The web crawler space is often delimited into two general areas: full-web crawling and focused crawling. We present netSifter, a crawler system which integrates features from thes...
Contextual text mining is concerned with extracting topical themes from a text collection with context information (e.g., time and location) and comparing/analyzing the variations...
DejaVu is an event processing system that integrates declarative pattern matching over live and archived streams of events on top of a novel system architecture. We propose to dem...
Science requires collaboration. In this paper, we investigate the feasibility of coupling current social networking techniques to science gateways to provide a scientific collabor...
On photo sharing websites like Flickr and Zooomr, users are offered the possibility to assign tags to their uploaded pictures. Using these tags to find interesting groups of sem...