George Kollios is an Associate Professor in the  Computer Science Department at Boston University in Boston, Massachusetts. He received his Diploma in Electrical and Computer Engineering in 1995 from the National Technical University of Athens, Greece; and the M.Sc.  and Ph.D. degree in Computer Science from Polytechnic University, New York in  1998 and 2000 respectively. His research interests include temporal and spatio-temporal indexing, data mining, database security, mutlimedia indexing, and approximation algorithms for data management problems.. His reserach has been supported by NSF, including an NSF CAREER Award. He is a member of ACM and IEEE Computer Society.