LongRec was a research project on persistent, reliable and trustworthy long-term archival of digital documents, with emphasis on availability and use of documents. LongRec was initiated and coordinated by DNV and performed in cooperation with the database group at NTNU, NR, and a number of business partners, with partial funding from the Norwegian Research Council.

The particular problems addressed by LongRec typically emerge when document lifetime exceeds 20 years, and LongRec imposes no upper limit on the lifetime. The main objectives for the LongRec partners have been:

To enable transition to digital original documents and digital work processes for information that must be available and in use over decades, and
To explore the potential for commercial products/services in this area.

The final report is available here.

For more information on the NTNU part of the project, please contact Kjetil Nørvåg.

PhDs Awarded and Funded by LongRec

Nattiya Kanhabua: Time-aware Approaches to Information Retrieval (Ph.D., February 2012)

Publications

Below is a list of publications made by partial support from the LongRec project, ordered by topic.

Search

Nattiya Kanhabua, Klaus Berberich and Kjetil Nørvåg, Learning to Select a Time-aware Ranking Model (poster), Proceedings of SIGIR'2012, Portland, Oregon, USA, August 2012.
Nattiya Kanhabua, Roi Blanco and Michael Matthews, Ranking Related News Predictions, Proceedings of the 34th Annual ACM SIGIR Conference (SIGIR'11), Beijing, China, July 2011.
Nattiya Kanhabua and Kjetil Nørvåg, Time-based Query Performance Predictors (poster), Proceedings of the 34th Annual ACM SIGIR Conference (SIGIR'11), Beijing, China, July 2011.
Nattiya Kanhabua and Kjetil Nørvåg, A Comparison of Time-aware Ranking Methods (poster), Proceedings of the 34th Annual ACM SIGIR Conference (SIGIR'11), Beijing, China, July 2011.
Nattiya Kanhabua and Kjetil Nørvåg, QUEST: Query Expansion using Synonyms over Time (demo paper), Proceedings of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD'10), Barcelona, Spain, September 2010.
Nattiya Kanhabua and Kjetil Nørvåg, Determining Time of Queries for Re-ranking Search Results, Proceedings of the 14th European Conference on Research and Advanced Technology for Digital Libraries 2010 (ECDL'10), Glasgow, Scotland, UK, September 2010.
Nattiya Kanhabua and Kjetil Nørvåg, Exploiting Time-based Synonyms in Searching Document Archives, Proceedings of the ACM/IEEE Conference on Digital Libraries (JCDL'10), Brisbane, Australia, June 2010.
Nattiya Kanhabua and Kjetil Nørvåg, Using Temporal Language Models for Document Dating (demo paper), Proceedings of the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD'09), Bled, Slovenia, September 2009.
Nattiya Kanhabua, Exploiting temporal information in retrieval of archived documents (doctoral consortium), Proceedings of the 32nd Annual ACM SIGIR Conference (SIGIR'09), Boston, Massachusetts, July 2009.
Nattiya Kanhabua and Kjetil Nørvåg, Improving Temporal Language Models For Determining Time of Non-Timestamped Documents, Proceedings of the 12th European Conference on Research and Advanced Technology for Digital Libraries 2008 (ECDL'08), Aarhus, Denmark, September 2008.

Records transitions survival

Feng Luan, Mads Nygård, Thomas Mestl, A Survey of Digital Preservation Strategies, World Digital Libraries, Vol. 3, No. 2, December 2010.
Feng Luan, Mads Nygård, MMET: A Migration Metadata Extraction Tool for Long-term Preservation Systems, Proceedings of DICTAP'2011, Dijon, France, June 2011.
Feng Luan, Thomas Mestl, Mads Nygård, Quality Requirements of Migration Metadata in Long-term Digital Preservation Systems, Proceedings of MTSR'2010, Madrid, Spain, Oct 2010.
Feng Luan, Mads Nygård, Thomas Mestl, A Mathematical Framework for Modeling and Analyzing Migration Time, Proceedings of JCDL'2010, Gold Coast, Australia, June 2010.
Feng Luan, Mads Nygård, Records Transition Survival When Used over Several Decades, Proceedings of ICDL'2010, New Delhi, India, Feb 2010.
Feng Luan, Mads Nygård, Lars Gaustad, Inger-Mette Gustavsen, The Challenges of Migration as a Long-term Preservation Strategy: The Findings of TEAM Norway and LongRec, Proceedings of 1st International Symposium of the InterPARES Project, Seoul, Korea, June 2009.

Preservation of trust and security

Jianqiang Ma, Habtamu Abie, Torbjørn Skramstad, and Mads Nygård, On Time, Conflict, Weighting, and Dependency Aspects of Assessing the Trustworthiness of Digital Records, The Fourth International Conference on Dependability (DEPEND2011), August 2011.
Jianqiang Ma, Habtamu Abie, Torbjørn Skramstad, and Mads Nygård, Assessment of the Trustworthiness of Digital Records, The Fifth IFIP WG11.11 International Conference on Trust Management (IFIPTM2011), June 2011. (Poster)
Jianqiang Ma, Habtamu Abie, Torbjørn Skramstad, and Mads Nygård, Requirements for Evidential Value for the Assessment of the Trustworthiness of Digital Records over Time, The 2009 IEEE International Symposium on Trust, Security and Privacy for Pervasive Applications (TSP2009), October 2009.
Jianqiang Ma, Habtamu Abie, and Torbjørn Skramstad, Preservation of Trust and Security in Long-Term Record Management, The Graduate Symposium of Sixth Annual Conference on Privacy, Security and Trust (PST2008), October 2008.

Preservation of semantic value

Geir Solskinnsbakk, Jon Atle Gulla, Veronica Haderlein, Per Myrseth, and Olga Cerrato, Quality of Subsumption Hierarchies in Ontologies, Proceedings of NLDB 2009, Saarbrücken, Germany, June 2009.
Jon Atle Gulla, Geir Solskinnsbakk, Per Myrseth, Veronica Haderlein, and Olga Cerrato, Semantic Drift in Ontologies, Proceedings of the 6th International Conference on Web Information Systems and Technologies (WEBIST 2010), 2010
Per Myrseth, Jon Atle Gulla, Veronica Haderlein, Geir Solskinnsbakk and Olga Cerrato, Utilizing Ageing Information, 10th European Conference on e-Government (ECEG 2010), Ireland, June 2010.