Bakgrunn og aktiviteter
Professor ved NTNU/IDI siden aug 2001 innen distribuerte systemer med fokus på databaser og søkemotorer. Tidligere ansatt i Clustra som utviklet høytilgjengelige, skalerbare sanntidsdatabaser. I årene 2007-14 jobbet jeg på SFIen iAD - information access disruptions, hvor Microsoft var senterleder. Her jobbet vi med neste generasjonsøkemotorer, hvor fokus hos oss ved NTNU var på skalerbare indekser og strukturerte queries. Forskningsfokus for tiden er håndtering av store mengder data (velocity). Jeg prøver for tiden å få til industrirettede prosjekter innen databaser.
Mine undervisningsfag ved NTNU er de følgende:
TDT4145 Datamodellering og databasesystemer
TDT4225 Store, distribuerte datamengder
TDT4150 Avanserte databasesystemer
TDT4305 Big data-arkitektur
TDT02 Avanserte, distribuerte systemer
Vitenskapelig, faglig og kunstnerisk arbeid
Et utvalg av nyere tidsskriftspublikasjoner, kunstneriske produksjoner, bok, inklusiv bokdeler og rapport-del. Se alle publikasjoner i databasen
Tidsskriftspublikasjoner
- (2017) Entity Linking in Queries: Efficiency vs. Effectiveness. Lecture Notes in Computer Science. vol. 10193 LNCS.
- (2016) On the Reproducibility of the TAGME Entity Linking System. Lecture Notes in Computer Science. vol. 9626.
- (2013) Improving the performance of pipelined query processing with skipping—and its comparison to document-wise partitioning. World wide web (Bussum).
- (2012) Dynamic optimization of queries in pivot-based indexing. Multimedia tools and applications. vol. 60 (2).
- (2012) Improving the Performance of Pipelined Query Processing with Skipping. Lecture Notes in Computer Science. vol. 7651.
- (2012) Intra-Query Concurrent Pipelined Processing for Distributed Full-Text Retrieval. Lecture Notes in Computer Science. vol. 7224.
- (2011) Efficient Compressed Inverted Index Skipping for Disjunctive Text-Queries. Lecture Notes in Computer Science. vol. 6611.
- (2010) A Combined Semi-Pipelined Query Processing Architecture for Distributed Full-Text Retrieval. Lecture Notes in Computer Science. vol. 6488.
Del av bok/rapport
- (2017) Dynamic Factual Summaries for Entity Cards. Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval.
- (2017) DBpedia-Entity v2: A Test Collection for Entity Search. Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval.
- (2016) Exploiting Entity Linking in Queries for Entity Retrieval. Proceedings of the 2016 ACM on International Conference on the Theory of Information Retrieval.
- (2015) Entity Linking in Queries: Tasks and Evaluation. Proceedings of the 2015 International Conference on The Theory of Information Retrieval.
- (2014) A greedy algorithm for finding sets of entity linking interpretations in queries. Proceedings of the first international workshop on Entity recognition & disambiguation.
- (2009) Impact of the Query Model and System Settings on Performance of Distributed Inverted Indexes. NIK 2009.
- (2001) Online Scaling in a Highly Available Database. Proceedings of 27th International Conference on very Large Database, Roma, Italy, September 11-14, 2001.