His research interests include multimedia databases, spatio-temporal databases, and similarity search in high-dimensional spaces. He has held visiting professor positions at various institutions including National Institute of Informatics (Tokyo, Japan), Telecom-ParisTech (Paris, France), Université de Paris- Dauphine (Paris, France), INRIA (Roquencourt, France), Conservatoire National des Arts et Métiers (Paris, France), Chinese University of Hong Kong (Hong Kong, China) and Hubei University of Science and Art (Xiang Yang, China). He is the recipient of the 2014 Outstanding Achievement in Research Award for the NJIT College of Computing Sciences.