Kostas Patroumpas is a Research Associate at the Information Management Systems Institute at Athena Research Center (Greece) and also a member of the Knowledge & Database Systems Laboratory at the National Technical University of Athens (NTUA). He holds a Diploma (1994) in Computer Engineering from the University of Patras and a M.Sc. (2003) in Geoinformatics from NTUA. His research interests relate to geospatial data stream processing, trajectory data management, linked data, and geographical visualization of complex phenomena. He has been involved in several national and EU/FP7 research projects, and he has published more than 30 articles in international journals and conferences.