DB group
 

Publications

This section is an overview of different kinds of scientific publications produced by the NTNU Data and Information Management Group. By default all types of publications from all years by all authors are displayed, but you can limit the number of listed publications by specifying publication type, author or year - or a combination of these parameters.

Published in 2014

A Burstiness-aware Approach for Document Dating Dimitrios Kotsakos, Theodoros Lappas, Dimitrios Kotzias, Dimitrios  Gunopulos, Nattiya Kanhabua and Kjetil Nørvåg Proceedings of SIGIR'2014, Gold Coast, Australia July 2014
Efficient Processing of Exploratory Top-k Joins Orestis Gkorgkas, Akrivi Vlachou, Christos Doulkeridis and Kjetil Nørvåg Proceedings of SSDBM'2014, Aalborg, Denmark July 2014
ExperTime: Tracking Expertise over Time Jan Rybak, Krisztian Balog and Kjetil Nørvåg Proceedings of SIGIR'2014, Gold Coast, Australia July 2014
A Survey of Large-Scale Analytical Query Processing in MapReduce Christos Doulkeridis and Kjetil Nørvåg The VLDB Journal, Vol. 23, No. 3 June 2014 (The final version is available at link.springer.com)
APSkyline: Improved Skyline Computation for Multicore Architectures Stian Liknes, Akrivi Vlachou, Christos Doulkeridis and Kjetil Nørvåg Proceedings of DASFAA'2014, Bali, Indonesia April 2014
Temporal Expertise Profiling Jan Rybak, Krisztian Balog and Kjetil Nørvåg Proceedings of ECIR'2014, Amsterdam, The Netherlands April 2014

Published in 2013

A Framework for Modeling, Computing and Presenting Time-aware Recommendations Kostas Stefanidis, Irene Ntoutsi, Mihalis Petropoulos, Kjetil Nørvåg and Hans-Peter Kriegel Transactions on Large-Scale Data- and Knowledge-Centered Systems, Vol. 10 December 2013
Event-Related Image Retrieval: Exploring Geographical and Temporal Distribution of User Tags Massimiliano Ruocco and Heri Ramampiaro International Journal of Multimedia Information Retrieval (JMIR). Volume 2, Issue 4, pp 273-288 November 2013
A Framework for Grouping and Summarizing Keyword Search Results Orestis Gkorgkas, Kostas Stefanidis and Kjetil Nørvåg Proceedings of ADBIS'2013, Genova, Italy September 2013
Cumulative Citation Recommendation: Classification vs. Ranking Krisztian Balog and Heri Ramampiaro Proceedings of the 36th international ACM SIGIR conference on Research and development in Information Retrieval (SIGIR 2013) July 2013
Branch-and-Bound Algorithm for Reverse Top-k Queries Akrivi Vlachou, Christos Doulkeridis, Kjetil Nørvåg and Yannis Kotidis Proceedings of SIGMOD'2013, New York, USA June 2013
Exploring Temporal Proximity and Spatial Distribution of Terms in Web-based Search of Event-Related Images Massimiliano Ruocco and Heri Ramampiaro Proceedings of 24th ACM Conference on Hypertext and Social Media (HT'2013), Paris, France May 2013
Multi-step Classification Approaches to Cumulative Citation Recommendation Krisztian Balog, Naimdjon Takhirov, Heri Ramampiaro and Kjetil Nørvåg Proceedings of Open research Areas in Information Retrieval Conference (OAIR 2013) May 2013
Temporal Classifiers for Predicting the Expansion of Medical Subject Headings George Tsatsaronis, Iraklis Varlamis, Nattiya Kanhabua and Kjetil Nørvåg Proceedings of CICLing'2013, Samos, Greece March 2013

Published in 2012

Exploratory Analysis on Heterogeneous Tag-Point Patterns for Ranking and Extracting Hot-Spot Related Tags Massimiliano Ruocco and Heri Ramampiaro Proceedings of the 5th ACM SIGSPATIAL International Workshop on Location-Based Social Networks (LBSN) 2012 November 2012
SemaFor: Semantic Document Indexing using Semantic Forests George Tsatsaronis, Iraklis Varlamis and Kjetil Nørvåg Proceedings of CIKM'2012, Maui, Hawaii November 2012
Contextual Recommendations for Groups Kostas Stefanidis, Nafiseh Shabib, Kjetil Nørvåg and John Krogstie Proceedings of NoCoDA 2012 (co-located with ER'2012), Firenze, Italy October 2012
Fast Group Recommendations by Applying User Clustering Irene Ntoutsi, Kostas Stefanidis, Kjetil Nørvåg and Hans-Peter Kriegel Proceedings of ER'2012, Firenze, Italy October 2012
On the Use of Semantic Knowledge Bases for Temporally-aware Entity Retrieval Krisztian Balog and Kjetil Nørvåg Proceedings of ESAIR'2012 (co-located with CIKM'2012), Maui, Hawaii, USA October 2012
A Framework for Time-aware Recommendations Kostas Stefanidis, Irene Ntoutsi, Kjetil Nørvåg and Hans-Peter Kriegel Proceedings of DEXA'2012, Vienna, Austria September 2012
Ranking Distributed Knowledge Repositories Robert Neumayer, Krisztian Balog and Kjetil Nørvåg Proceedings of TPDL'2012, Paphos, Cyprus September 2012
Learning to Select a Time-aware Ranking Model (poster) Nattiya Kanhabua, Klaus Berberich and Kjetil Nørvåg Proceedings of SIGIR'2012, Portland, Oregon, USA August 2012
On Saying "Enough Already!" in MapReduce Christos Doulkeridis and Kjetil Nørvåg Proceedings of 1st International Workshop on Cloud Intelligence (Cloud-I 2012, co-located with VLDB'2012), Istanbul, Turkey August 2012
Discovering Representative Skyline Points over Distributed Data Akrivi Vlachou, Christos Doulkeridis and Maria Halkidi Proceedings of SSDBM'2012, Chania, Greece June 2012
gRecs: A Group Recommendation System based on User Clustering (demo paper) Irene Ntoutsi, Kostas Stefanidis, Kjetil Nørvåg and Hans-Peter Kriegel Proceedings of DASFAA'2012, Busan, South Korea April 2012
Processing of Rank Joins in Highly Distributed Systems Christos Doulkeridis, Akrivi Vlachou, Kjetil Nørvåg, Yannis Kotidis and Neoklis Polyzotis Proceedings of ICDE'2012, Washington, DC, USA April 2012
The SemSets Model for Ad-hoc Semantic List Search Marek Ciglan, Kjetil Nørvåg and Ladislav Hluchý Proceedings of WWW'2012, Lyon, France April 2012

Published in 2011

Blog feed search with a post index Wouter Weerkamp, Krisztian Balog and Maarten de Rijke Information Retrieval, Vol. 14, No. 5 October 2011
Efficient Community Detection Using Power Graph Analysis George Tsatsaronis, Matthias Reimann, Iraklis Varlamis, Orestis Gkorgkas and Kjetil Nørvåg Proceedings of the 9th International Workshop on Large-Scale and Distributed Systems for Information Retrieval (LSDS-IR'11, in conjunction with CIKM'2011), Glasgow, Scotland, UK October 2011
How to Become a Group Leader? or Modelling Author Types based on Graph Mining George Tsatsaronis, Iraklis Varlamis, Sunna Torge, Matthias Reimann, Kjetil Nørvåg and et. al. Proceedings of TPDL'2011, Berlin, Germany September 2011
Monochromatic and Bichromatic Reverse Top-k Queries Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis and Kjetil Nørvåg IEEE Transactions on Knowledge and Data Engineering, Vol. 23, No. 8 August 2011
A Comparison of Temporal Ranking Methods (poster) Nattiya Kanhabua and Kjetil Nørvåg Proceedings of SIGIR'2011, Beijing, China July 2011
People searching for people: analysis of a people search engine log Wouter Weerkamp, Richard Berendsen, Bogomil Kovachev, Edgar Meij, Krisztian Balog and Maarten de Rijke Proceedings of SIGIR'2011, Beijing, China July 2011
Ranking Related News Predictions Nattiya Kanhabua, Roi Blanco and Michael Matthews Proceedings of SIGIR'2011, Beijing, China July 2011
Time-based Query Performance Predictors (poster) Nattiya Kanhabua and Kjetil Nørvåg Proceedings of SIGIR'2011, Beijing, China July 2011
Combination of Feature Selection Methods for Text Categorisation Robert Neumayer, Rudolf Mayer and Kjetil Nørvåg Proceedings of ECIR'2011, Dublin, Ireland April 2011
Efficient Compressed Inverted Index Skipping for Disjunctive Text-Queries Simon Jonassen and Svein Erik Bratsberg Proceedings of ECIR'2011, Dublin, Ireland April 2011
Site-Autonomous Distributed Semantic Caching Norvald H. Ryeng, Jon Olav Hauglid and Kjetil Nørvåg Proceedings of ACM SAC'2011, Taichung, Taiwan March 2011
Supporting BioMedical Information Retrieval: The BioTracer Approach Heri Ramampiaro and Chen Li Transactions on Large-Scale Data- and Knowledge-Centered Systems (TLDKS), 2011, No.4. Vol. 6990, Springer. pp. 7394 2011

Published in 2010

Fast detection of size-constrained communities in large networks Marek Ciglan and Kjetil Nørvåg Proceedings of WISE'2010, Hong Kong, China December 2010
K-AP: Generating Specified K Clusters by Efficient Affinity Propagation Xiangliang Zhang, Wei Wang, Kjetil Nørvåg and Michele Sebag Proceedings of IEEE International Conference on Data Mining (ICDM 2010) December 2010
Cloud Computing in the 1970s: The Discovery of Hash Based Relational Algebra Kjell Bratbergsengen History of Nordic Computing 3. IFIP Advances in Information and Communication Technology Volume 350 October 2010
On the Selectivity of Multidimensional Routing Indices Christos Doulkeridis, Akrivi Vlachou, Kjetil Nørvåg, Yannis Kotidis and Michalis Vazirgiannis Proceedings of CIKM'2010, Toronto, Canada October 2010
Determining Time of Queries for Re-ranking Search Results Nattiya Kanhabua and Kjetil Nørvåg Proceedings of ECDL'2010, Glasgow, Scotland, UK September 2010
QUEST: Query Expansion using Synonyms over Time (demo paper) Nattiya Kanhabua and Kjetil Nørvåg Proceedings of ECML PKDD'2010, Barcelona, Spain September 2010
Ranking the Sky: Discovering the Importance of Skyline Points through Subspace Dominance Relationships Akrivi Vlachou and Michalis Vazirgiannis Data and Knowledge Engineering Journal, Vol. 69, No. 9, pages 943-964, Elsevier Science September 2010
SemanticRank: Ranking Keywords and Sentences Using Semantic Graphs George Tsatsaronis, Iraklis Varlamis and Kjetil Nørvåg Proceedings of COLING'2010, Beijing, China August 2010
Efficient Algorithms for Reverse Top-k Queries Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis and Kjetil Nørvåg Proceedings of HDMS'2010, Agia Napa, Cyprus July 2010
Exploiting Time-based Synonyms in Searching Document Archives Nattiya Kanhabua and Kjetil Nørvåg Proceedings of JCDL'2010, Brisbane, Australia June 2010
Information Models Leveraging Identification of Returnable Transport Items Gunnar Senneset, Roger Midtstraum, Eskil Forås, Geir Vevle and Ingvill Heskestad British Food Journal, Vol. 112 Iss: 6 June 2010
Extracting Named Entities and Synonyms from Wikipedia Christian Bøhn and Kjetil Nørvåg Proceedings of the 24th IEEE International Conference on Advanced Information Networking and Applications (AINA'2010) April 2010
Learning to find interesting connections in Wikipedia Marek Ciglan, Etienne Rivière and Kjetil Nørvåg Proceedings of the 12th International Asia-Pacific Web Conference (APWeb'2010), Busan, Korea April 2010
Peer-to-Peer Similarity Search based on M-Tree Indexing Akrivi Vlachou, Christos Doulkeridis and Yannis Kotidis Proceedings of DASFAA'2010, Tsukuba, Japan April 2010
SGDB - Simple graph database optimized for activation spreading computation Marek Ciglan and Kjetil Nørvåg Proceedings of GDM'2010 (in conjunction with DASFAA'2010) April 2010
An Experimental Study on Unsupervised Graph-based Word Sense Disambiguation George Tsatsaronis, Iraklis Varlamis and Kjetil Nørvåg Proceedings of CICLing'2010, Iaşi, Romania March 2010
Efficient Search based on Content Similarity over Self-Organizing P2P Networks Christos Doulkeridis, Akrivi Vlachou, Kjetil Nørvåg, Yannis Kotidis and Michalis Vazirgiannis Journal on Peer-to-Peer Networking and Applications, Vol. 3, Number 1 March 2010
Reverse Top-k Queries Akrivi Vlachou, Christos Doulkeridis, Yannis Kotidis and Kjetil Nørvåg Proceedings of ICDE'2010, Los Angeles, USA March 2010
Distributed semantic overlay networks Christos Doulkeridis, Akrivi Vlachou, Kjetil Nørvåg and Michalis Vazirgiannis Handbook of Peer-to-Peer Networking, Springer January 2010
Text Relatedness based on a Word Thesaurus George Tsatsaronis, Iraklis Varlamis and Michalis Vazirgiannis Journal of Artifical Intelligence Research (JAIR), Vol. 37 January 2010

Published in 2009

Efficient Range Query Processing in Metric Spaces over Highly Distributed Data Christos Doulkeridis, Akrivi Vlachou, Yannis Kotidis and Michalis Vazirgiannis Distributed and Parallel Databases, Vol. 26, Numbers 2-3 December 2009
Multidimensional Routing Indices for Efficient Distributed Query Processing Christos Doulkeridis, Akrivi Vlachou, Kjetil Nørvåg, Yannis Kotidis and Michalis Vazirgiannis Proceedings of CIKM'2009, Hong Kong, China November 2009
Semantic Relatedness Hits Bibliographic Data George Tsatsaronis, Iraklis Varlamis, Sofia Stamou, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of 11th ACM International Workshop on Web Information and Data Management (WIDM), Hong Kong, China November 2009
Omiotis: A Thesaurus-based Measure of Text Relatedness (demo paper) George Tsatsaronis, Iraklis Varlamis, Michalis Vazirgiannis and Kjetil Nørvåg Proceedings of ECML PKDD'2009, Bled, Slovenia September 2009
Using Temporal Language Models for Document Dating (demo paper) Nattiya Kanhabua and Kjetil Nørvåg Proceedings of ECML PKDD'2009, Bled, Slovenia September 2009
Rappel: Exploiting interest and network locality to improve fairness in publish-subscribe systems Jay A. Patel, Etienne Rivière, Indranil Gupta and Anne-Marie Kermarrec Computer Networks August 2009
Exploiting temporal information in retrieval of archived documents Nattiya Kanhabua Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2009), Boston, USA July 2009
Bandwidth-constrained Distributed Skyline Computation Akrivi Vlachou and Kjetil Nørvåg Proceedings of the 8th International ACM Workshop on Data Engineering for Wireless and Mobile Access (ACM MobiDE'2009, in conjunction with SIGMOD'2009), Providence, USA June 2009
Semantic-Based Temporal Text-Rule Mining Kjetil Nørvåg and Ole Kristian Fivelstad Proceedings of the 10th International Conference on Intelligent Text Processing and Computational Linguistics (CICLing 2009), Mexico City, Mexico March 2009

Published in 2008

Combination of Audio and Lyrics Features for Genre Classification in Digital Audio Collections Rudolf Mayer, Robert Neumayer and Andreas Rauber Proceedings of the ACM 16th International Conference on Multimedia (MM'08) October 2008
Peer-to-Peer Similarity Search over Widely Distributed Document Collections Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of 6th Workshop on Large-Scale Distributed Systems for Information Retrieval (LSDS-IR'08, in conjunction with CIKM'2008), Napa Valley, USA October 2008
Efficient Execution of Small (Single-Tuple) Transactions in Main-Memory Databases Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of ADBIS'2008, Pori, Finland September 2008
Improving Temporal Language Models For Determining Time of Non-Timestamped Documents Nattiya Kanhabua and Kjetil Nørvåg Proceedings of the 12th European Conference on Research and Advanced Technology for Digital Libraries 2008 (ECDL'2008) September 2008
Robust Aggregation in Peer-to-Peer Database Systems Norvald H. Ryeng and Kjetil Nørvåg Proceedings of IDEAS'2008, Coimbra, Portugal September 2008
Query Planning in the PORDaS P2P Database System Kjetil Nørvåg, Eirik Eide and Odin Standal JDIM, Vol 6, No. 4 pages 307-314, August 2008
On Efficient Top-k Query Processing in Highly Distributed Environments Akrivi Vlachou, Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of SIGMOD'2008, Vancouver, Canada June 2008
Savanta - Search, Analysis, Visualisation and Navigation of Temporal Annotations Jon Olav Hauglid and Jon Heggland To appear in Multimedia Tools and Applications June 2008
Schema-Assisted Peer Selection for XML Querying in Unstructured P2P Systems Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of the Seventh International ACM Workshop on Data Engineering for Wireless and Mobile Access (MobiDE'2008, in conjunction with SIGMOD'2008), Vancouver, Canada June 2008
Main Memory Commit Protocols for Multiple Backups Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of ICN'2008 April 2008
Skyline-based Peer-to-Peer Top-k Query Processing Akrivi Vlachou, Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of 24th IEEE International Conference on Data Engineering (ICDE'08), Cancun, Mexico April 2008
Efficient High Availability Commit Processing Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of ARES'2008 March 2008
Main Memory Commit Processing: The Impact of Priorities Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of DASFAA'2008 March 2008

Published in 2007

Query Planning in P2P Database Systems Kjetil Nørvåg, Eirik Eide and Odin Standal IEEE International Conference on Digital Information Management (ICDIM 2007), Lyon, France October 2007
Accuracy of Aggregation in Peer-to-Peer DBMSs Norvald H. Ryeng and Kjetil Nørvåg 5th International Workshop on Databases, Information Systems and Peer-to-Peer Computing (DBISP2P 2007, in conjunction with VLDB'2007) September 2007
Foreign Superkeys and Constant References Jon Heggland Proceedings of the Eleventh International Database Engineering & Applications Symposium (IDEAS'2007), Banff, Canada September 2007
Preventing Orphan Requests by Integrating Replication and Transactions Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of ADBIS'2007, Varna Bulgaria September 2007
The Circular Two-Phase Commit Protocol Heine Kolltveit and Svein-Olaf Hvasshovd Proceedings of DASFAA'2007, Bangkok, Thailand April 2007
Context-based Caching and Routing for P2P Web Service Discovery Christos Doulkeridis, Vassilis Zafeiris, Kjetil Nørvåg, Michalis Vazirgiannis and Emmanouel Giakoumakis Distributed and Parallel Databases, Vol 21, No. 1 pages 59-84, Springer Science February 2007
DESENT: Decentralized and distributed semantic overlay generation in P2P networks Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis IEEE Journal on Selected Areas in Communications, Vol. 25, No. 1, pages 25-34, IEEE January 2007

Published in 2006

Building secure software-based DRM systems Gisle Grimen, Christian Mönch and Roger Midtstraum Proceedings of Norsk informatikkonferanse 2006 November 2006
Protecting Online Games against Cheating Christian Mönch, Gisle Grimen and Roger Midtstraum Proceedings of the 5th Workshop on Network and System Support for Games (NETGAMES 2006) October 2006
DASCOSA: Database Support for Computational Science Applications Kjetil Nørvåg Proceedings of the 3rd International Workshop on Grid and Peer-to-Peer Computing Impacts on Large Scale Heterogeneous Distributed Database Systems (GLOBE'06), Krakow, Poland September 2006
Mining Association Rules in Temporal Document Collections Kjetil Nørvåg, Trond Øivind Eriksen and Kjell-Inge Skogstad Proceedings the 16th International Symposium on Methodologies for Intelligent Systems (ISMIS'2006), Bari, Italy September 2006
Non-Blocking Materialized View Creation and Transformation of Schemas Jørgen Løland and Svein-Olaf Hvasshovd Proceedings of ADBIS'2006, Thessaloniki, Greece September 2006
Scalable Semantic Overlay Generation for P2P-Based Digital Libraries Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of the 10th European Conference on Digital Libraries (ECDL'2006), Alicante, Spain September 2006
Schema Caching for Improved XML Query Processing in P2P Systems Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of the 6th IEEE International Conference on Peer to Peer Computing, Cambridge, UK September 2006
The SOWES Approach to P2P Web Search using Semantic Overlays Kjetil Nørvåg, Christos Doulkeridis and Michalis Vazirgiannis Proceedings of the 5th Hellenic Data Management Symposium (HDMS'06), Thessaloniki, Greece September 2006
Taxonomy Caching: A Scalable Low-Cost Mechanism for Indexing Remote Contents in Peer-to-Peer Systems Kjetil Nørvåg, Christos Doulkeridis and Michalis Vazirgiannis Proceedings of IEEE International Conference on Pervasive Services 2006 (ICPS06) June 2006
Creating synthetic temporal document collections for Web Archive Benchmarking Kjetil Nørvåg and Albert Overskeid Nybø Proceedings of AWIC'2006 (Springer/Studies in Computational Intelligence), Beer-Sheva, Israel June 2006
DyST: Dynamic and Scalable Temporal Text Indexing Kjetil Nørvåg and Albert Overskeid Nybø Proceedings of the 13th International Symposium on Temporal Representation and Reasoning (TIME'2006), Budapest, Hungary June 2006
Peer-to-Peer Clustering for Semantic Overlay Network Generation Michalis Vazirgiannis, Kjetil Nørvåg and Christos Doulkeridis Proceedings of the Sixth International Workshop on Pattern Recognition in Information Systems (PRIS-2006, co-located with ICEIS 2006), Paphos, Cyprus May 2006
Tamper Protection of Online Clients through Random Checksum Algorithms Gisle Grimen, Christian Mönch and Roger Midtstraum Proceedings of Information Systems Technology and its Applications 5th International Conference (ISTA 2006) May 2006
The SOWES Approach to P2P Web Search using Semantic Overlays Christos Doulkeridis, Kjetil Nørvåg and Michalis Vazirgiannis Proceedings of the 15th World Wide Web Conference World Wide Web (WWW2006), Edinburgh, Scotland, UK May 2006
Granularity Reduction in Temporal Document Databases Kjetil Nørvåg Information Systems, Vol 31, No. 2, pages 134-147, Elsevier Science April 2006
Online, Non-Blocking Relational Schema Changes Jørgen Løland and Svein-Olaf Hvasshovd Proceedings of the 10th International Conference on Extending Database Technology (EDBT'2006) March 2006

Published in 2005

Long-Term Temporal Data Representation of Personal Health Data Tore Mallaug and Kjell Bratbergsengen Proceedings of ADBIS'2005, Tallin, Estonia September 2005
Improving space-efficiency in temporal text-indexing Kjetil Nørvåg and Albert Overskeid Nybø Proceedings of the 10th International Conference on Database Systems for Advanced Applications(DASFAA 2005), Beijing, China April 2005
News Item Extraction for Text Mining in Web Newspapers Kjetil Nørvåg and Randi Øyri Proceedings of International Workshop on Challenges in Web Information Retrieval and Integration (in conjunction with ICDE'2005), Tokyo, Japan April 2005
Supporting Load Balancing and Efficient Reorganization During System Scaling Feng Zhu, Xiaowei Sun, Betty Salzberg and Svein-Olaf Hvasshovd Proceedings of the 19th International Parallel and Distributed Processing Symposium (IPDPS 2005) April 2005
A Mobile Affiliation Model for Supporting Mobile Collaborative Work Hien Nam Le and Mads Nygård Proceedings of Workshop on Ubiquitous Mobile Information and Collaboration Systems (UMICS) 2005
Mobile Transaction System for Supporting Mobile Work Hien Nam Le and Mads Nygård Proceedings of Seventh International Workshop on Mobility in Databases and Distributed Systems (MDDS 2005) 2005
Using the MOWAHS Characterisation Framework for Development of Mobile Work Applications Alf Inge Wang, Carl-Fredrik Sørensen, Heri Ramampiaro, Hien Nam Le, Reidar Conradi and Mads Nygård Proceedings of International Conference on Product Focused Software Process Improvement (PROFES) 2005

Published in 2004

The Design, Implementation, and Performance of the V2 Temporal Document Database System Kjetil Nørvåg Journal of Information and Software Technology, Vol. 46, No. 9, pages 557-574 July 2004
Supporting Temporal Text-Containment Queries in Temporal Document Databases Kjetil Nørvåg Data and Knowledge Engineering Journal, Vol. 49, No. 1, pages 105-125, Elsevier Science April 2004
The Vagabond Approach to Logging and Recovery in Transaction-Time Temporal Object Database Systems Kjetil Nørvåg IEEE Transactions on Knowledge and Data Engineering, Vol. 16, No. 4, pages 504-518, IEEE April 2004
XML Database Application Development through a Stepwise Refinement Prototyping Process Albrecht Schmidt and Kjetil Nørvåg Proceedings of ICEIS 2004 April 2004
CAGISTrans: Providing Adaptable Transactional Support for Cooperative Work - An Extended Treatment Heri Ramampiaro and Mads Nygård Information Technology & Management (ITM) Journal, Vol. 5, No 1-2, pages 23-64, Kluwer Academic Publishers January 2004
A Discrete Model for Topological Relationships between Uncertain Spatial Objects Erlend Tøssebro and Mads Nygård SDH04: 11th Internat. Symposium on Spatial Data Handling, Leicester England 2004
A Fuzzy Adaptive Algorithm for Fine Grained Disk Cache Paging Susmit Bagchi and Mads Nygård SCOPES2004: 8th Internat. Workshop on Software and Compilers for Embedded Systems, Amsterdam The Netherlands 2004
A Locking Model for Mobile Databases in Mobile Environments Hien Nam Le, Heri Ramampiaro and Mads Nygård DA2004: Internat. Conference on Databases and Applications, ACTA press, ISBN 3-540-26200-8, pp 49-55, Innsbruck Austria 2004
Computing Probabilities of Fuzzy Set Values in Vector Models for Uncertain Data Erlend Tøssebro and Mads Nygård GIScience´2004: 3rd Internat. Conference on Geographical Information Science, Adelphi - USA 2004
Designing the Fuzzy Adaptive Cache Swapper for an MDVM System Susmit Bagchi and Mads Nygård ICCC04: Internat. Conference on Computational Cybernetics, Vienna Austria 2004
Designing the MDVM-Stub and Memory Estimator Susmit Bagchi and Mads Nygård IWDC2004: 6th Internat. Workshop on Distributed Computing, Kolkata India 2004
On the Concept of Mobile Distributed Virtual Memory Systems Susmit Bagchi and Mads Nygård DSN2004: Internat. Conference on Dependable Systems and Networks, Florence Italy 2004

Published in 2003

Space-Efficient Support for Temporal Text Indexing in a Document Archive Context Kjetil Nørvåg Proceedings of the 7th European Conference on Digital Libraries (ECDL'2003), Trondheim, Norway November 2003
MobiShare: Sharing Context-Dependent Data & Services from Mobile Sources Efstratios Valavanis, Christopher Ververidis, Michalis Vazirgiannis, George C. Polyzos and Kjetil Nørvåg Proceedings of the 2003 IEEE/WIC International Conference on Web Intelligence (WI 2003), Halifax, Canada October 2003
A Medium Complexity Discrete Model for Uncertain Spatial Data Erlend Tøssebro and Mads Nygård Proceedings of the 7th International Database Engineering and Applications Symposium (IDEAS'2003), Hong Kong, China July 2003
TeXOR: Temporal XML Database on an Object-Relational Database System Kjetil Nørvåg, Marit Limstrand and Lene Myklebust Proceedings of Perspectives of System Informatics (PSI'03), Novosibirsk, Russia July 2003 Revised version later published in post-conference proceedings by Springer Verlag (Lecture Notes in Computer Science; Vol 2890, pages 520-530)
V2: A Database Approach to Temporal Document Management Kjetil Nørvåg Proceedings of the 7th International Database Engineering and Applications Symposium (IDEAS'2003), Hong Kong, China July 2003 Extended version available as technical report IDI-10/2002.
Application Controlled IPC Synchrony - An Event Driven Multithreaded Approach Susmit Bagchi and Mads Nygård Proceedings of the International Conference of Computational Science 2003 (ICCS'2003), Melbourne, Australia. Springer Verlag (Lecture Notes in Computer Science; Vol 2658) June 2003
Service context and information content in mobile information services Josip Zoric, Gisle Grimen and Roger Midtstraum Proceedings of the 12th IST Summit on Mobile and Wireless Communications, Aveiro, Portugal June 2003
The V2 Temporal Document Database System Kjetil Nørvåg Poster Proceedings of the Twelfth International World Wide Web Conference (WWW2003), Budapest, Hungary May 2003
A Discrete Model for Spatial Data with Temporal Uncertainty Erlend Tøssebro and Mads Nygård IKS03: 2nd Internat. Conference on Information and Knowledge Sharing, Scottsdale USA 2003
Requirement Indicators for Mobile Work - The MOWAHS Approach Heri Ramampiaro, Mads Nygård and et. al. AI2003: Internat. Conference on Applied Informatics, Innsbruck Austria 2003
Requirement Indicators for Mobile Work: The MOWAHS Approach Heri Ramampiaro and Alf Inge Wang Proceedings of the IASTED International Conference on Applied Informatics 2003 (AI2003), Innsbruck 2003

Published in 2002

A Study of Object Declustering Strategies in Parallel Temporal Object Database Systems Kjetil Nørvåg Information Sciences, Vol. 146, No. 1-4, pages 1-27, Elsevier Science October 2002
Temporal XML Data Warehouses: Challenges and Solutions Kjetil Nørvåg Proceedings of Workshop on Knowledge Foraging for Dynamic Networking of Communities and Economies October 2002
Uncertainty in Spatiotemporal Databases Erlend Tøssebro and Mads Nygård Proceedings of the 2nd Biennial Int. Conference on Advances in Information Systems (ADVIS), Izmir, Turkey October 2002
OntoLog: Temporal Annotation Using Ad Hoc Ontologies and Application Profiles Jon Heggland Proceedings of 6th European Conference on Research and Advanced Technologies for Digital Libraries (ECDL 2002), Rome, Italy September 2002
An Advanced Discrete Model for Uncertain Spatial Data Erlend Tøssebro and Mads Nygård Proceedings of the Third International Conference on Web-Age Information Management (WAIM'02), Beijing, China August 2002
Abstract and Discrete Models for Uncertain Spatiotemporal Data Erlend Tøssebro and Mads Nygård SSDBM02: 14th Internat. Conference on Scientific and Statistical Database Management, Edinburgh - Scotland July 2002
Signature Caching in Parallel Object Database Systems Kjetil Nørvåg Journal of Information and Software Technology, Vol. 44, No. 6, pages 331-341, Elsevier Science April 2002
Algorithms for Temporal Query Operators in XML Databases Kjetil Nørvåg Proceedings of XML-Based Data Management Workshop (XMLDM) (in conjunction with EDBT'2002), Prague, Czech Republic March 2002 Revised version later published in post-conference proceedings by Springer Verlag (Lecture Notes in Computer Science; Vol 2490, pages 169-183)
SESAM - Searching Supported by Analysis of Metadata Jon Olav Hauglid and Roger Midtstraum Proceedings of the 2002 ACM Symposium on Applied Computing (SAC'2002), Madrid, Spain March 2002
Temporal Query Operators in XML Databases Kjetil Nørvåg Proceedings of the 2002 ACM Symposium on Applied Computing (SAC'2002), Madrid, Spain March 2002
The MOWAHS Characterisation Framework for Mobile Work Carl-Fredrik Sørensen, Alf Inge Wang, Hien Nam Le, Heri Ramampiaro, Mads Nygård and Reidar Conradi Proceedings of the IASTED International Symposia on Applied Informatics (AI2002), Innsbruck, IASTED/ACTA Press February 2002
Customisable Transactional Support for Cooperative Work: An Experience Paper Heri Ramampiaro and Mads Nygård Proceedings of Collaborative Technologies Symposium 2002 (CTS´02), San Antonio, TX. USA January 2002
CAGIS Trans: Providing Adaptable Transactional Support for Cooperative Work - Extended Version Heri Ramampiaro and Mads Nygård ITM: Information Technology and Management Journal, Kluwer Academic, Norwell - USA 2002

Published in 2001

CAGISTrans: Providing Adaptable Transactional Support for Cooperative Work Heri Ramampiaro and Mads Nygård Proceedings of the 6th INFORMS Conference on Information Systems and Technology (CIST-2001), pp. 3-28, Florida, USA November 2001
Reducing the Cost of Perfect Match Accesses in Object Database Systems Kjetil Nørvåg Proceedings of Norsk Informatikkonferanse, Tromsø, Norway November 2001
Searching in image databases using the SESAM approach Jon Olav Hauglid and Roger Midtstraum Proceedings of Norsk Informatikkonferanse, Tromsø, Norway November 2001
Transcoding Versus Multiple Image Versions in Image Servers with QoS Kjartan Rydland, Roger Midtstraum and Josip Zoric Proceedings of Norsk Informatikkonferanse, Tromsø, Norway November 2001
Issues in Transaction-Time Temporal Object Database Systems Kjetil Nørvåg Journal of Database Management, Vol. 12, No. 4, pages 40-51, Oct-Dec October 2001
Online scaling in a highly available database Rune Humborstad and Svein Erik Bratsberg Proceedings of the 27th International Conference on Very Large Databases (VLDB'2001), Rome, Italy September 2001
CAGISTrans: A Transactional Framework for Cooperative Work Heri Ramampiaro and Mads Nygård Proceedings of the 14th International Conference on Parallel and Distributed Computing Systems (PDCS 2001), Dallas, USA August 2001
Fine-Granularity Signature Caching in Object Database Systems Kjetil Nørvåg Data and Knowledge Engineering Journal, Vol. 38, No. 2, pages 101-119, Elsevier Science August 2001
Creating Representations for Continuously Moving Regions from Observations Erlend Tøssebro and Ralf Hartmut Güting Proceedings od the Seventh International Symposium on Spatial and Temporal Databases July 2001
Object and Log Management in Temporal Log-Only Object Database Systems Kjetil Nørvåg Advances in Databases and Information Systems (Proceedings of ADBIS'2001), pages 210-224, Vilnius, Lithuania. Springer Verlag (Lecture Notes in Computer Science; Vol 2151) 2001

Published in 2000

A Comparative Study of Log-Only and In-Place Update Based Temporal Object Database Systems Kjetil Nørvåg Proceedings of the Ninth ACM Conference on Information and Knowledge Management (ACM CIKM'2000), Washington D.C., USA November 2000
Optimal Object Descriptor Caching in Temporal Object Database Systems Kjetil Nørvåg and Kjell Bratbergsengen In K. Tanaka, S. Ghandeharizadeh, and Y. Kambayashi (Eds.), Information Organization and Databases, pages 235-248, Kluwer Academic Publishers November 2000
Supporting Distributed Cooperative Work in CAGIS Heri Ramampiaro, Alf Inge Wang and Terje Brasethvik Proceedings of the 4th Annual IASTED International Conference on Software Engineering and Applications (SEA 2000), Las Vegas, Nevada November 2000
An Ultra Highly Available DBMS Svein-Olaf Hvasshovd, Svein Erik Bratsberg and Øystein Torbjørnsen Proceedings of 26th International Conference on Very Large Data Bases, Cairo, Egypt. ISBN 1-55860-715-3 September 2000
The Vagabond Temporal OID index: An index Structure for OID indexing in Temporal Object Database Systems Kjetil Nørvåg Proceedings of the 2000 International Database Engineering and Applications Symposium (IDEAS), Yokohama, Japan September 2000
A Performance Evaluation of Log-Only Temporal Object Database Systems Kjetil Nørvåg Proceedings of the 12th International Conference on Scientific and Statistical Database Management, SSDBM 2000, Berlin, Germany July 2000
An Approach to High-Performance Scalable Temporal Object Storage Kjetil Nørvåg Proceedings of the Workshop on High Performance Object Databases (HiPOD'2000), Cardiff, UK July 2000
WebSTAR - Video Database on WWW Jon Olav Hauglid, Jon Heggland and Roger Midtstraum Proceedings of Multimedia Computing and Networking 2000 (MMCN00), San Jose, California, USA January 2000
Design Issues in Transaction-Time Temporal Object Database Systems Kjetil Nørvåg Current Issues in Databases and Information Systems (Proceedings of ADBIS-DASFAA 2000), Prague, Czech Republic. Springer Verlag (Lecture Notes in Computer Science; Vol 1884) 2000
Main-Memory Management in Temporal Object Database Systems Kjetil Nørvåg Current Issues in Databases and Information Systems (Proceedings of ADBIS-DASFAA 2000), Prague, Czech Republic. Springer Verlag (Lecture Notes in Computer Science; Vol 1884) 2000

Published in 1999

Cost of Ensuring Safety in Distributed Database Management Systems Maitrayi Sabaratnam, Øystein Torbjørnsen and Svein-Olaf Hvasshovd Proceedings of the Pacific Rim International Symposium on Dependable Computing (PRDC 1999), Hong Kong, China December 1999
Cooperative database system: A constructive review of cooperative transaction models Heri Ramampiaro and Mads Nygård Proceedings of the International Symposium on Database Applications in Non-Traditional Environments (DANTE'99), Kyoto, Japan November 1999
Video Database on WWW Jon Olav Hauglid, Jon Heggland and Roger Midtstraum Proceedings of Norsk Informatikkonferanse, Trondheim, Norway November 1999
Agent-based Groupware: Challenges for Cooperative Transaction Models Heri Ramampiaro, Monica Divitini and Sobah Abbas Petersen Proceedings of International Process Technology Workshop (IPTW), Grenoble, France September 1999
Efficient Use of Signatures in Object-Oriented Database Systems Kjetil Nørvåg Proceedings of Advances in Databases and Information Systems (ADBIS'99), Maribor, Slovenia September 1999
Panel Session: Do the DBMS SW Vendors Offer the Products Required by the Industrial User in the Communication Industry? Jim Gray and Svein-Olaf Hvasshovd Databases in Telecommunications, International Workshop Co-located with VLDB-99, Edinburgh, Scotland, UK, Proceedings. Lecture Notes in Computer Science 1819 Springer 2000, ISBN 3-540-67667-8 September 1999
The Persistent Cache: Improving OID indexing in Temporal Object-Oriented Database Systems Kjetil Nørvåg Proceedings of the 25th International Conference on Very Large Databases (VLDB'99), Edinburgh, Scotland, UK September 1999
Evaluating the Effectiveness of Fault Tolerance in Replicated Database Management Systems Maitrayi Sabaratnam, Øystein Torbjørnsen and Svein-Olaf Hvasshovd Proceedings of the 29th International Symposium on Fault-Tolerant Computing, Madison, Wisconsin, USA June 1999
Improving the Access Time Performance of Serpentine Tape Drives Olav Sandstå and Roger Midtstraum Proceedings of the 15th International Conference on Data Engineering, pp. 542-551, Sydney, Australia March 1999
Low-Cost Access Time Model for Serpentine Tape Drives Olav Sandstå and Roger Midtstraum Proceedings of the 16th IEEE Symposium on Mass Storage Systems/7th NASA Goddard Conference on Mass Storage Systems and Technologies, pp. 116-127, San Diego, California, USA March 1999

Published in 1998

Optimizing OID indexing Cost in Temporal Object-Oriented Database Systems Kjetil Nørvåg and Kjell Bratbergsengen Proceedings of FODO'98, The 5th International Conference on Foundations of Data Organization, Kobe, Japan November 1998
Random I/O Performance of a Tandberg MLR1 Tape Drive Roger Midtstraum and Olav Sandstå Proceedings of Norsk Informatikkonferanse, pp. 91-102, Kristiansand, Norway November 1998
An Analytical Study of Object Identifier indexing Kjetil Nørvåg and Kjell Bratbergsengen Proceedings of DEXA 98, 9th International Conference on Database and Expert Systems Applications, Vienna, Austria September 1998
Analysis of Retrieval of Multimedia Data Stored on Magnetic Tape Olav Sandstå and Roger Midtstraum Proceedings of the 1998 IEEE International Workshop on Multi-Media Database Management Systems, pp. 54-63, Dayton, Ohio, USA September 1998
Low-Cost Compesation-Based Query Processing Øystein Grøvlen, Svein-Olaf Hvasshovd and Øystein Torbjørnsen Proceedings of the 1998 VLDB Conference, New York City, NY, USA September 1998

Published in 1997

Access Time Modeling of a MLR1 Tape Drive Olav Sandstå, Thomas Maukon Andersen, Roger Midtstraum and Rune Sætre Proceedings of Norsk Informatikkonferanse, pp. 267-278, Voss, Norway November 1997
Video Server on an ATM Connected Cluster of Workstations Olav Sandstå, Stein Langørgen and Roger Midtstraum Proceedings of the XVII International Conference of the Chilean Computer Science Society, SCCC'97, pp. 207-217, Valparaíso, Chile November 1997
Write Optimized Object-Oriented Database Systems Kjetil Nørvåg and Kjell Bratbergsengen Proceedings of the XVII International Conference of the Chilean Computer Science Society, SCCC'97, Valparaíso, Chile November 1997
Concurrency Control in Distributed Object-Oriented Database Systems Kjetil Nørvåg, Olav Sandstå and Kjell Bratbergsengen Proceedings of ADBIS'97, St.-Petersburg, Russia September 1997
Log-Only Temporal Object Storage Kjetil Nørvåg and Kjell Bratbergsengen Proceedings of the 8th International Workshop on Database and Expert Systems Applications, DEXA 97, Toulouse, France September 1997
1-Safe Algorithms for Symmetric Site Configurations Rune Humborstad, Maitrayi Sabaratnam, Svein-Olaf Hvasshovd and Øystein Torbjørnsen Proceedings of the 23rd International Conference on Very Large Data Bases, Athens, Greece August 1997
Compensation-Based Query Processing in On-Line Transaction Processing Systems Øystein Grøvlen, Øystein Torbjørnsen and Svein-Olaf Hvasshovd Proceedings of the Fifteenth British National Conference on Databases, BNCOD15, London July 1997
Improved and Optimized Partitioning Techniques in Database Query Processing Kjell Bratbergsengen and Kjetil Nørvåg Proceedings of the Fifteenth British National Conference on Databases, BNCOD15, London July 1997
Location and Replication Independent Recovery in a Highly Available Database Svein Erik Bratsberg, Svein-Olaf Hvasshovd and Øystein Torbjørnsen Proceedings of the Fifteenth British National Conference on Databases, BNCOD15, London July 1997
Concurrency Control in Distributed Page-Server Systems Kjetil Nørvåg and Olav Sandstå Proceedings of 3rd International Symposium on Programming and Systems, pages 44-56, Alger, Algerie 1997
Parallel Solutions in ClustRa Svein Erik Bratsberg, Svein-Olaf Hvasshovd and Øystein Torbjørnsen Data Engineering Bulletin, 20(2), pp. 13-20 1997

Published in 1996

Aggregate and Grouping Functions in Object-Oriented Databases Kjetil Nørvåg and Kjell Bratbergsengen Proceedings of the XVI International Conference of the Chilean Computer Science Society, SCCC'96, Valdivia, Chile November 1996
Design and Implementation of the Elvira Video Server Olav Sandstå, Stein Langørgen and Roger Midtstraum Proceedings of Norsk Informatikkonferanse 1996, pp. 259-270, Alta, Norway November 1996
Optimizing Hash Partitioning in Relational Algebra Kjell Bratbergsengen and Kjetil Nørvåg Proceedings of Norsk Informatikkonferanse 1996, Alta, Norway November 1996
On-Line Query Processing through Undo/No-Redo Compensation Øystein Grøvlen, Svein-Olaf Hvasshovd and Øystein Torbjørnsen International Workshop on Advanced Transaction Models and Architectures, Goa, India September 1996
Providing a Highly Available Database by Replication and Online Self-Repair Svein Erik Bratsberg, Øystein Torbjørnsen, Svein-Olaf Hvasshovd and Bjørn Munch In International Journal of Engineering Intelligent Systems for Electrical Engineering and Communications, Special Issue on Databases and Telecommunications, pages 131-139 September 1996
A Highly Available, Real-Time Database System for Telecom Applications Svein-Olaf Hvasshovd, Øystein Torbjørnsen, Svein Erik Bratsberg and Per Holager Sixth IFIP/ICCC Conference on Information Network and Data Communication, June 17-19, Trondheim, Norway, Chapman and Hall, pp 234-245 1996
OMODIS - Object-Oriented Modeling and Database Support for Distributed Multimedia Systems Vera Goebel, Mads Nygård and et. al. NIK´96: 9th Norwegian Informatics Conference, Alta - Norway 1996
Towards Real-Time Performance in a Scalable, Continuously Available Telecom DBMS Øystein Torbjørnsen, Svein-Olaf Hvasshovd and Young-Kuk Kim Online-Proceedings of the First International Workshop on Real-Time Databases: Issues and Applications, March 7-8, 1996, Newport Beach, California, USA 1996

Published in 1995

Integrated Video Archive Tools Rune Hjelsvold, Stein Langørgen, Roger Midtstraum and Olav Sandstå Proceedings of ACM Multimedia '95, San Francisco, C.A. November 1995
A Temporal Foundation of Video Databases Rune Hjelsvold, Roger Midtstraum and Olav Sandstå Proceedings of the International Workshop on Temporal Databases, Zürich, Switzerland, 17-18 September 1995
The ClustRa Telecom Database: High Availability, High Throughput, and Real-Time Response Svein-Olaf Hvasshovd, Øystein Torbjørnsen, Svein Erik Bratsberg and Per Holager Proceedings of 21th International Conference on Very Large Data Bases, Zurich, Switzerland. ISBN 1-55860-379-4 September 1995
Searching and Browsing a Shared Video Database Rune Hjelsvold, Roger Midtstraum and Olav Sandstå Proceedings of the International Workshop on Multi-Media Database Management Systems, Blue Mountain Lake, New York August 1995
Databases for Video Information Sharing Rune Hjelsvold and Roger Midtstraum Proceedings of the IS&T/SPIE Symposium on Electronic Imaging Science and Technology, Conference on Storage and Retrieval for Image and Video Databases III, San Jose, C.A. February 1995
Different Roles and Mutual Dependencies of Data, Information and Knowledge - An AI Perspective on their Integration Agnar Aamodt and Mads Nygård Data and Knowledge Engineering, Volume 16 (1995), Pages 191 - 222 (32 pages), North Holland Elsevier, Amsterdam - The Netherlands 1995
Parallel Database Machines Kjell Bratbergsengen Rivista di Informatica, Vol.XXV, n.4 ottobre-dicembre 1995
RTI / ITS in Integrated Operation - Norway's Regional Road Traffic Centres Bente Gaarder Andersen, Mads Nygård and et. al. IEEE VNIS ´95: 6th Internat. Conference on Vehicle Navigation & Information Systems, Seattle - USA 1995
Tailor-Made Concurrency Control - Distributed Transactions As A Case Mads Nygård AJIS: Australian Journal of Information Systems, Volume 3, Number 1 (1995), Pages 53 - 70 (18 pages), Sydney - Australia 1995

Published in 1994

Digital Video Archives Rune Hjelsvold and Roger Midtstraum Proceedings of Norsk Informatikkonferanse 1994, Molde, Norway November 1994
Sharing and Reuse of Video Information Rune Hjelsvold Presented at the ACM Multimedia'94 Conference Workshop on Multimedia Database Management Systems, San Francisco, C.A. October 1994
Digital Television Archives - Combining Computer Technology and Video Rune Hjelsvold Presented at the Annual IASA/FIAT Conference 1994, Bogensee, Germany September 1994
Modelling and Querying Video Data Rune Hjelsvold and Roger Midtstraum Proceedings of the 20th International Conference on Very Large Databases, Santiago, Chile September 1994
Fault-Tolerant Mechanisms in Distributed Database Management Systems Svein-Olaf Hvasshovd and Øystein Torbjørnsen Nordic Seminar on Dependable Computing Systems, Lyngby, Denmark August 1994
Application of an Abstract Machine Supporting Fault-Tolerance in a Parallel Database Server Øystein Torbjørnsen and Svein-Olaf Hvasshovd International Journal of Computer Systems Science and Engineering, Volume 9, Number 2 April 1994
Video Information Contents and Architecture Rune Hjelsvold Proceedings of the 4th International Conference on Extending Database Technology, Cambridge, UK March 1994
Concurrency Control and Distributed Transactions: An Efficient Approach Mads Nygård SCCC ´94: 14th Internat. Conference of the Chilean Computer Science Society, Conception - Chile 1994
Partial Recoverability with Distributed Transactions Mads Nygård IEEE IPCCC´94: 1994 Internat. Phoenix Conference on Computers and Communications, Phoenix - USA 1994
Recovery of Distributed Transactions: A Flexible Approach Mads Nygård SCCC ´94: 14th Internat. Conference of the Chilean Computer Science Society, Conception - Chile 1994
Reflections on State-of-the-Art within RTI / IVHS Mads Nygård IEEE VNIS ´94: 5th Internat. Conference on Vehicle Navigation & Information Systems, Tokyo - Japan 1994
Tailor-Made Concurrency Control with Specialized Distributed Transactions Mads Nygård ACIS´94: 5th Australasian Conference on Information Systems, Melbourne - Australia 1994

Published in 1993

An Abstract Machine Supporting Fault-Tolerance in a Parallel Database Server Øystein Torbjørnsen and Svein-Olaf Hvasshovd The 1993 Pacific Rim International Symposium on Fault Tolerant Systems, Melbourne, Australia December 1993
Article-Acquisition: A Scenario for Non-Serializability in a Distributed Database Mads Nygård PARLE ´93: 1993 Parallel Architectures and Languages Europe Conference, Munich - Germany 1993
BINMOD: A Model for Non-Serializability in Distributed Databases Mads Nygård BNCOD 11: 11th British National Conference on Databases, Stoke - England 1993
Multi-Criteria: Degrees of Recoverability in Distributed Databases Mads Nygård PARLE ´93: 1993 Parallel Architectures and Languages Europe Conference, Munich - Germany 1993
Parallel Relational Database Algorithms, 1991 Øystein Torbjørnsen Parallel Computing on Distributed Memory Multiprocessors, NATO ASI Series, Series F: Computer and Systems Sciences,Volume 103, Springer-Verlag 1993
Relaxed Criteria for Concurrency Control in Distributed Databases Mads Nygård IFIP TC6´93 Internat. Symposium on Network Information Processing Systems, Sofia - Bulgaria 1993
Road Transport Informatics: Conceptual Framework and Technological Components Mads Nygård and Agnar Aamodt IEEE VNIS ´93: 4th Internat. Conference on Vehicle Navigation & Information Systems, Ottawa - Canada 1993
Sensible Variants of Non-Serializability in Replicated Distributed Databases Mads Nygård IFIP TC6´93 Internat. Symposium on Network Information Processing Systems, Sofia - Bulgaria 1993
VARCRIT: Degrees of Serializability in Replicated Distributed Databases Mads Nygård BNCOD 11: 11th British National Conference on Databases, Stoke - England 1993

Published in 1992

A Process Architecture Supporting Fault-Tolerance in a Parallel Database Server Svein-Olaf Hvasshovd and Øystein Torbjørnsen In Proceedings of the Nordic Seminar on Dependable Computing Systems 1992, Trondheim, Norway August 1992
Automatic Traffic Control in Norway - Functional and Political Issues Mads Nygård and et. al. IEEE VNIS ´92: 3rd Internat. Conference on Vehicle Navigation & Information Systems, Oslo - Norway 1992

Published in 1991

The Impact of High Reliability, High Capacity Database Servers on Telecommunicatio Systems and Services Kjell Bratbergsengen and Tore Sæter 6th World Telecommunication Exhibition and Forum, TeleCom 91, Geneva October 1991
A Continously Available and Highly Scalable Transaction Server: Design Experience from the HypRa Project Svein-Olaf Hvasshovd, Tore Sæter, Øystein Torbjørnsen, Petter Moe and Oddvar Risnes Proceedings from The Fourth International Workshop on High Performance Transaction Systems September 1991
Critical Issues in the Design of a Fault-Tolerant Multiprocessor Database Server Svein-Olaf Hvasshovd, Tore Sæter and Øystein Torbjørnsen Proceedings from the 1991 Pacific Rim International Symposium on Fault-Tolerant Systems, IEEE September 1991

Published in 1990

Critical Issues in the Design of a Fault-Tolerant Multiprocessor Database Server Svein-Olaf Hvasshovd, Øystein Torbjørnsen and Tore Sæter Proceedings from Feltoleranta Datorsystem 1990, Gothenburg, Sweden November 1990
Relational Algebra Operations, 1990 Kjell Bratbergsengen PRISMA Project Workshop, Nordwijk, The Netherlands 1990

Published in 1989

Fast Database Computers Kjell Bratbergsengen Proceedings of the NATO Advanced Research Workshop on Supercomputing, Trondheim, Norway June 1989
The Development of the CROSS8 and HC16-186 Parallel (Database) Computers Kjell Bratbergsengen and Torgrim Gjelsvik Sixth International Workshop on Database Machines, France June 1989
The Development of the Parallel Database Computer HC16-186 Kjell Bratbergsengen Fourth Conference on Hypercubes, Concurrent Computers and Applications, Monterey, California March 1989
Sorting Large Data Files on the HC16 Parallel Database Computer Bjørn A.W. Baugstø and Jarle F. Greipsland IWDM 1989

Published in 1988

Performance Analysis of the Hypercube Line Switch Kjell Bratbergsengen Proceedings of the third conference on Hypercube concurrent computers and applications, Jet Propulsion Laboratory January 1988

Published in 1987

Algebra Operations on a Parallel Computer - Performance Evaluation Kjell Bratbergsengen The 5th International Workshop on Database Machines,Karuizawa, Japan October 1987

Published in 1984

Hashing Methods and Relational Algebra Operations Kjell Bratbergsengen Proceedings of the 10th International Conference on Very Large Databases 1984

Published in 1981

A feature analysis of ASTRAL Kjell Bratbergsengen and Tor Stålhane The Relational Task Group - Feature Analysis of Relational Database Systems, Michael Brodie and Joachim Smidt, , Springer Verlag 1981

Published in 1980

A Neighbor Connected Processor Network for Performing Relational Algbra Operations Kjell Bratbergsengen, Rune Larsen, Oddvar Risnes and Terje Aandalen 5th Workshop on Computer Architecture for Non-Numeric Processing March 1980

Published in 1978

ASTRAL: A Structured and Unified Approach to Database Design and Manipulation Tore Amble, Kjell Bratbergsengen and Oddvar Risnes Proceedings of Database Architecture Conference, Venice 1978

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