Dr. Vassilios Kountouriotis holds a B.Sc. in Informatics and Telecommunications (2005), a M.Sc. degree in Computational Science (2007) and a PhD in the field of Theoretical Computer Science and specifically Formal Language Theory and Logic Programming (2009) from the department of Informatics and Telecommunications of the National and Kapodistrian University of Athens. In his doctorate dissertation, he focused on overcoming important semantic shortcomings of Boolean grammars and the results are now part of the curriculum in universities worldwide. Vassilis has an extensive computer engineering and analysis background, complemented by his theoretical knowledge on computer science and informatics. He is currently employed by the Integrated Systems Laboratory of NCSR Demokritos as a Research Associate contributing to European Union funded projects (FP7), researching on realistic large crowd behavior modeling in real time.