, Greece from 2007 to 2013. Currently he is a research associate at the Institute of Informatics and Telecommunications, NCSR “Demokritos”, Greece. Grigorios has published several papers in international conferences and journals. His research interests include machine learning, data mining, bioinformatics and semantic web.