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Språkvelger

Norsk

Kjetil Nørvåg

Kjetil Nørvåg

Professor
Department of Computer Science

noervaag@ntnu.no
Gamle fysikk, 253, Gløshaugen, Sem Sælands vei 5
Google Scholar Homepage CV
About Publications

About

Kjetil Nørvåg is a professor at the Department of Computer and Information Science at NTNU. He is affiliated with the Data and artificial intelligence group, where his main research interests include distributed and parallel database systems, query processing, information retrieval, and Big Data in general.

He has been involved in teaching on a wide range of topics, including Data mining, Big Data architecture, Advanced databases, Information retrieval, Distributed systems, Data modelling and database systems, Operating systems, Algorithms and data structures, Computer architecture, and Computer systems.

Nørvåg has been involved in a number of projects during recent years, including:

  • Norwegian Center for Research-based AI Innovation (NorwAI), 26M Euro (Centre for Research-based Innovation, funding from NTNU, Norwegian Research Council, and industry partners), 2020-2028.
  • Big Data & Machine Learning, 0.5M Euro per year (funded by DNB), 2018-2023.
  • Trondheim Analytica (NTNU Digital Transformation program), 2018-2022. 
  • ExiBiDa: Exploring new dimensions in Big Data, funding one PhD student and one postdoc, approx. 1M Euro (Norwegian Research Council), 2015-2019.
  • CoupledDB: High-Performance Indexing for Emerging GPU-Coupled Databases, 208K Euro (EU H2020-MSCA), 2017-2019.
  • MUSED: Multi-Source Event Detection, 7M NOK (NTNU funded), 2017-2021. 
  • CloudIX: Cloud-based Indexing and Query Processing, 212K Euro (EU FP7 with partial funding from the Norwegian Research Council), 2011-2013.
  • COMIDOR: Cooperative Mining of Independent Document Repositories, funding two PhD students and two postdocs, approx. 1.1M Euro (Norwegian Research Council), 2008-2013.
  • DASCOSA: Database Support for Computational Science Applications,, funding one PhD student and one postdoc, approx. 400K Euro (Norwegian Research Council), 2007-2012.
  • LongRec: Records Management over Decades (Consortium led by DNV), approx. 2.1M Euro (partially funded by the Norwegian Research Council), 2007-2011.

Nørvåg has published close to 200 publications.  For a complete list, including links to preprints of the papers, please check out his CV

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2021

  • Dam, Thu-Lan; Chester, Sean; Nørvåg, Kjetil; Duong, Quang-Huy. (2021) Efficient top-k recently-frequent term querying over spatio-temporal textual streams. Information Systems. volum 97.
    Academic article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil; Dam, Thu-Lan. (2021) Density Guarantee on Finding Multiple Subgraphs and Subtensors. ACM Transactions on Knowledge Discovery from Data. volum 15 (5).
    Academic article

2020

  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2020) Multiple Dense Subtensor Estimation with High Density Guarantee. 2020 IEEE 36th International Conference on Data Engineering (ICDE).
    Academic chapter/article
  • Maropaki, Stella; Chester, Sean; Doulkeridis, Christos; Nørvåg, Kjetil. (2020) Diversifying Top-k Point-of-Interest Queries via Collective Social Reach. CIKM 20 : The 29th ACM international conference on information and knowledge management : Virtual Event Ireland, October 19-23, 2020..
    Academic chapter/article

2019

  • Djenouri, Youcef; Lin, Chun Wei; Nørvåg, Kjetil; Ramampiaro, Heri. (2019) Highly Efficient Pattern Mining Based on Transaction Decomposition. 35th IEEE International Conference on Data Engineering, ICDE 2019, Macao, China, April 8-11, 2019.
    Academic chapter/article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2019) Sketching Streaming Histogram Elements using Multiple Weighted Factors. CIKM '19: Proceedings of the 28th ACM International Conference on Information and Knowledge Management.
    Academic chapter/article
  • Özdikis, Özer; Ramampiaro, Heri; Nørvåg, Kjetil. (2019) Locality-adapted kernel densities of term co-occurrences for location prediction of tweets. Information Processing & Management. volum 56 (4).
    Academic article
  • Trattner, Christoph; Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2019) Investigating and predicting online food recipe upload behavior. Information Processing & Management. volum 56 (3).
    Academic article

2018

  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2018) Applying temporal dependence to detect changes in streaming data. Applied intelligence (Boston). volum 48 (12).
    Academic article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil; Fournier-Viger, Philippe; Dam, Thu-Lan. (2018) High utility drift detection in quantitative data streams. Knowledge-Based Systems. volum 157.
    Academic article
  • Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2018) On Validation and Predictability of Digital Badges’ Influence on Individual Users. Proceedings of the AAAI Conference on Artificial Intelligence.
    Academic article
  • Özdikis, Özer; Ramampiaro, Heri; Nørvåg, Kjetil. (2018) Locality-adapted Kernel Densities for Tweet Localization. Proceedings of the 41st International ACM SIGIR Conference on Research & Development in Information Retrieval.
    Academic chapter/article

2017

  • Benetka, Jan; Balog, Krisztian; Nørvåg, Kjetil. (2017) Anticipating Information Needs Based on Check-in Activity. Proceedings of the Tenth ACM International Conference on Web Search and Data Mining, WSDM 2017, Cambridge, United Kingdom, February 6-10, 2017.
    Academic chapter/article
  • Gkorgkas, Orestis; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2017) Exploratory product search using top-k join queries. Information Systems. volum 64 (March).
    Academic article

2016

  • Chester, Sean; Gkorgkas, Orestis; Nørvåg, Kjetil. (2016) Top-k Dominating Queries, in Parallel, in Memory. Evaggelia Pitoura, Sofian Maabout, Georgia Koutrika, Amélie Marian, Letizia Tanca, Ioana Manolescu, Kostas Stefanidis: Proceedings of the 19th International Conference on Extending Database Technology, EDBT 2016, Bordeaux, France, March 15-16, 2016, Bordeaux, France, March 15-16, 2016.
    Academic chapter/article
  • Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2016) Online Food Recipe Title Semantics: Combining Nutrient Facts and Topics. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management.
    Academic chapter/article
  • Saouk, Mei; Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil. (2016) Efficient processing of top-k joins in MapReduce. Proceedings 2016 IEEE International Conference on Big Data.
    Academic chapter/article

2015

  • Kusmierczyk, Tomasz; Trattner, Christoph; Nørvåg, Kjetil. (2015) Temporality in Online Food Recipe Consumption and Production. Aldo Gangemi, Stefano Leonardi, Alessandro Panconesi: Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume.
    Other
  • Larrain, Santiago; Trattner, Christoph; Parra, Denis; Graells-Garrido, Eduardo; Nørvåg, Kjetil. (2015) 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 16-20, 2015.
    Other
  • Gkorgkas, Orestis; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2015) Finding the Most Diverse Products using Preference Queries. Advances in Database Technology - EDBT 2015, 18th International Conference on Extending Database Technology, Brussels, Belgium, March 23-27, Proceedings.
    Academic chapter/article
  • Kanhabua, Nattiya; Blanco, Roi; Nørvåg, Kjetil. (2015) Temporal Information Retrieval. Now Publishers Inc.. 2015. ISBN 978-1-68083-032-3.
    Scientific monography

2014

  • Doulkeridis, Christos; Nørvåg, Kjetil. (2014) A survey of large-scale analytical query processing in MapReduce. The VLDB journal. volum 23 (3).
    Scientific translation/review
  • Kotsakos, Dimitrios; Lappas, Theodoros; Kotzias, Dimitrios; Gunopulos, Dimitrios; Kanhabua, Nattiya; Nørvåg, Kjetil. (2014) A burstiness-aware approach for document dating. The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014.
    Academic chapter/article

2013

  • Ciglan, Marek; Laclavik, Michal; Nørvåg, Kjetil. (2013) On community detection in real-world networks and the importance of degree assortativity. The 19th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, KDD 2013, Chicago, IL, USA, August 11-14, 2013.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Kotidis, Yannis. (2013) Branch-and-bound algorithm for reverse top-k queries. Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2013, New York, NY, USA, June 22-27, 2013.
    Academic chapter/article

2012

  • Ciglan, Marek; Nørvåg, Kjetil; Hluchy, Ladislav. (2012) The SemSets model for ad-hoc semantic list search. Proceedings of the 21st World Wide Web Conference 2012, WWW 2012, Lyon, France, April 16-20, 2012.
    Academic chapter/article
  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Polyzotis, Neoklis. (2012) Processing of Rank Joins in Highly Distributed Systems. Proceedings - International Conference on Data Engineering.
    Academic article
  • Rocha-Junior, Joao B.; Nørvåg, Kjetil. (2012) Top-k spatial keyword queries on road networks. 15th International Conference on Extending Database Technology, EDBT '12, Berlin, Germany, March 27-30, 2012, Proceedings.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2012) Distributed top-k query processing by exploiting skyline summaries. Distributed and parallel databases. volum 30 (3-4).
    Academic article

2011

  • Rocha-Junior, Joao B.; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2011) Efficient Execution Plans for Distributed Skyline Query Processing. EDBT/ICDT 2011 Joint Conference.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Kotidis, Yannis; Nørvåg, Kjetil. (2011) Monochromatic and Bichromatic Reverse Top-k Queries. IEEE Transactions on Knowledge and Data Engineering. volum 23 (8).
    Academic article

2010

  • Ciglan, Marek; Nørvåg, Kjetil. (2010) WikiPop: personalized event detection system based on Wikipedia page view statistics. Proceedings of the 19th ACM international conference on Information and knowledge management.
    Academic chapter/article
  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Vazirgiannis, Michalis. (2010) On the selectivity of multidimensional routing indices. Proceedings of the 19th ACM international conference on Information and knowledge management.
    Academic chapter/article
  • Hauglid, Jon Olav; Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2010) DYFRAM: dynamic fragmentation and replica management in distributed database systems. Distributed and parallel databases. volum 28 (2-3).
    Academic article
  • Rocha-Junior, Joao B.; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2010) Efficient Processing of Top-k Spatial Preference Queries. Proceedings of the VLDB Endowment. volum 4 (2).
    Academic article
  • Vlachou, Akrivi; Doulkeridis, Christos; Kotidis, Yannis; Nørvåg, Kjetil. (2010) Reverse Top-k Queries. 26th International Conference on Data Engineering. Conference Proceedings.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Kotidis, Yannis. (2010) Identifying the Most Influential Data Objects with Reverse Top-k Queries. Proceedings of the VLDB Endowment. volum 3 (1).
    Academic article
  • Zhang, Xiangliang; Wang, Wei; Nørvåg, Kjetil; Sebag, Michele. (2010) K-AP: Generating Specified K Clusters by Efficient Affinity Propagation. 10th IEEE International Conference on Data Mining, Proceedings.
    Academic chapter/article

2009

  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Vazirgiannis, Michalis. (2009) Multidimensional Routing Indices for Efficient Distributed Query Processing. Proceedings of 18th ACM Conference on Information and Knowledge Management (CIKM'09).
    Academic chapter/article
  • Hauglid, Jon Olav; Nørvåg, Kjetil; Ryeng, Norvald Hegelstad. (2009) Efficient and Robust Database Support for Data-Intensive Applications in Dynamic Environments. Proceedings of the 25th IEEE International Conference on Data Engineering (ICDE 2009).
    Academic chapter/article

2008

  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2008) Skyline-based Peer-to-Peer Top-k Query Processing. Proceedings of the 2008 IEEE 24th International Conference on Data Engineering.
    Academic chapter/article
  • Hauglid, Jon Olav; Nørvåg, Kjetil. (2008) PROQID: Partial Restarts of Queries in Distributed Databases. Proceedings of ACM 17th Conference on Information and Knowledge Management (CIKM 08).
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeiridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2008) On efficient top-k query processing in highly distributed environments. Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2008, Vancouver, BC, Canada.
    Academic chapter/article

2007

  • Doulkeridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2007) DESENT: decentralized and distributed semantic overlay generation in P2P networks. IEEE Journal on Selected Areas in Communications. volum 25 (1).
    Academic article

Scientific articles

  • Dam, Thu-Lan; Chester, Sean; Nørvåg, Kjetil; Duong, Quang-Huy. (2021) Efficient top-k recently-frequent term querying over spatio-temporal textual streams. Information Systems. volum 97.
    Academic article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil; Dam, Thu-Lan. (2021) Density Guarantee on Finding Multiple Subgraphs and Subtensors. ACM Transactions on Knowledge Discovery from Data. volum 15 (5).
    Academic article
  • Özdikis, Özer; Ramampiaro, Heri; Nørvåg, Kjetil. (2019) Locality-adapted kernel densities of term co-occurrences for location prediction of tweets. Information Processing & Management. volum 56 (4).
    Academic article
  • Trattner, Christoph; Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2019) Investigating and predicting online food recipe upload behavior. Information Processing & Management. volum 56 (3).
    Academic article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2018) Applying temporal dependence to detect changes in streaming data. Applied intelligence (Boston). volum 48 (12).
    Academic article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil; Fournier-Viger, Philippe; Dam, Thu-Lan. (2018) High utility drift detection in quantitative data streams. Knowledge-Based Systems. volum 157.
    Academic article
  • Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2018) On Validation and Predictability of Digital Badges’ Influence on Individual Users. Proceedings of the AAAI Conference on Artificial Intelligence.
    Academic article
  • Gkorgkas, Orestis; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2017) Exploratory product search using top-k join queries. Information Systems. volum 64 (March).
    Academic article
  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Polyzotis, Neoklis. (2012) Processing of Rank Joins in Highly Distributed Systems. Proceedings - International Conference on Data Engineering.
    Academic article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2012) Distributed top-k query processing by exploiting skyline summaries. Distributed and parallel databases. volum 30 (3-4).
    Academic article
  • Vlachou, Akrivi; Doulkeridis, Christos; Kotidis, Yannis; Nørvåg, Kjetil. (2011) Monochromatic and Bichromatic Reverse Top-k Queries. IEEE Transactions on Knowledge and Data Engineering. volum 23 (8).
    Academic article
  • Hauglid, Jon Olav; Ryeng, Norvald Hegelstad; Nørvåg, Kjetil. (2010) DYFRAM: dynamic fragmentation and replica management in distributed database systems. Distributed and parallel databases. volum 28 (2-3).
    Academic article
  • Rocha-Junior, Joao B.; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2010) Efficient Processing of Top-k Spatial Preference Queries. Proceedings of the VLDB Endowment. volum 4 (2).
    Academic article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Kotidis, Yannis. (2010) Identifying the Most Influential Data Objects with Reverse Top-k Queries. Proceedings of the VLDB Endowment. volum 3 (1).
    Academic article
  • Doulkeridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2007) DESENT: decentralized and distributed semantic overlay generation in P2P networks. IEEE Journal on Selected Areas in Communications. volum 25 (1).
    Academic article

Journal publications

  • Doulkeridis, Christos; Nørvåg, Kjetil. (2014) A survey of large-scale analytical query processing in MapReduce. The VLDB journal. volum 23 (3).
    Scientific translation/review

Books

  • Kanhabua, Nattiya; Blanco, Roi; Nørvåg, Kjetil. (2015) Temporal Information Retrieval. Now Publishers Inc.. 2015. ISBN 978-1-68083-032-3.
    Scientific monography

Part of book/report

  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2020) Multiple Dense Subtensor Estimation with High Density Guarantee. 2020 IEEE 36th International Conference on Data Engineering (ICDE).
    Academic chapter/article
  • Maropaki, Stella; Chester, Sean; Doulkeridis, Christos; Nørvåg, Kjetil. (2020) Diversifying Top-k Point-of-Interest Queries via Collective Social Reach. CIKM 20 : The 29th ACM international conference on information and knowledge management : Virtual Event Ireland, October 19-23, 2020..
    Academic chapter/article
  • Djenouri, Youcef; Lin, Chun Wei; Nørvåg, Kjetil; Ramampiaro, Heri. (2019) Highly Efficient Pattern Mining Based on Transaction Decomposition. 35th IEEE International Conference on Data Engineering, ICDE 2019, Macao, China, April 8-11, 2019.
    Academic chapter/article
  • Duong, Quang-Huy; Ramampiaro, Heri; Nørvåg, Kjetil. (2019) Sketching Streaming Histogram Elements using Multiple Weighted Factors. CIKM '19: Proceedings of the 28th ACM International Conference on Information and Knowledge Management.
    Academic chapter/article
  • Özdikis, Özer; Ramampiaro, Heri; Nørvåg, Kjetil. (2018) Locality-adapted Kernel Densities for Tweet Localization. Proceedings of the 41st International ACM SIGIR Conference on Research & Development in Information Retrieval.
    Academic chapter/article
  • Benetka, Jan; Balog, Krisztian; Nørvåg, Kjetil. (2017) Anticipating Information Needs Based on Check-in Activity. Proceedings of the Tenth ACM International Conference on Web Search and Data Mining, WSDM 2017, Cambridge, United Kingdom, February 6-10, 2017.
    Academic chapter/article
  • Chester, Sean; Gkorgkas, Orestis; Nørvåg, Kjetil. (2016) Top-k Dominating Queries, in Parallel, in Memory. Evaggelia Pitoura, Sofian Maabout, Georgia Koutrika, Amélie Marian, Letizia Tanca, Ioana Manolescu, Kostas Stefanidis: Proceedings of the 19th International Conference on Extending Database Technology, EDBT 2016, Bordeaux, France, March 15-16, 2016, Bordeaux, France, March 15-16, 2016.
    Academic chapter/article
  • Kusmierczyk, Tomasz; Nørvåg, Kjetil. (2016) Online Food Recipe Title Semantics: Combining Nutrient Facts and Topics. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management.
    Academic chapter/article
  • Saouk, Mei; Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil. (2016) Efficient processing of top-k joins in MapReduce. Proceedings 2016 IEEE International Conference on Big Data.
    Academic chapter/article
  • Kusmierczyk, Tomasz; Trattner, Christoph; Nørvåg, Kjetil. (2015) Temporality in Online Food Recipe Consumption and Production. Aldo Gangemi, Stefano Leonardi, Alessandro Panconesi: Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume.
    Other
  • Larrain, Santiago; Trattner, Christoph; Parra, Denis; Graells-Garrido, Eduardo; Nørvåg, Kjetil. (2015) 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 16-20, 2015.
    Other
  • Gkorgkas, Orestis; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2015) Finding the Most Diverse Products using Preference Queries. Advances in Database Technology - EDBT 2015, 18th International Conference on Extending Database Technology, Brussels, Belgium, March 23-27, Proceedings.
    Academic chapter/article
  • Kotsakos, Dimitrios; Lappas, Theodoros; Kotzias, Dimitrios; Gunopulos, Dimitrios; Kanhabua, Nattiya; Nørvåg, Kjetil. (2014) A burstiness-aware approach for document dating. The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014.
    Academic chapter/article
  • Ciglan, Marek; Laclavik, Michal; Nørvåg, Kjetil. (2013) On community detection in real-world networks and the importance of degree assortativity. The 19th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, KDD 2013, Chicago, IL, USA, August 11-14, 2013.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Kotidis, Yannis. (2013) Branch-and-bound algorithm for reverse top-k queries. Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2013, New York, NY, USA, June 22-27, 2013.
    Academic chapter/article
  • Ciglan, Marek; Nørvåg, Kjetil; Hluchy, Ladislav. (2012) The SemSets model for ad-hoc semantic list search. Proceedings of the 21st World Wide Web Conference 2012, WWW 2012, Lyon, France, April 16-20, 2012.
    Academic chapter/article
  • Rocha-Junior, Joao B.; Nørvåg, Kjetil. (2012) Top-k spatial keyword queries on road networks. 15th International Conference on Extending Database Technology, EDBT '12, Berlin, Germany, March 27-30, 2012, Proceedings.
    Academic chapter/article
  • Rocha-Junior, Joao B.; Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil. (2011) Efficient Execution Plans for Distributed Skyline Query Processing. EDBT/ICDT 2011 Joint Conference.
    Academic chapter/article
  • Ciglan, Marek; Nørvåg, Kjetil. (2010) WikiPop: personalized event detection system based on Wikipedia page view statistics. Proceedings of the 19th ACM international conference on Information and knowledge management.
    Academic chapter/article
  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Vazirgiannis, Michalis. (2010) On the selectivity of multidimensional routing indices. Proceedings of the 19th ACM international conference on Information and knowledge management.
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Kotidis, Yannis; Nørvåg, Kjetil. (2010) Reverse Top-k Queries. 26th International Conference on Data Engineering. Conference Proceedings.
    Academic chapter/article
  • Zhang, Xiangliang; Wang, Wei; Nørvåg, Kjetil; Sebag, Michele. (2010) K-AP: Generating Specified K Clusters by Efficient Affinity Propagation. 10th IEEE International Conference on Data Mining, Proceedings.
    Academic chapter/article
  • Doulkeridis, Christos; Vlachou, Akrivi; Nørvåg, Kjetil; Kotidis, Yannis; Vazirgiannis, Michalis. (2009) Multidimensional Routing Indices for Efficient Distributed Query Processing. Proceedings of 18th ACM Conference on Information and Knowledge Management (CIKM'09).
    Academic chapter/article
  • Hauglid, Jon Olav; Nørvåg, Kjetil; Ryeng, Norvald Hegelstad. (2009) Efficient and Robust Database Support for Data-Intensive Applications in Dynamic Environments. Proceedings of the 25th IEEE International Conference on Data Engineering (ICDE 2009).
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2008) Skyline-based Peer-to-Peer Top-k Query Processing. Proceedings of the 2008 IEEE 24th International Conference on Data Engineering.
    Academic chapter/article
  • Hauglid, Jon Olav; Nørvåg, Kjetil. (2008) PROQID: Partial Restarts of Queries in Distributed Databases. Proceedings of ACM 17th Conference on Information and Knowledge Management (CIKM 08).
    Academic chapter/article
  • Vlachou, Akrivi; Doulkeiridis, Christos; Nørvåg, Kjetil; Vazirgiannis, Michalis. (2008) On efficient top-k query processing in highly distributed environments. Proceedings of the ACM SIGMOD International Conference on Management of Data, SIGMOD 2008, Vancouver, BC, Canada.
    Academic chapter/article
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