DB group

NTNU Data and Information Management Group

The data and information management research group (DIF) is part of the Department of computer and information science (IDI), which is the principal computer science department at the Norwegian University of Science and Technology (NTNU) in Trondheim, Norway.

These web pages provide information about the people in our group, outline our present courses and present our current research activities. In addition, you can find information regarding some of our past research projects, as well as a fairly complete overview of the publications that has been produced during the years.


Sean Chester, Orestis Gkorgkas and Kjetil Nørvåg Top-k Dominating Queries, in Parallel, in Memory Proceedings of EDBT'2016, Bordeaux March 2016
Santiago Larrain, Christoph Trattner, Denis Parra, Eduardo Graells-Garrido and Kjetil Nørvåg Good Times Bad Times: A Study on Recency Effects in Collaborative Filtering for Social Tagging Proceedings of the 9th ACM Conference on Recommender Systems (RecSys 2015), Vienna, Austria September 2015
Orestis Gkorgkas, Akrivi Vlachou, Christos Doulkeridis and Kjetil Nørvåg Maximizing Influence of Spatio-Textual Objects Based on Keyword Selection Proceedings of SSTD'2015, Seoul, South Korea August 2015
Nattiya Kanhabua, Roi Blanco and Kjetil Nørvåg Temporal Information Retrieval Foundations and Trends in Information Retrieval, Now Publishers July 2015
Tomasz Kusmierczyk, Christoph Trattner and Kjetil Nørvåg Temporal Patterns in Online Food Innovation Proceedings of TempWeb'2015 (WWW Companion Volume), Firenze, Italy May 2015

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