Author Publications

2013

Habib, Mena B. and Keulen van, Maurice (2013) A hybrid approach for robust multilingual toponym extraction and disambiguation. In: International Conference on Language Processing and Intelligent Information Systems, LP&IIS 2013, 17-18 June 2013, Warsaw, Poland.

Habib, Mena B. and Keulen van, Maurice and Zhu, Zhemin (2013) Concept Extraction Challenge: University of Twente at #MSM2013. In: 3rd workshop on Making Sense of Microposts, #MSM 2013, 13 May 2013, Rio de Janeiro, Brazil.

2012

Graaff de, Victor and Keulen van, Maurice and By de, Rolf A. (2012) Towards Geosocial Recommender Systems. In: 4th International Workshop on Web Intelligence & Communities, WI&C 2012, 16 April 2012, Lyon, France.

Habib, Mena B. and Keulen van, Maurice (2012) Improving Toponym Extraction and Disambiguation Using Feedback Loop. In: 12th International Conference on Web Engineering, ICWE 2012, 23-27 July 2012, Berlin, Germany.

Habib, Mena B. and Keulen van, Maurice (2012) Improving Toponym Disambiguation by Iteratively Enhancing Certainty of Extraction. In: 14th International Conference on Knowledge Discovery and Information Retrieval, KDIR 2012, 4-7 October 2012, Barcelona, Spain.

Habib, Mena B. and Keulen van, Maurice (2012) Unsupervised improvement of named entity extraction in short informal context using disambiguation clues. In: Workshop on Semantic Web and Information Extraction, SWAIE 2012, 8-12 October 2012, Galway, Ireland.

Keulen van, Maurice (2012) Managing Uncertainty: The Road Towards Better Data Interoperability. it - Information Technology, 54 (3). pp. 138-146. ISSN 1611-2776

Khelghati, Mohammadreza and Hiemstra, Djoerd and Keulen van, Maurice (2012) Size estimation of non-cooperative data collections. In: Dutch-Belgian Database Day 2012, DBDBD 2012, 21 November 2012, Brussels, Belgium.

Khelghati, Mohammadreza and Hiemstra, Djoerd and Keulen van, Maurice (2012) Deep web entity monitoring. [Report]

Panse, Fabian and Ritter, Norbert and Keulen van, Maurice (2012) Indeterministic Handling of Uncertain Decisions in Deduplication. Journal of Data and Information Quality . ISSN 1936-1955

2011

Boerman, Tjeerd W. and Keulen van, Maurice and Vet van der, Paul and Severing, Edouard I. (2011) Integration of Biological Sources: Exploring the Case of Protein Homology. [Report]

Habib, Mena B. and Keulen van, Maurice (2011) Information Extraction, Data Integration, and Uncertain Data Management: The State of The Art. [Report]

Habib, Mena B. and Keulen van, Maurice (2011) Neogeography: The Challenge of Channelling Large and Ill-Behaved Data Streams. [Report]

Habib, Mena B. and Keulen van, Maurice (2011) Named Entity Extraction and Disambiguation: The Reinforcement Effect. In: 5th International Workshop on Management of Uncertain Data, MUD 2011, 29 August 2011, Seattle, WA, USA.

Habib, Mena B. and Keulen van, Maurice (2011) Improving Named Entity Disambiguation by Iteratively Enhancing Certainty of Extraction. [Report]

Habib, Mena B. and Keulen van, Maurice (2011) Named Entity Extraction and Disambiguation from an Uncertainty Perspective. In: Dutch Belgian Database Day, DBDBD 2011, 2 December 2011, University of Twente, The Netherlands.

Keijzer de, Ander and Keulen van, Maurice, eds. (2011) The Fifth International VLDB Workshop on Management of Uncertain Data. CTIT Workshop Proceedings (WP11-0). Centre for Telematics and Information Technology, University of Twente, Enschede, The Netherlands.

Keijzer de, Ander and Keulen van, Maurice (2011) Preface. In: The Fifth International VLDB Workshop on Management of Uncertain Data. CTIT Workshop Proceedings (WP11-0). Centre for Telematics and Information Technology, University of Twente, Enschede, The Netherlands, V.

Keulen van, Maurice and Habib, Mena B. (2011) Handling uncertainty in information extraction. In: 7th International Workshop on Uncertainty Reasoning for the Semantic Web, 23 Oct 2011, Bonn, Germany.

2010

Abdel Kader, Riham and Boncz, Peter and Manegold, Stefan and Keulen van, Maurice (2010) ROX: The Robustness of a Run-time XQuery Optimizer Against Correlated Data. In: 26th International Conference on Data Engineering, ICDE 2010, 1-6 March 2010, Long Beach, California, USA. (In Press)

Abdel Kader, Riham and Keulen van, Maurice and Boncz, Peter and Manegold, Stefan (2010) Run-time Optimization for Pipelined Systems. In: Proceedings of the IV Alberto Mendelzon Workshop on Foundations of Data Management (AMW2010), 17-20 May 2010, Buenos Aires, Argentina. (In Press)

Hollander, E.S. and Keulen van, M. (2010) Storing and Querying Probabilistic XML Using a Probabilistic Relational DBMS. In: 4th International Workshop on Management of Uncertain Data, MUD 2010, 13 Sep 2010, Singapore. (In Press)

Keijzer de, A. and Keulen van, M., eds. (2010) The Fourth International VLDB Workshop on Management of Uncertain Data. CTIT Workshop Proceedings ; WP10-04 (WP10-04). Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands.

Keulen van, Maurice (2010) Onzekere databases. DB/M : database magazine, 21 (4). pp. 22-27. ISSN 0925-6911

Panse, Fabian and Keulen van, Maurice and Ritter, Norbert (2010) Indeterministic Handling of Uncertain Decisions in Duplicate Detection. [Report]

2009

Keijzer de, Ander and Keulen van, Maurice, eds. (2009) Proceedings of the Third International Workshop on Management of Uncertain Data (MUD2009). CTIT Workshop Proceedings Series (WP-CTI). Centre for Telematics and Information Technology, University of Twente, Enschede, The Netherlands.

Keijzer de, Ander and Keulen van, Maurice (2009) Preface. In: Third International Workshop on Management of Uncertain Data, MUD 2009, 28 Aug 2008, Lyon, France.

Keulen van, Maurice (2009) IMPrECISE: Good-is-good-enough Data Integration. In: Uncertainty Management in Information Systems : Dagstuhl Seminar, 12 - 17 Oct 2008, Dagstuhl, Germany.

Keulen van, Maurice and Keijzer de, Ander (2009) Qualitative effects of knowledge rules and user feedback in probabilistic data integration. VLDB Journal, 18 (5). pp. 1191-1217. ISSN 1066-8888

Koch, C. and König-Ries, B. and Markl, V. and van Keulen, M. (2009) 08421 Executive Summary - Uncertainty Management in Information Systems. In: Proceedings of Dagstuhl Seminar 08421 on Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany.

Koch, C. and Re, C. and Olteanu, D. and Lenz, H.-J. and van Keulen, M. and Haas, P.J. and Pan, J.Z. (2009) 08421 Working Group: Report of the Probabilistic Databases Benchmarking. In: Proceedings of Dagstuhl Seminar 08421 on Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany.

Panse, Fabian and Keulen van, Maurice and Keijzer de, Ander and Ritter, Norbert (2009) Duplicate Detection in Probabilistic Data. In: 2nd International Workshop on New Trends in Information Integration, NTII, March 1-6, 2010, Long Beach, California, USA. (In Press)

Panse, Fabian and Keulen van, Maurice and Keijzer de, Ander and Ritter, Norbert (2009) Duplicate Detection in Probabilistic Data. [Report] (In Press)

Spiliopoulou, M. and Keulen van, M. and Lenz, H.-J. and Wijsen, J. and Renz, M. and Kruse, R. and Stern, M. (2009) 08421 Working Group: Imprecision, Diversity and Uncertainty: Disentangling Threads in Uncertainty Management. In: Dagstuhl Seminar 08421 on Uncertainty Management in Information Systems, 12-17 Oct 2008, Dagstuhl, Germany.

Veldman, Irma and Keijzer de, Ander and Keulen van, Maurice (2009) Compression of Probabilistic XML documents. In: 3rd International Conference on Scalable Uncertainty Management, SUM 2009, 28-30 September 2009, Washington, DC, USA. (In Press)

van Keulen, M. (2009) Probabilistic Data Integration. In: 08421 Abstracts Collection - Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany.

2008

Keijzer de, Ander and Keulen van, Maurice (2008) IMPrECISE: Good-is-good-enough data integration. In: 24th International Conference on Data Engineering, ICDE, 7-12 April 2008, Cancun, Mexico.

Nunes Leal Franqueira, V. and van Keulen, M. (2008) Analysis of the NIST database towards the composition of vulnerabilities in attack scenarios. [Report]

de Keijzer, A. and van Keulen, M. and Missier, P. and Lin, X. (2008) Preface. In: Proceedings of the International Workshop on Quality in Databases and Management of Uncertain Data (QDBMUD2008), 24 Aug 2008, Auckland, New Zealand.

de Keijzer, A. and van Keulen, M. and Missier, P. and Lin, X., eds. (2008) Proceedings of the International Workshop on Quality in Databases and Management of Uncertain Data (QDBMUD2008). CTIT Workshop Proceedings Series (WP-CTI). Centre for Telematics and Information Technology, University of Twente, Enschede, The Netherlands.

van Keulen, M. and de Keijzer, A. (2008) Qualitative Effects of Knowledge Rules in Probabilistic Data Integration. [Report]

2007

Abdel Kader, R. and van Keulen, M. (2007) Overview of query optimization in XML database systems. [Report]

Blanken, Henk and Feng, Ling and Keulen van, Maurice and Blok, Henk Ernst (2007) Introduction. In: Multimedia Retrieval. Springer, Berlin, Germany, pp. 1-22. ISBN 9783540728948

Boncz, Peter A. and Grust, Torsten and Siméon, Jerome and Keulen van, Maurice (2007) 06472 Abstracts Collection - XQuery Implementation Paradigms. In: XQuery Implementation Paradigms, 19-22 November 2006, Dagstuhl, Germany.

Boncz, Peter A. and Grust, Torsten and Siméon, Jerome and Keulen van, Maurice (2007) 06472 Executive Summary - XQuery Implementation Paradigms. In: XQuery Implementation Paradigms, 19-22 November 2006, Dagstuhl, Germany.

Keijzer de, Ander and Keulen van, Maurice and Dekhtyar, Alex (2007) Preface. In: Proceedings of the first international VLDB workshop on Management of Uncertain Data. Proceedings Workshop Series (WP-CTI). Centre for Telematics and Information Technology, Enschede, iii.

Keulen van, Maurice and Sikkel, Klaas (2007) Computerondersteuning voor groepscommunicatie en samenwerken. In: ICT-Zakboek. PBNA Polyzakboekjes . Reed Business Information, Den Haag, pp. 341-350. ISBN 9789062286713

Schoute, A.L. and Keulen van, M. (2007) Operating Systems. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapte). Reed Business Information, Den Haag, pp. 761-770. ISBN 9789062286713

Siebes, A.P.J.M. and van Keulen, M. (2007) Data warehousing en data mining. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapte). Reed Business Information, Den Haag, pp. 332-341. ISBN 9789062286713

de Keijzer, A. and van Keulen, M. (2007) Quality Measures in Uncertain Data Management. In: Proceedings of the First International Conference on Scalable Uncertainty Management (SUM2007), 10-12 Oct 2007, Washington, DC, USA.

de Keijzer, A. and van Keulen, M. (2007) User Feedback in Probabilistic XML. [Report]

de Keijzer, A. and van Keulen, M. and Dekhtyar, A., eds. (2007) Proceedings of the first international VLDB workshop on Management of Uncertain Data. Proceedings Workshop Series (WP-CTI). Centre for Telematics and Information Technology, Enschede.

van Keulen, M. (2007) Procesautomatisering. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapte). Reed Business Information, Den Haag, pp. 212-222. ISBN 9789062286713

van Keulen, M. (2007) Gegevensbanken. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapte). Reed Business Information, Den Haag, pp. 852-881. ISBN 9789062286713

2006

Boncz, P. and Grust, T. and van Keulen, M. and Manegold, S. and Rittinger, J. and Teubner, J. (2006) MonetDB/XQuery: a fast XQuery processor powered by a relational engine. In: Proceedings of the 2006 ACM SIGMOD international conference on Management of data, 26-29 June 2006, Chicago, IL, USA.

Boncz, Peter and Flokstra, Jan and Grust, Torsten and Keulen van, Maurice and Manegold, Stefan and Mullender, Sjoerd and Rittinger, Jan and Teubner, Jens (2006) MonetDB/XQuery - Consistent & Efficient Updates on the Pre/Post Plane. In: 10th International Conference on Extending Database Technology, EDBT 2006, 26-31 March 2006, Munich, Germany.

Keijzer de, Ander and Keulen van, Maurice, eds. (2006) Proceedings of the 2nd Twente Data Management Workshop (TDM'06) on Uncertainty in Databases. CTIT Workshop Proceedings Series (WP-CTI). Centre for Telematics and Information Technology, University of Twente, Enschede, The Netherlands.

Keijzer de, Ander and Keulen van, Maurice and Li, Yiping (2006) Taming Data Explosion in Probabilistic Information Integration. [Report]

Keijzer de, Ander and Keulen van, Maurice and Li, Yiping (2006) Taming Data Explosion in Probabilistic Information Integration. In: International Workshop on Inconsistency and Incompleteness in Databases, IIDB 2006, 26 Mar 2006, Munich, Germany.

Smiljanic, M. and van Keulen, M. and Jonker, W. (2006) Effectiveness Bounds for Non-Exhaustive Schema Matching Systems. In: Proceedings of the 22nd International Conference on Data Engineering Workshops (ICDEW'06), 7 Apr 2006, Atlanta, Georgia.

Smiljanic, Marko and Keulen van, Maurice and Jonker, Willem (2006) Using Element Clustering to Increase the Efficiency of XML Schema Matching. In: 22nd International Conference on Data Engineering Workshops, ICDEW'06, 3-7 April, 2006, Atlanta, Georgia.

2005

Boncz, Peter and Grust, Torsten and Keulen van, Maurice and Manegold, Stefan and Rittinger, Jan and Teubner, Jens (2005) Pathfinder: XQuery - The Relational Way. In: 31st International Conference on Very Large Databases, VLDB 2005, 30 Aug-2 Sep 2005, Trondheim, Norway.

Keijzer de, Ander and Keulen van, Maurice (2005) Information Integration - the process of integration, evolution and versioning. [Report]

Keijzer de, Ander and Keulen van, Maurice (2005) Rule-based Information Integration. [Report]

Keulen van, Maurice and Keijzer de, Ander and Alink, Wouter (2005) A probabilistic XML approach to data integration. In: 21st International Conference on Data Engineering, ICDE 2005, 5-8 April 2005, Tokyo, Japan.

Smiljanic, Marko and Keulen van, Maurice and Jonker, Willem (2005) Formalizing the XML Schema Matching Problem as a Constraint Optimization Problem. In: 16th International Conference on Database and Expert Systems Applications, DEXA 2005, 22-26 Aug 2005, Copenhagen, Denmark.

2004

Grust, Torsten and Keulen van, M. and Teubner, J. (2004) Accelerating XPath Evaluation in Any RDBMS. ACM Transactions on Database Systems, 29 (1). pp. 91-131. ISSN 0362-5915

Keijzer de, Ander and Keulen van, Maurice (2004) A probabilistic database extension. [Report]

Keijzer de, Ander and Keulen van, Maurice (2004) A possible world approach to uncertain relational data. In: 15th International Workshop on Database and Expert Systems Applications, 30 Aug.-3 Sept. 2004, Zaragoza, Spain.

Keulen van, Maurice (2004) Relational Approach to Logical Query Optimization of XPath. In: First Twente Data Management Workshop, TDM '04 on XML Databases and Information Retrieval, 21 Jun 2004, Enschede, The Netherlands.

Mayer, Sabine and Grust, Torsten and Keulen van, Maurice and Teubner, Jens (2004) An Injection with Tree Awareness: Adding Staircase Join to PostgreSQL. In: 30th International Conference on Very Large Data Bases, VLDB 2004, 31 Aug - 3 Sep 2004, Toronto, Canada.

Ruth van, Joeri and Fokkinga, Maarten and Keulen van, Maurice (2004) The DoDo Query Flattening System. [Report]

Smiljanic, Marko and Keulen van, Maurice and Jonker, Willem (2004) Defining the XML Schema Matching Problem for a Personal Schema Based Query Answering System. [Report]

2003

Grust, Torsten and Keulen van, Maurice (2003) Tree Awareness for Relational DBMS Kernels: Staircase Join. In: Intelligent Search on XML Data: Applications, Languages, Models, Implementations, and Benchmarks. Lecture Notes in Computer Science, 2818 . Springer, Berlin, Germany, pp. 231-245. ISBN 9783540407683

Grust, Torsten and Keulen van, Maurice and Teubner, J. (2003) Staircase Join: Teach a Relational DBMS to Watch its (Axis) Steps. In: 29th International Conference on Very Large Databases, VLDB 2003, 9-12 Sep 2003, Berlin, Germany.

Hiemstra, Djoerd and Vries de, Arjen P. and Blok, Henk Ernst and Keulen van, Maurice and Jonker, Willem and Kersten, Martin L. (2003) CIRQUID: Complex Information Retrieval Queries in a Database. [Report]

Keulen van, M. and Vonk, J. and Vries de, A.P. and Flokstra, J. and Blok, H.E. (2003) Moa and the multi-model architecture: a new perspective on XNF2. In: Proceedings of the 14th International Conference on Database and Expert Systems Applications (DEXA2003), 1-5 Sep 2003, Prague, Czech Republic.

Keulen van, Maurice and Grust, Torsten and Teubner, Jens (2003) Bridging the GAP Between Relational and Native XML Storage with Staircase Join. In: Tagungsband zum 15. GI-Workshop Grundlagen von Datenbanken, 10-13 Jun 2003, Tangermünde, Sachsen-Anhalt, Germany.

Zivkovic, Z. and Petkovic, M. and Mierlo van, R. and Keulen van, M. and Heijden van der, F. and Jonker, W. and Rijnierse, E. (2003) Two video analysis applications using foreground/background segmentation. In: VIE2003 International Conference on Visual Information Engineering, 7-9 July 2003, Guildford, UK.

2002

Keulen van, Maurice and Vonk, Jochem and Vries de, Arjen P. and Flokstra, Jan and Blok, Henk Ernst (2002) Moa: extensibility and efficiency in querying nested data. [Report]

Smiljanic, Marko and Blanken, Henk and Keulen van, Maurice and Jonker, Willem (2002) Distributed XML Database Systems. [Report]

2001

Keulen van, Maurice (2001) XML: De eend met de gouden eieren? I/O Vivat, 17 (1). pp. 27-34. ISSN 1389-0468

1997

Keulen van, Maurice (1997) Formal operation definition in object-oriented databases. thesis.

1996

Capobianchi, R. and Mautref, M. and Keulen van, M. and Balsters, H. (1996) An architecture and methodology for the design and development of Technical Information Systems. In: 9th International Symposium on Methodologies for Intelligent Systems, ISMIS 1996, 9-13 Jun 1996, Zakopane, Poland.

1995

Keulen van, M. and Skowronek, J. and Apers, P.M.G. and Balsters, H. and Blanken, H.M. and By de, R.A. and Flokstra, J. (1995) A Framework for Representation, Validation and Implementation of Database Application Semantics. [Report]

1994

Flokstra, Jan and Keulen van, Maurice and Skowronek, Jacek (1994) The IMPRESS DDT: a database design toolbox based on a formal specification language. In: 1994 ACM SIGMOD International Conference on Management of Data, SIGMOD 1994, 24-27 May 1994, Minneapolis, Minnesota, USA.