Svein Erik Bratsberg

Professor Department of Computer Science Faculty of Information Technology and Electrical Engineering

IT-bygget, 209, Gløshaugen, Sem Sælands veg 9

Phone: +47 73550382

Professor at NTNU/IDI since aug 2001 in distributed systems with focus on databases and search engines. Previously employed in Clustra which developed highly available, scalable real-time databases. In the years 2007-14 I worked on the SFI iAD - information access disruptions, where Microsoft was the centre leader. This was work on next generation search engines, where the focus at NTNU was on scalabale indexes and structured queries. The research focus now is on velocity in Big data, where I try start a EU-financed project.

My courses are the following:

TDT4145 Data modeling and database management systems

TDT4225 Very large, distributed data volumes

TDT4150 Advanced database systems

TDT4305 Big data architecture

TDT02 Advanced, distributed systems

Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

Journal publications

Hasibi, Faegheh; Balog, Krisztian; Bratsberg, Svein Erik. (2017) Entity Linking in Queries: Efficiency vs. Effectiveness. Lecture Notes in Computer Science. vol. 10193.
Hasibi, Faegheh; Balog, Krisztian; Bratsberg, Svein Erik. (2016) On the Reproducibility of the TAGME Entity Linking System. Lecture Notes in Computer Science. vol. 9626.
Jonassen, Simon; Bratsberg, Svein Erik. (2013) Improving the performance of pipelined query processing with skipping—and its comparison to document-wise partitioning. World wide web (Bussum).
Bratsberg, Svein Erik; Hetland, Magnus Lie. (2012) Dynamic optimization of queries in pivot-based indexing. Multimedia tools and applications. vol. 60 (2).
Jonassen, Simon; Bratsberg, Svein Erik. (2012) Improving the Performance of Pipelined Query Processing with Skipping. Lecture Notes in Computer Science. vol. 7651.
Jonassen, Simon; Bratsberg, Svein Erik. (2012) Intra-Query Concurrent Pipelined Processing for Distributed Full-Text Retrieval. Lecture Notes in Computer Science. vol. 7224.
Jonassen, Simon; Bratsberg, Svein Erik. (2011) Efficient Compressed Inverted Index Skipping for Disjunctive Text-Queries. Lecture Notes in Computer Science. vol. 6611.
Jonassen, Simon; Bratsberg, Svein Erik. (2010) A Combined Semi-Pipelined Query Processing Architecture for Distributed Full-Text Retrieval. Lecture Notes in Computer Science. vol. 6488.

Part of book/report

Hasibi, Faegheh; Balog, Krisztian; Bratsberg, Svein Erik. (2016) Exploiting Entity Linking in Queries for Entity Retrieval. Proceedings of the 2016 ACM on International Conference on the Theory of Information Retrieval.
Hasibi, Faegheh; Balog, Krisztian; Bratsberg, Svein Erik. (2015) Entity Linking in Queries: Tasks and Evaluation. Proceedings of the 2015 International Conference on The Theory of Information Retrieval.
Hasibi, Faegheh; Balog, Krisztian; Bratsberg, Svein Erik. (2014) A greedy algorithm for finding sets of entity linking interpretations in queries. Proceedings of the first international workshop on Entity recognition & disambiguation.
Jonassen, Simon; Bratsberg, Svein Erik. (2009) Impact of the Query Model and System Settings on Performance of Distributed Inverted Indexes. NIK 2009.
Bratsberg, Svein Erik. (2001) Online Scaling in a Highly Available Database. Proceedings of 27th International Conference on very Large Database, Roma, Italy, September 11-14, 2001.