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Author: van Keulen, M.
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2016

Berrada, G. and van Keulen, M. and de Keijzer, A. (2016) Evidence combination for incremental decision-making processes. Technical Report CTIT-TR-16-01, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
de Graaff, V. and de By, R.A. and van Keulen, M. (2016) Automated semantic trajectory annotation with indoor point-of-interest visits in urban areas. In: Proceedings of the 31st ACM Symposium on Applied Computing, ACM SAC 2016, 4-8 April 2016, Pisa, Italy. pp. 552-559. ACM. ISBN 978-1-4503-3739-7
Habib, M.B. and van Keulen, M. (2016) TwitterNEED: a hybrid approach for named entity extraction and disambiguation for tweets. Natural language engineering, 22 (03). pp. 423-456. ISSN 1351-3249 *** ISI Impact 0,886 ***
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2016) Efficient Web Harvesting Strategies for Monitoring Deep Web Content. Technical Report TR-CTIT-16-05, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2016) Efficient Web Harvesting Strategies for Monitoring Deep Web Content. In: Proceedings of the 18th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2016), 28-30 Nov 2016, Singapore. pp. 389-393. ACM. ISBN 978-1-4503-4807-2
Wanders, B. and van Keulen, M. and Flokstra, Jan (2016) JudgeD: a probabilistic datalog with dependencies. In: Proceedings of the Workshop on Declarative Learning Based Programming, DeLBP 2016, 13 February 2016, Phoenix, AZ, USA. AAAI Press.
Wevers, L. and Huisman, M. and van Keulen, M. (2016) Lazy Evaluation for Concurrent OLTP and Bulk Transactions. In: Proceedings of the 20th International Database Engineering & Applications Symposium (IDEAS 2016), 11-13 Jul 2016, Montreal, Canada. pp. 115-124. ACM. ISBN 978-1-4503-4118-9

2015

de Graaff, V. and Pfoser, D. and van Keulen, M. and de By, R.A. (2015) Spatiotemporal Behavior Profiling: A Treasure Hunt Case Study. In: Proceedings of Web and Wireless Geographical Information Systems, W2GIS 2015, 21-22 May 2015, Grenoble, France. pp. 143-158. Lecture Notes in Computer Science 9080. Springer. ISBN 978-3-319-18250-6
de Graaff, V. and van de Venis, A. and van Keulen, M. and de By, R.A. (2015) Generic knowledge-based analysis of social media for recommendations. In: Proceedings of the 2nd Workshop on New Trends in Content-Based Recommender Systems (CBRecSys 2015), 20 Sep 2015, Vienna, Austria. ACM.
Habib, M.B. and van Keulen, M. (2015) NEED4Tweet: A Twitterbot for Tweets Named Entity Extraction and Disambiguation. In: Proceedings of the System Demonstrations of The 53rd Annual Meeting of the Association for Computational Linguistics (ACL 2015), 26-31 July 2015, Beijing, China. The Association for Computer Linguistics.
Habib, M.B. and Wanders, B. and Flokstra, Jan and van Keulen, M. (2015) Incremental data uncertainty handling using evidence combination: a case study on maritime data reasoning. In: Proceedings of the 5th DEXA Workshop on Information Systems for Situation Awareness and Situation Management (ISSASiM 2015), 1-4 Sep 2015, Valencia, Spain. pp. 147-151. IEEE Computer Society. ISBN 978-1-4673-7581-8
van Keulen, M. (2015) Dealing with poor data quality of OSINT data in fraud risk analysis. (Invited) In: SIKS workshop Smart Auditing, 25 Feb 2015, Tilburg, The Netherlands. Tilburg University. ISBN not assigned
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2015) Harvesting All Matching Information To A Given Query From a Deep Website. In: Proceedings of the 1st International Workshop on Knowledge Discovery on the Web, KDWEB 2015, 3-5 Sep 2015, Cagliari, Italy. pp. 1-7. CEUR Workshop Proceedings 1489. CEUR-WS.org. ISSN 1613-0073
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2015) Towards Complete Coverage in Focused Web Harvesting. In: Proceedings of the 17th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2015), 11-13 Dec 2015, Brussels, Belgium. 65. ACM. ISBN 978-1-4503-3491-4
Muller, D. and Elsinga, J. and van Keulen, M. (2015) Stairwalker User Manual. Technical Report TR-CTIT-15-09, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
Verburg, J. and Habib, M.B. and van Keulen, M. (2015) Handling uncertainty in relation extraction: a case study on tennis tournament results extraction from tweets. In: Proceedings of the 8th International Conference on Knowledge Capture (K-CAP 2015), 7-10 October 2015, New York, USA. Article No. 26. ACM. ISBN 978-1-4503-3849-3
Wanders, B. and van Keulen, M. (2015) Revisiting the formal foundation of Probabilistic Databases. In: Proceedings of the 2015 Conference of the International Fuzzy Systems Association and the European Society for Fuzzy Logic and Technology, IFSA-EUSFLAT 2015, 30 June - 3 july 2015, Gijón, Spain. 47. Advances in Intelligent Systems Research 89. Atlantis Press. ISSN 1951-6851 ISBN 978-94-62520-77-6
Wanders, B. and van Keulen, M. and van der Vet, P.E. (2015) Uncertain Groupings: Probabilistic combination of grouping data. In: Proceedings of the 26th International Conference on Database and Expert Systems Applications, DEXA 2015, 01-04 Sep 2015, Valencia, Spain. pp. 236-250. Lecture Notes in Computer Science 9261. Springer International Publishing. ISSN 0302-9743 ISBN 978-3-319-22848-8
Wevers, L. and Hofstra, M. and Tammens, M. and Huisman, M. and van Keulen, M. (2015) A Benchmark for Online Non-Blocking Schema Transformations. In: Proceedings of 4th International Conference on Data Management Technologies and Applications, DATA 2015, 20-22 Jul 2015, Colmar, France. pp. 288-298. SciTePress. ISBN 978-989-758-103-8
Wevers, L. and Hofstra, M. and Tammens, M. and Huisman, M. and van Keulen, M. (2015) Analysis of the blocking behaviour of schema transformations in relational database systems. In: Proceedings of the 19th East European Conference on Advances in Databases and Information Systems, ADBIS 2015, 8-11 Sep 2015, Poitiers, France. pp. 169-183. Lecture Notes in Computer Science 9282. Springer Verlag. ISSN 0302-9743 ISBN 978-3-319-23134-1

2014

Been, H. and van Keulen, M. (2014) Finding You on the Internet: an approach for finding on-line presences of people for fraud risk analysis. In: 16th International Conference on Enterprise Information Systems (ICEIS 2014), 27-30 Apr 2014, Lisbon, Portugal. pp. 697-706. SciTePress. ISBN 978-989-758-027-7
Berrada, G. and van Keulen, M. and Habib, M.B. (2014) Hadoop for EEG Storage and Processing: A Feasibility Study. In: Proceedings of the International Conference on Brain Informatics and Health, BIH 2014, August 11-14, 2014, Warsaw, Poland. pp. 218-230. Lecture Notes in Computer Science 8609. Springer Verlag. ISSN 0302-9743 ISBN 978-3-319-09890-6
Habib, M.B. and van Keulen, M. (2014) Information Extraction for Social Media. In: Proceedings of the Third Workshop on Semantic Web and Information Extraction (SWAIE 2014), 24th August 2014, Dublin, Ireland. pp. 9-16. Association for Computational Linguistics. ISBN 978-1-873769-48-5
Habib, M.B. and van Keulen, M. and Zhu, Zhemin (2014) Named Entity Extraction and Linking Challenge: University of Twente at #Microposts2014. In: Proceedings of the the 4th Workshop on Making Sense of Microposts co-located with the 23rd International World Wide Web Conference (WWW 2014), 07 Apr 2014, Seoul, South Korea. pp. 64-65. CEUR Workshop Proceedings Vol-1141. CEUR-WS.org. ISSN 1613-0073
van Keulen, M. and Habib, M.B. (2014) Uncertainty Handling in Named Entity Extraction and Disambiguation for Informal Text. In: Uncertainty Reasoning for the Semantic Web III. Lecture Notes in Computer Science 8816. Springer Verlag, Berlin, pp. 309-328. ISSN 0302-9743 ISBN 978-3-319-13412-3
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2014) Designing A General Deep Web Harvester by Harvestability Factor. In: Proceedings of the international ISWC workshop on Surfacing the Deep and the Social Web, SDSW 2014, 19-23 Oct 2014, Riva Del Garda, Italy. 4. CEUR Workshop Proceedings 1310. CEUR Workshop Proceedings. ISSN 1613-0073
Khelghati, S.M. and van Keulen, M. and Hiemstra, D. (2014) Designing A General Deep Web Access Approach Based On A Newly Introduced Factor; Harvestability Factor (HF). Technical Report TR-CTIT-14-08, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
Wanders, B. and van Keulen, M. and van der Vet, P.E. (2014) Uncertain groupings: probabilistic combination of grouping data. Technical Report TR-CTIT-14-12, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
Wevers, L. and Hofstra, M and Tammens, M and Huisman, M. and van Keulen, M. (2014) Towards Online Relational Schema Transformations. In: Dutch-Belgian Database Day 2014, 17 Oct 2014, Antwerp, Belgium. 1. Dutch-Belgian Database Day. ISBN not assigned
Wevers, L. and Hofstra, M. and Tammens, M. and Huisman, M. and van Keulen, M. (2014) Towards Online and Transactional Relational Schema Transformations. Technical Report TR-CTIT-14-10, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625

2013

de Graaff, V. and de By, R.A. and van Keulen, M. and Flokstra, Jan (2013) Point of interest to region of interest conversion. In: Proceedings of the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS 2013), 05-08 Nov 2013, Orlando, FL, USA. pp. 388-391. ACM. ISBN 978-1-4503-2521-9
Habib, M.B. and van Keulen, M. (2013) A hybrid approach for robust multilingual toponym extraction and disambiguation. In: Proceedings of the International Conference on Language Processing and Intelligent Information Systems (LP&IIS 2013), 17-18 June 2013, Warsaw, Poland. pp. 1-15. Lecture Notes in Computer Science 7912. Springer Verlag. ISBN 978-3-642-38633-6
Habib, M.B. and van Keulen, M. (2013) A generic open world named entity disambiguation approach for tweets. In: Proceedings of the 5th International Conference on Knowledge Discovery and Information Retrieval, KDIR 2013, 19-22 September 2013, Vilamoura, Portugal. SciTePress. ISBN not assigned
Habib, M.B. and van Keulen, M. (2013) Named entity extraction and disambiguation: the missing link. In: Proceedings of the Sixth International Workshop on Exploiting Semantic Annotations in Information Retrieval, ESAIR 2013, 28 Oct 2013, San Francisco, USA. pp. 37-40. ACM. ISBN 978-1-4503-2413-7
Habib, M.B. and van Keulen, M. (2013) Toponym Extraction and Disambiguation Enhancement Using Loops of Feedback. In: Knowledge Discovery, Knowledge Engineering and Knowledge Management: 4th International Joint Conference, IC3K 2012, Barcelona, Spain, October 4-7, 2012, Revised Selected Papers. Communications in Computer and Information Science 415. Springer Verlag, Berlin Heidelberg, pp. 113-129. ISSN 1865-0929 ISBN 978-3-642-54104-9
Habib, M.B. and van Keulen, M. and Zhu, Zhemin (2013) Concept Extraction Challenge: University of Twente at #MSM2013. In: Proceedings of the Concept Extraction Challenge at the Workshop on 'Making Sense of Microposts', 13 May 2013, Rio de Janeiro, Brazil. pp. 17-20. CEUR Workshop Proceedings 1019. CEUR. ISSN 1613-0073
Henseler, H. and Hofsté, J. and van Keulen, M. (2013) Digital-forensics based pattern recognition for discovering identities in electronic evidence. In: Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2013), 12-14 Aug 2013, Uppsala, Sweden. pp. 112-116. IEEE Computer Society. ISBN 978-0-7695-5062-6
Hofste, J. and Henseler, H. and van Keulen, M. (2013) Computer assisted extraction, merging and correlation of identities with Tracks Inspector. In: Proceedings of the International Conference on Artificial Intelligence and Law (ICAIL 2013), 10-14 June 2013, Rome, Italy. pp. 247-248. ACM. ISBN 978-1-4503-2080-1
Jundt, O. and van Keulen, M. (2013) Sample-based XPath Ranking for Web Information Extraction. In: Proceedings of the 8th Conference of the European Society for Fuzzy Logic and Technology (EUSFLAT 2013), 11-13 Sep 2013, Milano, Italy. 39. Advances in Intelligent Systems Research 32. Atlantis Press. ISSN 1951-6851 ISBN 978-90786-77-78-9
van Keulen, M. and de Graaff, V. and Zhu, Zhemin and de By, R.A. and Wombacher, A. and Flokstra, Jan (2013) //Rondje Zilverling: COMMIT/TimeTrails. I/O Vivat, 28 (4). pp. 16-17. ISSN 1389-0468
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2013) How much data resides in a web collection: how to estimate size of a web collection. In: Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, DIR 2013, 26 April 2013, Delft, Netherlands. pp. 42-43. CEUR Workshop Proceedings 986. CEUR. ISSN 1613-0073
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2013) Deep Web Entity Monitoring. In: Proceedings of the 22nd international conference on World Wide Web companion, WWW 2013, 13-17 May 2013, Rio de Janeiro, Brazil. pp. 377-382. International World Wide Web Conferences Steering Committee. ISBN 978-1-4503-2038-2
Kuperus, J. and Veenman, C. and van Keulen, M. (2013) Increasing NER recall with minimal precision loss. In: Proceedings of the European Intelligence and Security Informatics Conference (EISIC 2013), 12-14 Aug 2013, Uppsala, Sweden. pp. 106-111. IEEE Computer Society. ISBN 978-0-7695-5062-6
Panse, F. and van Keulen, M. and Ritter, N. (2013) Indeterministic Handling of Uncertain Decisions in Deduplication. Journal of Data and Information Quality, 4 (2). 9. ISSN 1936-1955
van der Spoel, S. and van Keulen, M. and Amrit, C. (2013) Process prediction in noisy data sets: a case study in a Dutch hospital. In: Proceedings of the Second IFIP WG 2.6, 2.12 International Symposium on Data-Driven Process Discovery and Analysis, SIMPDA 2012, Revised Selected Papers, 18-20 Jun 2012, Campione d’Italia, Italy. pp. 60-83. Lecture Notes in Business Information Processing 162. Springer Verlag. ISSN 1865-1348 ISBN 978-3-642-40918-9
van Wynsberghe, A.L. and Been, H. and van Keulen, M. (2013) To use or not to use: guidelines for researchers using data from online social networking sites. In: Responsible Research and Innovation Observatory. RRI, Rict Responsible Innovation, UK, 1471. ISBN not assigned

2012

de Graaff, V. and van Keulen, M. and de By, R.A. (2012) Towards Geosocial Recommender Systems. In: 4th International Workshop on Web Intelligence & Communities (WI&C 2012), 16 Apr 2012, Lyon, France. 8:1-8:4. ACM. ISBN 978-1-4503-1189-2
de Graaff, V. and van Keulen, M. and de By, R.A. (2012) Semantic Enrichment of GPS Trajectories. In: Dutch-Belgian Database Day (DBDBD 2012), 21 Nov 2012, Brussels, Belgium. University of Brussels. ISBN not assigned
Habib, M.B. and van Keulen, M. (2012) Improving Toponym Extraction and Disambiguation Using Feedback Loop. In: Proceedings of the 12th International Conference on Web Engineering (ICWE 2012), 23-27 Jul 2012, Berlin, Germany. pp. 439-443. Lecture Notes in Computer Science . Springer Verlag. ISBN 978-3-642-31753-8
Habib, M.B. and van Keulen, M. (2012) Improving Toponym Disambiguation by Iteratively Enhancing Certainty of Extraction. In: Proceedings of the 4th International Conference on Knowledge Discovery and Information Retrieval, KDIR 2012, 4-7 Oct 2012, Barcelona, Spain. pp. 399-410. SciTePress. ISBN 978-989-8565-29-7
Habib, M.B. and van Keulen, M. (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 Oct 2012, Galway, Ireland. pp. 1-10. CEUR Workshop Proceedings 925. CEUR-WS.org. ISSN 1613-0073
van Keulen, M. (2012) Managing Uncertainty: The Road Towards Better Data Interoperability. IT - Information Technology, 54 (3). pp. 138-146. ISSN 1611-2776
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2012) Size Estimation of Non-Cooperative Data Collections. In: Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services (iiWAS2012), 3-5 December 2012, Bali, Indonesia. pp. 239-246. ACM. ISBN 978-1-4503-1306-3
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2012) Size estimation of non-cooperative data collections. In: The Dutch-Belgian Database Day 2012, 21 Nov 2012, Brussels, Belgium. 6. Université Libre de Bruxelles. ISBN not assigned
Khelghati, S.M. and Hiemstra, D. and van Keulen, M. (2012) Deep web entity monitoring. Technical Report TR-CTIT-13-02, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625

2011

Boerman, T.W. and van Keulen, M. and van der Vet, P.E. and Severing, E.I. (2011) Integration of Biological Sources: Exploring the Case of Protein Homology. Technical Report TR-CTIT-11-18, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Habib, M.B. and van Keulen, M. (2011) Information Extraction, Data Integration, and Uncertain Data Management: The State of The Art. Technical Report TR-CTIT-11-06, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Habib, M.B. and van Keulen, M. (2011) Neogeography: The Challenge of Channelling Large and Ill-Behaved Data Streams. Technical Report TR-CTIT-11-08, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Habib, M.B. and van Keulen, M. (2011) Named Entity Extraction and Disambiguation: The Reinforcement Effect. In: Proceedings of the 5th International Workshop on Management of Uncertain Data, MUD 2011, 29 Aug 2011, Seatle, USA. pp. 9-16. CTIT Workshop Proceedings Series WP11-02. Centre for Telematics and Information Technology University of Twente. ISSN 0929-0672
Habib, M.B. and van Keulen, M. (2011) Improving Named Entity Disambiguation by Iteratively Enhancing Certainty of Extraction. Technical Report TR-CTIT-11-29, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Habib, M.B. and van Keulen, M. (2011) Named Entity Extraction and Disambiguation from an Uncertainty Perspective. In: Proceedings of the Dutch Belgian Database Day, DBDBD 2011, 2 Dec 2011, University of Twente, The Netherlands. 12. Centre for Telematics and Information Technology, University of Twente . ISBN not assigned
de Keijzer, A. and van Keulen, M. (2011) Preface. In: The Fifth International VLDB Workshop on Management of Uncertain Data (MUD). CTIT Workshop Proceedings (WP11-02). Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands, v-v. ISSN 0929-0672
van Keulen, M. and Habib, M.B. (2011) Handling uncertainty in information extraction. In: of the 7th International Workshop on Uncertainty Reasoning for the Semantic Web (URSW 2011), 23 Oct 2011, Bonn, Germany. pp. 109-112. CEUR Workshop Proceedings 778. CEUR-WS.org. ISSN 1613-0073

2010

Abdel Kader, R. and Boncz, P.A. and Manegold, S. and van Keulen, M. (2010) ROX: The Robustness of a Run-time XQuery Optimizer Against Correlated Data. In: Proceedings of the 26th International Conference on Data Engineering (ICDE2010), 1-6 Mar 2010, Long Beach, California, USA. pp. 1185-1188. IEEE Computer Society. ISBN 978-1-4244-5444-0
Abdel Kader, R. and van Keulen, M. and Boncz, P.A. and Manegold, S. (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. 15.1-15.12. CEUR Workshop Proceedings 619. CEUR-WS.org. ISSN 1613-0073
Hollander, E.S. and van Keulen, M. (2010) Storing and Querying Probabilistic XML Using a Probabilistic Relational DBMS. In: Proceedings of the 4th International Workshop on Management of Uncertain Data (MUD 2010), 13 Sep 2010, Singapore. pp. 35-49. CTIT Workshop Proceedings Series WP10-04. Centre for Telematics and Information Technology University of Twente. ISSN 0929-0672
van Keulen, M. (2010) Onzekere databases. DB/M: database magazine, 21 (4). pp. 22-27. ISSN 0925-6911
Panse, F. and van Keulen, M. and de Keijzer, A. and Ritter, N. (2010) Duplicate Detection in Probabilistic Data. In: Proceedings of the 2nd International Workshop on New Trends in Information Integration (NTII 2010), 5-6 Mar 2010, Long Beach, California, USA. pp. 179-182. IEEE Computer Society. ISBN 978-1-4244-6522-4
Panse, F. and van Keulen, M. and Ritter, N. (2010) Indeterministic Handling of Uncertain Decisions in Duplicate Detection. Technical Report TR-CTIT-10-21, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2009

Abdel Kader, R. and Boncz, P.A. and Manegold, S. and van Keulen, M. (2009) ROX: Run-Time Optimization of XQueries. In: Proceedings of the 35th ACM SIGMOD International Conference on Management of Data (SIGMOD2009), 29 June - 02 July 2009, Providence, Rhode Island, USA. pp. 615-626. ACM. ISBN 978-1-60558-551-2
de Keijzer, A. and van Keulen, M. (2009) Preface. In: Proceedings of the Third International Workshop on Management of Uncertain Data (MUD2009), 28 Aug 2008, Lyon, France. 3. CTIT Workshop Proceedings Series (WP-CTIT-09-14). Centre for Telematics and Information Technology University of Twente. ISSN 1574-0846
van Keulen, M. (2009) Probabilistic Data Integration. (Invited) In: 08421 Abstracts Collection - Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany. pp. 8-8. Dagstuhl Seminar Proceedings (08421). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. ISSN 1862-4405
van Keulen, M. (2009) IMPrECISE: Good-is-good-enough Data Integration. In: 08421 Abstracts Collection - Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany. pp. 24-25. Dagstuhl Seminar Proceedings (08421). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. ISSN 1862-4405
van Keulen, M. and de Keijzer, A. (2009) Qualitative Effects of Knowledge Rules and User Feedback in Probabilistic Data Integration. The VLDB Journal, 18 (5). pp. 1191-1217. ISSN 1066-8888 *** ISI Impact 1,744 ***
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. Dagstuhl Seminar Proceedings (08421). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. ISSN 1862-4405
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. Dagstuhl Seminar Proceedings (08421). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. ISSN 1862-4405
Panse, F. and van Keulen, M. and de Keijzer, A. and Ritter, N. (2009) Duplicate Detection in Probabilistic Data. Technical Report TR-CTIT-09-44, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Spiliopoulou, M. and van Keulen, 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: Proceedings of Dagstuhl Seminar 08421 on Uncertainty Management in Information Systems, 12 - 17 Oct 2008, Dagstuhl, Germany. Dagstuhl Seminar Proceedings (08421). Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik. ISSN 1862-4405
Veldman, I. and de Keijzer, A. and van Keulen, M. (2009) Compression of Probabilistic XML documents. In: Proceedings of the 3rd International Conference on Scalable Uncertainty Management (SUM2009), 28-30 Sep 2009, Washington, DC, USA. pp. 255-267. Lecture Notes in Computer Science 5785. Springer Verlag. ISSN 0302-9743 ISBN 978-3-642-04387-1

2008

de Keijzer, A. and van Keulen, M. (2008) IMPrECISE: Good-is-good-enough data integration. In: Proceedings of the 24th International Conference on Data Engineering (ICDE2008), 7-12 April 2008, Cancun, Mexico. pp. 1548-1551. IEEE Computer Society. ISBN 978-1-4244-1837-4
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. i. CTIT Workshop Proceedings Series (WP-CTIT-08-02). Centre for Telematics and Information Technology University of Twente. ISSN 1574-0846
van Keulen, M. and de Keijzer, A. (2008) Qualitative Effects of Knowledge Rules in Probabilistic Data Integration. Technical Report TR-CTIT-08-42, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Nunes Leal Franqueira, V. and van Keulen, M. (2008) Analysis of the NIST database towards the composition of vulnerabilities in attack scenarios. Technical Report TR-CTIT-08-08, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2007

Abdel Kader, R. and van Keulen, M. (2007) Overview of query optimization in XML database systems. Technical Report TR-CTIT-07-39, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Blanken, H.M. and Feng, Ling and van Keulen, M. and Blok, H.E. (2007) Introduction. In: Multimedia Retrieval. Data-Centric Systems and Applications. Springer Verlag, Berlin, pp. 1-22. ISBN 978-3-540-72894-8
Boncz, P.A. and Grust, T. and Siméon, J. and van Keulen, M. (2007) 06472 Abstracts Collection - XQuery Implementation Paradigms. In: XQuery Implementation Paradigms, 19-22 Nov 2006, Dagstuhl, Germany. Dagstuhl Seminar Proceedings (06472). Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI). ISSN 1862-4405
Boncz, P.A. and Grust, T. and Siméon, J. and van Keulen, M. (2007) 06472 Executive Summary - XQuery Implementation Paradigms. In: XQuery Implementation Paradigms, 19-22 Nov 2006, Dagstuhl, Germany. Dagstuhl Seminar Proceedings (06472). Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI). ISSN 1862-4405
de Keijzer, A. and van Keulen, M. (2007) User Feedback in Probabilistic XML. Technical Report TR-CTIT-07-25, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
de Keijzer, A. and van Keulen, M. (2007) User Feedback in Probabilistic Integration. In: Second International Workshop on Flexible Database and Information System Technology (FlexDBIST 2007), 4 Sept 2007, Regensburg, Germany. pp. 377-381. IEEE Computer Society. ISBN 0-7695-2932-1
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. pp. 104-115. Lecture Notes in Computer Science 4772. Springer Verlag. ISBN 978-3-540-75407-7
de Keijzer, A. and van Keulen, M. and Dekhtyar, A. (2007) Report on the First VLDB Workshop on Management of Uncertain Data (MUD 2007). ACM SIGMOD record, 36 (4). pp. 57-58. ISSN 0163-5808 *** ISI Impact 0,698 ***
de Keijzer, A. and van Keulen, M. and Dekhtyar, A. (2007) Preface. In: Proceedings of the first international VLDB workshop on Management of Uncertain Data. Proceedings Workshop Series (WP-CTIT-07-08). Centre for Telematics and Information Technology University of Twente, Enschede, iii. ISSN 1574-0846
van Keulen, M. (2007) Procesautomatisering. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapter III.2.1). Reed Business Information, Den Haag, pp. 212-222. ISBN 978-90-6228-671-3
van Keulen, M. (2007) Gegevensbanken. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapter VI.4). Reed Business Information, Den Haag, pp. 852-881. ISBN 978-90-6228-671-3
van Keulen, M. and Sikkel, K. (2007) Computerondersteuning voor groepscommunicatie en samenwerken. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapter III.12). Reed Business Information, Den Haag, pp. 341-350. ISBN 978-90-6228-671-3
Schoute, A.L. and van Keulen, M. (2007) Operating Systems. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapter VI.1.7). Reed Business Information, Den Haag, pp. 761-770. ISBN 978-90-6228-671-3
Siebes, A.P.J.M. and van Keulen, M. (2007) Data warehousing en data mining. In: ICT-Zakboek. PBNA Polyzakboekjes (Chapter III.11). Reed Business Information, Den Haag, pp. 332-341. ISBN 978-90-6228-671-3

2006

Boncz, P.A. and Flokstra, Jan and Grust, T. and van Keulen, M. and Manegold, S. and Mullender, K.S. and Rittinger, J. and Teubner, J. (2006) MonetDB/XQuery - Consistent & Efficient Updates on the Pre/Post Plane. In: Proceedings of the 10th International Conference on Extending Database Technology (EDBT 2006), 26-31 Mar 2006, Munich, Germany. pp. 1190-1193. Lecture Notes in Computer Science 3896. Springer. ISSN 0302-9743 ISBN 978-3-540-32960-2
Boncz, P.A. 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. pp. 479-490. ACM Press. ISBN 1-59593-434-0
de Keijzer, A. and van Keulen, M. and Li, Yiping (2006) Taming Data Explosion in Probabilistic Information Integration. Technical Report TR-CTIT-06-05, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
de Keijzer, A. and van Keulen, M. and Li, Yiping (2006) Taming Data Explosion in Probabilistic Information Integration. In: Pre-Proceedings of the International Workshop on Inconsistency and Incompleteness in Databases (IIDB 2006), 26 Mar 2006, Munich, Germany. pp. 82-86. University of Mons-Hainaut, Belgium. ISBN not assigned
Smiljanic, M. and van Keulen, M. and Jonker, W. (2006) Using Element Clustering to Increase the Efficiency of XML Schema Matching. In: Proceedings of the 22nd International Conference on Data Engineering Workshops (ICDEW 2006), 3 Apr 2006, Atlanta, Georgia. 45. IEEE Computer Society. ISBN 0-7695-2571-7
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. 83. IEEE Computer Society. ISBN 0-7695-2571-7

2005

Boncz, P.A. and Grust, T. and van Keulen, M. and Manegold, S. and Rittinger, J. and Teubner, J. (2005) Pathfinder: XQuery - The Relational Way. In: Proceedings of the 31st International Conference on Very Large Databases (VLDB 2005), 30 Aug-2 Sep 2005, Trondheim, Norway. pp. 1322-1325. ACM Press. ISBN 1-59593-154-6
de Keijzer, A. and van Keulen, M. (2005) Information Integration; The process of integration, evolution and versioning. Technical Report TR-CTIT-05-58, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
de Keijzer, A. and van Keulen, M. (2005) Rule-based Information Integration. Technical Report TR-CTIT-05-59, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
van Keulen, M. and de Keijzer, A. and Alink, W. (2005) A probabilistic XML approach to data integration. In: Proceedings of the 21st International Conference on Data Engineering (ICDE'05), 5-8 April 2005, Tokyo, Japan. pp. 459-470. IEEE Conference Proceedings. IEEE Computer Society. ISSN 1084-4627 ISBN 0-7695-2285-8
Smiljanic, M. and van Keulen, M. and Jonker, W. (2005) Formalizing the XML Schema Matching Problem as a Constraint Optimization Problem. In: Proceedings of the 16th International Conference on Database and Expert Systems Applications (DEXA2005), 22-26 Aug 2005, Copenhagen, Denmark. pp. 333-342. Lecture Notes in Computer Science 3588. Springer. ISSN 0302-9743 ISBN 978-3-540-28566-3

2004

Grust, T. and van Keulen, M. and Teubner, J. (2004) Accelerating XPath Evaluation in Any RDBMS. Transactions on Database Systems (TODS), 29 (1). pp. 91-131. ISSN 0362-5915 *** ISI Impact 0,633 ***
de Keijzer, A. and van Keulen, M. (2004) A possible world approach to uncertain relational data. In: International Workshop on Supporting Imprecision and Uncertainty in Flexible Databases (SIUFDB 2004), 3 Sep 2004, Zaragoza, Spain. pp. 922-926. DEXA Workshops. IEEE Computer Society. ISBN 0-7695-2195-9
de Keijzer, A. and van Keulen, M. (2004) A Probabilistic Database Extension. Technical Report TR-CTIT-04-21, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
van Keulen, M. (2004) Relational Approach to Logical Query Optimization of XPath. In: Proceedings of the 1st Twente Data Management Workshop (TDM'04) on XML Databases and Information Retrieval, 21 Jun 2004, Enschede, The Netherlands. pp. 57-63. CTIT Workshop Series WP 04-01. Centre for Telematics and Information Technology University of Twente. ISSN 1574-0846
Mayer, S. and Grust, T. and van Keulen, M. and Teubner, J. (2004) An Injection with Tree Awareness: Adding Staircase Join to PostgreSQL. In: Proceedings of the 30th International Conference on Very Large Data Bases (VLDB 2004), 31 Aug - 3 Sep 2004, Toronto, Canada. pp. 1305-1308. Morgan Kaufmann Publishers. ISBN 0120884690
van Rein, H. and van Keulen, M. (2004) Zoeken in XML: van XPath naar SQL. DB/M: Database Magazine (6). pp. 45-49. ISSN 0925-6911
van Ruth, J. and Fokkinga, M.M. and van Keulen, M. (2004) The Dodo Query Flattening System. Technical Report TR-CTIT-04-41, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
Smiljanic, M. and van Keulen, M. and Jonker, W. (2004) Defining the XML Schema Matching Problem. Technical Report TR-CTIT-04-17, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625

2003

Grust, T. and van Keulen, M. (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 978-3-540-40768-3
Grust, T. and van Keulen, M. and Teubner, J. (2003) Staircase Join: Teach a Relational DBMS to Watch its (Axis) Steps. In: Proceedings of the 29th International Conference on Very Large Databases (VLDB2003), 9-12 Sep 2003, Berlin, Germany. pp. 524-535. Morgan Kaufmann Publishers. ISBN 0-12-722442-4
Hiemstra, D. and de Vries, A.P. and Blok, H.E. and van Keulen, M. and Jonker, W. and Kersten, M.L. (2003) CIRQUID: Complex Information Retrieval QUeries In a Database. Technical Report TR-CTIT-03-26, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
van Keulen, M. and Vonk, J. and de Vries, A.P. and Flokstra, Jan and Blok, H.E. (2003) Moa and the multi-model architecture: a new perspective on NF2 In: Proceedings of the 14th International Conference on Database and Expert Systems Applications (DEXA2003), 1-5 Sep 2003, Prague, Czech Republic. pp. 67-76. Lecture Notes in Computer Science 2736. Springer-Verlag. ISSN 0302-9743 ISBN 978-3-540-40806-2
Teubner, J. and Grust, T. and van Keulen, M. (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. pp. 85-89. Fakultät für Informatik, Universität Magdeburg. ISBN not assigned
Zivkovic, Z. and Petkovic, M. and van Keulen, M. and van der Heijden, F. and Jonker, W. and Rijnierse, E. (2003) Two Video Analysis Applications Using Foreground/Background Segmentation. In: Proceedings of the VIE2003 Conference on Visual Information Engineering, 7-9 Jul 2003, Surrey, Guildford, UK. pp. 310-313. IEEE Conference Proceedings 495. IEEE Computer Society. ISSN 0537-9989 ISBN 0-85296-757-8

2002

van Keulen, M. (2002) De hamer of de moker: welke databasesoftware te kiezen. Linux news, 3 (1). pp. 14-21. ISSN 1567-6676
van Keulen, M. and Vonk, J. and de Vries, A.P. and Flokstra, Jan and Blok, H.E. (2002) Moa: extensibility and efficiency in querying nested data. Technical Report TR-CTIT-02-19, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625
Smiljanic, M. and Blanken, H.M. and van Keulen, M. and Jonker, W. (2002) Distributed XML Database Systems. Technical Report TR-CTIT-02-46, Centre for Telematics and Information Technology University of Twente, Enschede, The Netherlands. ISSN 1381-3625

2001

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

1998

van Keulen, M. (1998) Object-Oriented Programming: A Unified Foundation - Guiseppe Castagna. L'Objet, 4 (1). pp. 108-110. ISSN 1262-1137
van Keulen, M. and Brand, H.W. (1998) Trends in tools voor gegevensmodellering. Informatie, 40. pp. 8-12. ISSN 0019-9907

1997

van Keulen, M. (1997) Formal Operation Definition in Object-Oriented Databases. PhD thesis, University of Twente. CTIT Ph.D.-thesis series No. 97-16 ISBN 90-3651-031-7

1996

Capobianchi, R. and Mautref, M. and van Keulen, M. and Balsters, H. (1996) An architecture and methodology for the design and development of Technical Information Systems. In: Proceedings of the 9th International Symposium on Methodologies for Intelligent Systems (ISMIS), 9-13 Jun 1996, Zakopane, Poland. pp. 511-520. Lecture Notes in Computer Science 1079. Springer-Verlag. ISSN 0302-9743 ISBN 978-3-540-61286-5

1995

van Keulen, M. and Skowronek, J. and Apers, P.M.G. and Balsters, H. and Blanken, H.M. and de By, R.A. and Flokstra, Jan (1995) A Framework for Representation, Validation and Implementation of Database Application Semantics. INF Memorandum INF 95-37, University of Twente, Enschede, The Netherlands. ISSN 0924-3755
van Keulen, M. and Skowronek, J. and Apers, P.M.G. and Balsters, H. and Blanken, H.M. and de By, R.A. and Flokstra, Jan (1995) Design and Validation of Reliable Complex Computer Systems. INF Memorandum INF 95-38, University of Twente, Enschede, The Netherlands. ISSN 0924-3755
van Keulen, M. and Skowronek, J. and Apers, P.M.G. and Balsters, H. and Blanken, H.M. and de By, R.A. and Flokstra, Jan (1995) A Framework for Representation, Validation and Implementation of Databases Application Semantics. In: Proceedings of the IFIP WG 2.6 Working Conference on Database Applications Semantics (DS-6), May 30 - June 2, 1995, Stone Mountain, Atlanta, Georgia, USA. pp. 526-546. IFIP Advances in Information and Communication Technology. Springer Verlag. ISSN 1868-4238 ISBN 978-1-5041-2946-6

1994

Flokstra, Jan and van Keulen, M. and Skowronek, J. (1994) The IMPRESS DDT: a database design toolbox based on a formal specification language. In: Proceedings of the 1994 ACM SIGMOD international conference on Management of data (SIGMOD 1994), 24-27 May 1994, Minneapolis, Minnesota, USA. pp. 506-506. ACM Press. ISSN 0163-5808

1992

van Keulen, M. (1992) Struggle for LIFE: A Rapid prototype for TM in LIFE. Master's thesis, University of Twente.