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Author: Apers, P.M.G.
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2014

Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. (2014) Linear Co-occurrence Rate Networks (L-CRNs) for Sequence Labeling. In: Proceedings of the Second International Conference on Statistical Language and Speech Processing, SLSP 2014, 14-16 Oct 2014, Grenoble, France. pp. 185-196. Lecture Notes in Artifical Intelligence 8791. Springer Verlag. ISSN 0302-9743 ISBN 978-3-319-11396-8
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2014) Comparison Of Local And Global Undirected Graphical Models. In: Proceedings of the 22nd European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning (ESANN 2014), 23-25 April 2014, Bruges, Belgium. pp. 479-484. Ciaco-i6doc.com. ISBN 978-2-87419-095-7

2013

Amiguet, J. and Apers, P.M.G. and Wombacher, A. (2013) Operation properties: a representation and their role in the propagation of meta-data. In: Proceedings of the 9th IEEE International Conference on eScience (eScience 2013), 22-25 Oct 2013, Beijing, China. pp. 172-179. IEEE Computer Society. ISBN 978-0-7695-5083-1
Huq, M.R. and Apers, P.M.G. and Wombacher, A. (2013) ProvenanceCurious: a tool to infer data provenance from scripts. In: Proceedings of the 16th International Conference on Extending Database Technology (EDBT 2013), 18-22 Mar 2013, Genoa, Italy. pp. 765-768. ACM. ISBN 978-1-4503-1597-5
Huq, M.R. and Apers, P.M.G. and Wombacher, A. (2013) An Inference-Based Framework to Manage Data Provenance in Geoscience Applications. IEEE Transactions on Geoscience and Remote Sensing, 51 (11). pp. 5113-5130. ISSN 0196-2892 *** ISI Impact 3,360 ***
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) Closed form maximum likelihood estimator of conditional random fields. Technical Report TR-CTIT-13-03, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) UT-DB: an experimental study on sentiment analysis in twitter. In: Proceedings of the Seventh International Workshop on Semantic Evaluation, SemEval 2013, 14-15 June 2013, Atlanta, GA, USA. pp. 384-389. Association for Computational Linguistics. ISBN not assigned
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) Separate training for conditional random fields using co-occurrence rate factorization. In: Proceedings of the 23rd Meeting of Computational Linguistics in the Netherlands, CLIN 2013, 18 January 2013, Enschede, the Netherlands. pp. 96-96. University of Twente. ISBN not assigned
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) Empirical training for conditional random fields. In: Proceedings of the 22nd Belgian-Dutch Conference on Machine Learning, BENELEARN 2013, 3 June 2013, Nijmegen, the Netherlands. pp. 105-105. Radboud University Nijmegen. ISBN not assigned
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) Empirical co-occurrence rate networks for sequence labeling. In: Proceedings of the 12th International Conference on Machine Learning and Applications, ICMLA 2013, 04-07 Dec 2013, Miami Beach, FL, USA. pp. 93-98. IEEE Computer Society. ISBN 978-0-7695-5144-9
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2013) Empirical co-occurrence rate networks for sequence labeling. In: Dutch-Belgian Database Day, DBDBD 2013, 29 Nov 2013, Rotterdam, The Netherlands. 10. Erasmus University Rotterdam. ISBN not assigned

2012

Aly, R.B.N. and Hiemstra, D. and de Jong, F.M.G. and Apers, P.M.G. (2012) Simulating the Future of Concept-Based Video Retrieval under Improved Detector Performance. Multimedia Tools and Applications, 60 (1). pp. 203-231. ISSN 1380-7501 *** ISI Impact 1,331 ***
Amiguet, J. and Apers, P.M.G. and Wombacher, A. (2012) The identification problem: a description. In: International Workshop on Scientific and Engineering Workflows, SWF 2012, 24 Jun 2012, Honolulu, Hawaii. pp. 33-40. IEEE Computer Society. ISBN 978-1-4673-3053-4
Huq, M.R. and Apers, P.M.G. and Wada, Y. and van Beek, L.P.H. and Wombacher, A. (2012) From Scripts Towards Provenance Inference. In: IEEE 8th International Conference on eScience, 8-12 Oct 2012, Chicago, USA. pp. 1-8. IEEE Computer Society. ISBN 978-1-4673-4467-8
Huq, M.R. and Apers, P.M.G. and Wombacher, A. (2012) Fine-Grained Provenance Inference for a Large Processing Chain with Non-materialized Intermediate Views. In: Proceedings of the 24th International Conference of Scientific and Statistical Database Management (SSDBM 2012), 25-27 June 2012, Chania, Greece. pp. 397-405. Lecture Notes in Computer Science 7338. Springer Verlag. ISSN 0302-9743 ISBN 978-3-642-31234-2
Huq, M.R. and Apers, P.M.G. and Wombacher, A. (2012) Probabilistic inference of fine-grained data provenance. In: 23rd International Conference on Database and Expert System Applications (DEXA 2012), 3-7 Sept 2012, Vienna, Austria. pp. 296-310. Lecture Notes in Computer Science 7446. Springer Verlag. ISSN 0302-9743 ISBN 978-3-642-32599-1
Zhu, Zhemin and Hiemstra, D. and Apers, P.M.G. and Wombacher, A. (2012) Separate Training for Conditional Random Fields Using Co-occurrence Rate Factorization. Technical Report TR-CTIT-12-29, Centre for Telematics and Information Technology, University of Twente, Enschede. ISSN 1381-3625

2011

Huq, M.R. and Wombacher, A. and Apers, P.M.G. (2011) Adaptive Inference of Fine-grained Data Provenance to Achieve High Accuracy at Lower Storage Costs. In: 7th IEEE International Conference on E-Science, e-Science 2011, 05-08 Dec 2011, Stockholm, Sweden. pp. 202-209. IEEE Computer Society. ISBN 978-1-4577-2163-2
Huq, M.R. and Wombacher, A. and Apers, P.M.G. (2011) Inferring Fine-Grained Data Provenance in Stream Data Processing: Reduced Storage Cost, High Accuracy. In: 22nd International Conference on Database and Expert Systems Applications (DEXA 2011), 29 Aug - 02 Sep 2011, Toulouse, France. pp. 118-127. Lecture Notes in Computer Science 6861. Springer Verlag. ISSN 0302-9743 ISBN 978-3-642-23090-5

2010

Huq, M.R. and Wombacher, A. and Apers, P.M.G. (2010) Facilitating Fine Grained Data Provenance using Temporal Data Model. In: Proceedings of the Seventh International Workshop on Data Management for Sensor Networks, DMSN 2010, 13 Sep 2010, Singapore. pp. 8-13. ACM. ISBN 978-1-4503-0416-0
Huq, M.R. and Wombacher, A. and Apers, P.M.G. (2010) Identifying the Challenges for Optimizing the Process to Achieve Reproducible Results in E-science Applications. In: Proceedings of the 3rd Workshop on Ph.D. Students in Information and Knowledge Management, PIKM 2010, 30 Oct 2010, Toronto, Canada. pp. 75-78. ACM. ISBN 978-1-4503-0385-9

2009

Evers, S. and Fokkinga, M.M. and Apers, P.M.G. (2009) Inference Optimization using Relational Algebra. Technical Report TR-CTIT-09-38, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Sinderen, M.J. and Pras, A. and Haverkort, B.R.H.M. and Apers, P.M.G. and Hartel, P.H. and van de Pol, J.C. and Nijholt, A. and Wieringa, R.J. and Havinga, P.J.M. and Akşit, M. (2009) Research Self-Evaluation 2003-2008, Computer Science Department, University of Twente. Technical Report Number UNSPECIFIED, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2008

Anciaux, N.L.G. and Bouganim, L. and van Heerde, H.J.W. and Pucheral, P. and Apers, P.M.G. (2008) InstantDB: Enforcing Timely Degradation of Sensitive Data. In: Proceedings of the 24th International Conference on Data Engineering (ICDE2008), 7-12 April 2008, Cancun, Mexico. pp. 1373-1375. IEEE Computer Society. ISBN 978-1-4244-1837-4
Anciaux, N.L.G. and Bouganim, L. and van Heerde, H.J.W. and Pucheral, P. and Apers, P.M.G. (2008) Data Degradation: Making Private Data Less Sensitive Over Time. In: Proceedings of the 17th ACM Conference on Information and Knowledge Management (CIKM2008), 26-30 Oct 2008, Napa valley, California, USA. pp. 1401-1402. ACM. ISBN 978-1-59593-991-3
Anciaux, N.L.G. and Bouganim, L. and van Heerde, H.J.W. and Pucheral, P. and Apers, P.M.G. (2008) The Life-Cycle Policy model. Research report RR-6577, Institut National de Recherche en Informatique et en Automatique, Rocquencourt, France. ISSN 0249-6399
Evers, S. and Fokkinga, M.M. and Apers, P.M.G. (2008) Probabilistic Processing of Interval-valued Sensor Data. In: Proceedings of the 5th International Workshop on Data Management for Sensor Networks (DMSN2008), 24 Aug 2008, Auckland, New Zealand. pp. 42-48. ACM International Conference Proceeding Series. ACM. ISBN 978-1-60558-284-9
Hiemstra, D. and Klinger, S. and Rode, H. and Flokstra, Jan and Apers, P.M.G. (2008) Sound ranking algorithms for XML search. In: Proceedings of the 2nd SIGIR workshop on Focused Retrieval, 24 Jul 2008, Singapore. pp. 15-21. University of Otago. ISBN 978-0-473-13468-6
Serdyukov, P. and Feng, Ling and van Bunningen, A.H. and Evers, S. and van Heerde, H.J.W. and Apers, P.M.G. and Fokkinga, M.M. and Hiemstra, D. (2008) The right expert at the right time and place: From expertise identification to expertise selection. In: Proceedings of the 7th International Conference on Practical Aspects of Knowledge Management (PAKM2008), 21-23 Nov 2008, Yokohama, Japan. pp. 38-49. Lecture Notes in Artificial Intelligence 5345. Springer Verlag. ISSN 0302-9743 ISBN 978-3-540-89446-9

2007

van Bunningen, A.H. and Feng, Ling and Fokkinga, M.M. and Apers, P.M.G. (2007) An Answer Explanation Model for Probabilistic Database Queries. Technical Report TR-CTIT-07-41, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Bunningen, A.H. and Fokkinga, M.M. and Apers, P.M.G. and Feng, Ling (2007) Ranking Query Results using Context-Aware Preferences. In: First International Workshop on Ranking in Databases (DBRank 2007), April 16, 2007, Istanbul, Turkey. pp. 269-276. IEEE Computer Society. ISBN 978-1-4244-0832-0
Evers, S. and Fokkinga, M.M. and Apers, P.M.G. (2007) Composable Markov Building Blocks. Technical Report TR-CTIT-07-32, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Evers, S. and Fokkinga, M.M. and Apers, P.M.G. (2007) Composable Markov Building Blocks. In: Proceedings of the 1st International Conference on Scalable Uncertainty Management (SUM 2007), 10-12 Oct 2007, Washington DC, USA. pp. 131-142. Lecture Notes in Computer Science 4772. Springer Verlag. ISBN 978-3-540-75407-7
van Heerde, H.J.W. and Anciaux, N.L.G. and Fokkinga, M.M. and Apers, P.M.G. (2007) Exploring personalized life cycle policies. Technical Report TR-CTIT-07-85, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Serdyukov, P. and Hiemstra, D. and Fokkinga, M.M. and Apers, P.M.G. (2007) Generative Modeling of Persons and Documents for Expert Search. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2007), 23-27 Jul 2007, Amsterdam, Netherlands. pp. 827-828. ACM Press. ISBN 978-1-59593-597-7

2006

Anciaux, N.L.G. and van Heerde, H.J.W. and Feng, Ling and Apers, P.M.G. (2006) Implanting Life-Cycle Privacy Policies in a Context Database. Technical Report TR-CTIT-06-03, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Bunningen, A.H. and Feng, Ling and Apers, P.M.G. (2006) Using Description Logics to Model Context Aware Query Preferences. Technical Report TR-CTIT-06-17, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Bunningen, A.H. and Feng, Ling and Apers, P.M.G. (2006) A context-aware preference model for database querying in an Ambient Intelligent environment. In: Proceedings of the 17th International Conference on Database and Expert Systems Applications (DEXA 2006), 4-8 Sep 2006, Krakow, Poland. pp. 33-43. Lecture Notes in Computer Science 4080. Springer Verlag. ISSN 0302-9743 ISBN 978-3-540-37871-6
van Bunningen, A.H. and Feng, Ling and Apers, P.M.G. (2006) Modeling Uncertain Context Information via Event Probabilities. In: Proceedings of the 2nd Twente Data Management Workshop (TDM'06) on Uncertainty in Databases, 6 Jun 2006, Enschede, The Netherlands. pp. 25-32. CTIT Workshop Series WP 06-01. Centre for Telematics and Information Technology University of Twente. ISSN 1574-0846
van Heerde, H.J.W. and Anciaux, N.L.G. and Feng, Ling and Apers, P.M.G. (2006) Balancing smartness and privacy for the Ambient Intelligence. In: Proceedings of the 1st European Conference on Smart Sensing and Context (EuroSCC 2006), 25-27 Oct 2006, Enschede, The Netherlands. pp. 255-258. Lecture Notes in Computer Science 4272. Springer Verlag. ISBN 3-540-47842-6
Mihajlovic, V. and Hiemstra, D. and Blok, H.E. and Apers, P.M.G. (2006) Exploiting Query Structure and Document Structure to Improve Document Retrieval Effectiveness. Technical Report TR-CTIT-06-57, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2005

van Bunningen, A.H. and Feng, Ling and Apers, P.M.G. (2005) Context for Ubiquitous Data Management. In: International Workshop on Ubiquitous Data Management (UDM2005), 4 Apr 2005, Tokyo, Japan. pp. 17-24. IEE Conference Proceeding. IEEE Computer Society. ISBN 0-7695-2411-7
Mihajlovic, V. and Blok, H.E. and Hiemstra, D. and Apers, P.M.G. (2005) Score Region Algebra: Building a Transparant XML-IR Database. Technical Report TR-CTIT-05-60, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Mihajlovic, V. and Blok, H.E. and Hiemstra, D. and Apers, P.M.G. (2005) Score Region Algebra: Building a Transparent XML-IR Database. In: Proceedings of the 14th ACM international conference on Information and knowledge management (CIKM 2005), 31 Oct - 5 Nov 2005, Bremen, Germany. pp. 12-19. ACM Press. ISBN 1-59593-140-6
Mihajlovic, V. and Hiemstra, D. and Blok, H.E. and Apers, P.M.G. (2005) Utilizing Structural Knowledge for Information Retrieval in XML Databases. Technical Report TR-CTIT-05-19, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2004

Blok, H.E. and Choenni, R.S. and Blanken, H.M. and Apers, P.M.G. (2004) A Selectivity Model for Fragmented Relations: Applied in Information Retrieval. IEEE Transactions on Knowledge and Data Engineering, 16 (5). pp. 635-639. ISSN 1041-4347 *** ISI Impact 2,476 ***
Feng, Ling and Apers, P.M.G. and Jonker, W. (2004) Towards Context-Aware Data Management for Ambient Intelligence. In: Proceedings of the 15th International Conference on Database and Expert Systems Applications (DEXA 2004), Aug 30-Sep 3, 2004, Zaragoza, Spain. pp. 422-431. Lecture Notes in Computer Science 3180. Springer-Verlag. ISBN 3-540-22936-1
Mihajlovic, V. and Hiemstra, D. and Blok, H.E. and Apers, P.M.G. (2004) An XML-IR-DB-Sandwich: Is it Better with an Algebra in Between? In: Proceedings of the Joint Workshops on XML, IR, and DB, 29 Jul 2004, Sheffield, United Kingdom. pp. 39-46.

2003

Mihajlovic, V. and Hiemstra, D. and Apers, P.M.G. (2003) CIRQuL: Complex Information Retrieval Query Language. In: Proceedings of the VLDB 2003 PhD Workshop, 12-13 Sep 2003, Berlin, Germany. CEUR Workshop Proceedings 76. CEUR-WS.org. ISSN 1613-0073
Mihajlovic, V. and Hiemstra, D. and Apers, P.M.G. (2003) On Region Algebras, XML Databases, and Information Retrieval. In: Proceedings of the 4th Dutch-Belgian Information Retrieval Workshop (DIR), 8-9 December 2003, Amsterdam. pp. 63-69. Institute for Logic, Language and Computation. ISBN not assigned

2002

Blok, H.E. and Choenni, R.S. and Wac, K.E. and Blanken, H.M. and Apers, P.M.G. (2002) A selectivity model for fragmented relations: Evaluated for different standard data distributions. Technical Report TR-CTIT-02-33, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Petkovic, M. and Windhouwer, M.A. and van Zwol, R. and Blok, H.E. and Apers, P.M.G. and Kersten, M.L. and Jonker, W. (2002) Content-based Video Indexing for the Support of Digital Library Search. In: Proceedings of the 18th International Conference on Data Engineering (ICDE 2002), 26 Feb - 1 Mar 2002, San Jose, CA, USA. pp. 494-495. IEEE Computer Society. ISSN 1063-6382
van Zwol, R. and Apers, P.M.G. (2002) Retrieval performance experiment with the webspace method. In: Proceedings of the 19th British National Conference on Databases (BNCOD 2002), 17-19 Jul 2002, Sheffield, UK. pp. 150-165. Lecture Notes in Computer Science 2405. Springer Verlag. ISSN 0302-9743
van Zwol, R. and Apers, P.M.G. (2002) Complex query formulation with the webspace method. In: Proceedings of the 6th World Multi-Conference on Systematics, Cybernetics, and Informatics, 14-18 Jul 2002, Orlando, Florida, USA. International Institute of Informatics and Systemics (IIIS).
van Zwol, R. and Fokkinga, M.M. and Jeronimus, V. and Apers, P.M.G. (2002) Data Exchange over Web-based Applications with DXL. In: 2nd International Workshop on Data Integration on the Web (DIWeb 2002), 28 May 2002, Toronto, Canada. pp. 17-33. University of Toronto Press.

2001

Blok, H.E. and Choenni, R.S. and Blanken, H.M. and Apers, P.M.G. (2001) A selectivity model for fragmented relations in information retrieval. Technical Report TR-CTIT-01-02, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Blok, H.E. and Hiemstra, D. and Choenni, R.S. and de Jong, F.M.G. and Blanken, H.M. and Apers, P.M.G. (2001) Predicting the cost-quality trade-off for information retrieval queries: Facilitating database design and query optimization. Technical Report TR-CTIT-01-33, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Blok, H.E. and Hiemstra, D. and Choenni, R.S. and de Jong, F.M.G. and Blanken, H.M. and Apers, P.M.G. (2001) Predicting the cost-quality trade-off for information retrieval queries: Facilitating database design and query optimization. In: Proceedings of the tenth international conference on Information and knowledge management (CIKM 2001), 5-10 Nov 2001, Atlanta, Georgia, USA. pp. 207-214. ACM Press. ISBN 1-58113-436-3
Blok, H.E. and de Vries, A.P. and Blanken, H.M. and Apers, P.M.G. (2001) Experiences with IR Top N Optimization in a Main Memory DBMS: Applying 'The Database Approach' in New Domains. In: Advances in Databases : Proceedings of the 18th British National Conference on Databases (BNCOD 2001), 9-11 Jul 2001, Chilton, UK. pp. 126-151. Lecture Notes in Computer Science 2097. Springer Verlag. ISSN 0302-9743
Blok, H.E. and Windhouwer, M.A. and van Zwol, R. and Petkovic, M. and Apers, P.M.G. and Kersten, M.L. and Jonker, W. (2001) Flexible and scalable digital library search. In: Proceedings of the 27th International Conference on Very Large Data Bases (VLDB 2001), 11-14 Sep 2001, Rome, Italy. pp. 705-706. Morgan Kaufmann Publishers Inc.. ISBN 1-55860-804-4
Grefen, P.W.P.J. and Vonk, J. and Apers, P.M.G. (2001) Global transaction support for workflow management systems: from formal specification to practical implementation. The VLDB Journal, 10 (4). pp. 316-333. ISSN 1066-8888 *** ISI Impact 1,744 ***
van Zwol, R. and Apers, P.M.G. (2001) Webspace query formulation: an overview. Technical Report TR-CTIT-01-46, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Zwol, R. and Apers, P.M.G. (2001) Webspace retrieval performance experiment. Technical Report TR-CTIT-01-45, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
van Zwol, R. and Jeronimus, V. and Fokkinga, M.M. and Apers, P.M.G. (2001) DXL: Data eXchange Language. Technical Report TR-CTIT-01-47, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

2000

Liu, Kecheng and Apers, P.M.G. and Chattopadhyay, S. and Cheng, Albert and Fox, M. and Greene, T. and Klein, M. and Stamper, R. (2000) Enterprise Information Systems: issues, challenges and viewpoints. In: Enterprise information systems. Kluwer Academic Publishers, Norwell, MA, USA, pp. 1-13. ISBN 0-7923-6239-X
de Vries, A.P. and Windhouwer, M.A. and Apers, P.M.G. and Kersten, M.L. (2000) Information Access in Multimedia Databases based on Feature Models. New Generation Computing, 18 (4). pp. 323-339. ISSN 0288-3635 *** ISI Impact 0,533 ***
van Zwol, R. and Apers, P.M.G. (2000) Modeling the webspace of an intranet. In: Proceedings of the 1st International Conference on Web Information Systems Engineering (WISE 2000), 19-21 Jun 2000, Hong Kong, China. pp. 260-269. IEEE Computer Society. ISBN 0-7695-0577-5
van Zwol, R. and Apers, P.M.G. (2000) Using Webspaces to Model Document Collections on the Web. In: Conceptual Modeling for E-Business and the Web: ER 2000 Workshops on Conceptual Modeling Approaches for E-Business and The World Wide Web and Conceptual Modeling, 9-12 Oct 2000, alt Lake City, Utah, USA. pp. 101-114. Lecture Notes in Computer Science 1921. Springer Verlag. ISSN 0302-9743
van Zwol, R. and Apers, P.M.G. (2000) The webspace method: on the integration of database technology with multimedia retrieval. In: Proceedings of the 9th International Conference on Information KnowledgeManagement (CIKM 2000), 6-11 Nov 2000, McLean, Virginia, USA. pp. 438-445. ACM Press. ISBN 1-58113-320-0

1999

Grefen, P.W.P.J. and Vonk, J. and Boertjes, E.M. and Apers, P.M.G. (1999) Semantics and Architecture of Global Transaction Support in Workflow Environments. In: Proceedings of the Fourth IECIS International Conference on Cooperative Information Systems, 2-4 Sep 1999, Edinburgh, Scotland. pp. 348-359. IEEE Computer Society. ISBN 0-7695-0384-5
Vonk, J. and Grefen, P.W.P.J. and Boertjes, E.M. and Apers, P.M.G. (1999) Distributed Global Transaction Support for Workflow Management Applications. Technical Report TR-CTIT-99-11, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Vonk, J. and Grefen, P.W.P.J. and Boertjes, E.M. and Apers, P.M.G. (1999) Distributed Global Transaction Support for Workflow Management Applications. In: Distributed Global Transaction Support for Workflow Management Applications (DEXA 1999), 30 Aug - 3 Sep 1999, Florence, Italy. pp. 942-951. Lecture Notes in Computer Science 1677. Springer Verlag. ISSN 0302-9743
de Vries, A.P. and van Doorn, M.G.L.M. and Blanken, H.M. and Apers, P.M.G. (1999) The Mirror MMDBMS architecture. In: Proceedings of 25th International Conference on Very Large Data Bases (VLDB 1999), 7-10 Sep 1999, Edinburgh, Scotland, UK. pp. 758-761. Morgan Kaufmann Publishers Inc.. ISBN 1-55860-615-7

1998

Boertjes, E.M. and Grefen, P.W.P.J. and Vonk, J. and Apers, P.M.G. (1998) An Architecture for Nested Transaction Support on Standard Database Systems. Technical Report TR-CTIT-98-06, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Boertjes, E.M. and Grefen, P.W.P.J. and Vonk, J. and Apers, P.M.G. (1998) An Architecture for Nested Transaction Support on Standard Database Systems. In: Proceedings of the 9th International Conference on Database and Expert Systems Applications (DEXA 1998), 24-28 Aug 1998, Vienna, Austria. pp. 448-459. Lecture Notes in Computer Science 1460. Springer Verlag. ISSN 0302-9743
Chan, D.K.C. and Vonk, J. and Sánchez, G. and Grefen, P.W.P.J. and Apers, P.M.G. (1998) A Specification Language for the WIDE Workflow Model. In: Proceedings 1998 ACM Symposium on Applied Computing (SAC 1998), 27 Feb - 1 Mar 1998, Atlanta, GA, USA. pp. 197-199. ACM Press. ISBN 0-89791-969-6
Faase, F.J. and Even, S.J. and de By, R.A. and Apers, P.M.G. (1998) Integrating organisational and transactional aspects of cooperative activities. In: Proceedings 6th Workshop on Database Programming Languages (DBPL 1997), 18-20 Aug 1997, Estes Park, Colorado, USA. pp. 336-354. Lecture Notes in Computer Science 1369. Springer Verlag. ISBN 3-540-64823-2
Grefen, P.W.P.J. and Vonk, J. and Boertjes, E.M. and Apers, P.M.G. (1998) Global Transaction Support: Formal Specification and Practical Application. Technical Report TR-CTIT-98-10, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Vermeer, W.W.M. and Apers, P.M.G. (1998) Specifying global behaviour in database federations. Information Systems, 23 (3-4). pp. 217-233. ISSN 0306-4379 *** ISI Impact 1,832 ***

1997

Apers, P.M.G. and Blanken, H.M. and Houtsma, M.A.W. (1997) Preface. In: Multimedia Databases in Perspective. Springer Verlag, New York. ISBN 3-540-76109-8
Grefen, P.W.P.J. and Vonk, J. and Boertjes, E.M. and Apers, P.M.G. (1997) Two-Layer Transaction Management for Workflow Management. Technical Report TR-CTIT-97-07, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625
Grefen, P.W.P.J. and Vonk, J. and Boertjes, E.M. and Apers, P.M.G. (1997) Two-Layer Transaction Management for Workflow Management Applications. In: Proceedings of the 8th International Conference on Database and Expert Systems Applications (DEXA 1997), 1-5 Sep 1997, Toulouse, France. pp. 430-439. Lecture Notes in Computer Science 1308. Springer Verlag. ISSN 0302-9743 ISBN 3-540-63478-9
Vermeer, W.W.M. and Apers, P.M.G. (1997) Modifying queries on complex objects in database federations. International journal of cooperative information systems, 6 (3 and 4). pp. 219-240. ISSN 0218-8430 *** ISI Impact 0,526 ***
Vermeer, W.W.M. and Apers, P.M.G. (1997) Query modification in object-oriented database federations. In: Proceedings of the Second IFCIS International Conference on Cooperative Information Systems (CoopIS 1997), 24-27 Jun 1997, Kiawah Island, South Carolina, USA. pp. 193-202. IEEE Computer Society. ISBN 0-8186-7946-8
Vermeer, W.W.M. and Apers, P.M.G. (1997) Behaviour specification in database interoperation. In: Proceedings of the 9th International Conference on Advanced Information Systems Engineering (CAISE 1997), 16-20 Jun 1997, Barcelona, Catalonia, Spain. pp. 61-74. Lecture Notes in Computer Science 1250. Springer Verlag. ISSN 0302-9743 ISBN 3-540-63107-0

1996

Vermeer, W.W.M. and Apers, P.M.G. (1996) On the applicability of schema integration techniques to database interoperation. In: Proceedings of the 15th International Conference on Conceptual Modeling (ER 1996), 7-10 Oct 1996, Cottbus, Germany. pp. 179-194. Lecture Notes in Computer Science 1157. Springer Verlag. ISSN 0302-9743 ISBN 3-540-61784-1
Vermeer, W.W.M. and Apers, P.M.G. (1996) The role of integrity constraints in database interoperation. In: Proceedings of the 22th International Conference on Very Large Data Bases (VLDB 1996), 3-6 Sep 1996, Mumbai (Bombay), India. pp. 425-435. Morgan Kaufmann Publishers. ISBN 1-55860-382-4
Wilschut, A.N. and Flokstra, Jan and Apers, P.M.G. (1996) Parallel Evaluation of Multi-join Queries. In: Proceedings of the Third International ACPC Conference with Special Emphasis on Parallel Databases and Parallel I/O: Parallel Computation, 23-25 Sep 1996, Klagenfurt, Austria. pp. 90-97. Lecture Notes in Computer Science 1127. Springer Verlag. ISSN 0302-9743 ISBN 3-540-61695-0

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
Veenhof, H.M. and Apers, P.M.G. and Houtsma, M.A.W. (1995) Optimization of Spatial Joins Using Filters. In: Proceedings of the 13th British National Conference on Databases: Advances in Databases (BNCOD 1995), 12-14 Jul 1995, Manchester, UK. pp. 136-154. Lecture Notes in Computer Science 940. Springer Verlag. ISSN 0302-9743 ISBN 3-540-60100-7
Vermeer, W.W.M. and Apers, P.M.G. (1995) Reverse engineering of relational database applications. In: Proceedings of the 14th International Conference on Object-Oriented and Entity-Relationship Modelling (OOER 1995), 12-15 Dec 1995, Gold Coast, Australia. pp. 89-100. Lecture Notes in Computer Science 1021. Springer Verlag. ISSN 0302-9743 ISBN 3-540-60672-6
Vermeer, W.W.M. and Apers, P.M.G. (1995) Object-oriented views of relational databases incorporating behaviour. In: Proceedings of the 4th International Conference on Database Systems for Advanced Applications (DASFAA 1995), 11-13 Apr 1995, Singapore. pp. 26-35. Advanced Database Research and Development Series 5. World Scientific Press. ISBN 981-02-2220-3
Wilschut, A.N. and Flokstra, Jan and Apers, P.M.G. (1995) Parallel evaluation of multi-join queries. In: ACM SIGMOD International Conference on Management of Data (SIGMOD 1995), 22-25 May 1995, San Jose, CA, USA. pp. 115-126. ACM Press. ISBN 0-89791-731-6

1994

Apers, P.M.G. (1994) Identifying Internet-related database research. In: Proceedings of the Second International East/West Database Workshop, 25-28 Sep 1994, Klagenfurt, Austria. pp. 183-193. Workshops in Computing. Springer-Verlag. ISBN 3-540-19946-2
Grefen, P.W.P.J. and de By, R.A. and Apers, P.M.G. (1994) Integrity Control in Advanced Database Systems. IEEE Bulletin on Data Engineering, 17 (2). pp. 9-13.
Steenhagen, H.J. and Apers, P.M.G. and Blanken, H.M. and de By, R.A. (1994) From Nested-Loop to Join Queries in OODB. In: Proceedings of 20th International Conference on Very Large Data Bases (VLDB 1994), 12-15 Sep 1994, Santiago de Chile, Chile. pp. 618-629. Morgan Kaufmann Publishers Inc.. ISBN 1-55860-153-8
Wilschut, A.N. and Apers, P.M.G. (1994) Understanding large scale parallelism for data management. (Invited) In: Proceedings of the 3rd International Conference on Parallel and Distributed Information Systems (PDIS), 28-30 Sep 1994, Austin, Texas, USA. pp. 4-4. IEEE Computer Society. ISBN 0-8186-6400-2

1993

Apers, P.M.G. and Balsters, H. and Blanken, H.M. and de By, R.A. and Houtsma, M.A.W. and Verkoulen, P.A.C. and Wilschut, A.N. (1993) Database research at the University of Twente. SIGMOD record, 22 (4). pp. 87-91. ISSN 0163-5808 *** ISI Impact 0,698 ***
Grefen, P.W.P.J. and Apers, P.M.G. (1993) A Graph-Based Approach to Action Scheduling in a Parallel Database System. Journal on Computers and Artificial Intelligence, 12 (3). pp. 251-278. ISSN 0232-0274
Grefen, P.W.P.J. and Apers, P.M.G. (1993) Integrity Control in Relational Database Systems - An Overview. Data and knowledge engineering, 10 (2). pp. 187-223. ISSN 0169-023X *** ISI Impact 1,500 ***
Houtsma, M.A.W. and Apers, P.M.G. and Schipper, G.L.V. (1993) Data fragmentation for parallel transitive closure strategies. In: Proceedings of the 9th International Conference on Data Engineering (ICDE 1993), 19-23 April 1993, Vienna, Austria. pp. 447-456. IEEE Computer Society. ISBN 0-8186-3570-3
Veenhof, H.M. and Houtsma, M.A.W. and Apers, P.M.G. (1993) Query optimization for GIS using filters. In: Proceedings of The First ACM Workshop on Advances in Geographic Information Systems (ACM GIS 1993), Arlington, Virginia, USA. ACM Press.
Wilschut, A.N. and Apers, P.M.G. (1993) Dataflow Query Execution in a Parallel, Main-memory Environment. Distributed and Parallel Databases, 1 (1). pp. 103-128. ISSN 0926-8782 *** ISI Impact 0,800 ***

1992

Apers, P.M.G. and van den Berg, C.A. and Flokstra, Jan and Grefen, P.W.P.J. and Kersten, M.L. and Wilschut, A.N. (1992) PRISMA/DB: A Parallel Main-Memory Relational DBMS. IEEE Transactions on Knowledge and Data Engineering, 4 (6). pp. 541-554. ISSN 1041-4347 *** ISI Impact 2,476 ***
Grefen, P.W.P.J. and Apers, P.M.G. (1992) Dynamic Action Scheduling in a Parallel Database System. In: Proceedings of the 4th International Conference on Parallel Architectures and Languages Europe (PARLE 1992), 15-18 Jun 1992, Paris, France. pp. 807-824. Lecture Notes in Computer Science 605. Springer Verlag. ISSN 0302-9743 ISBN 978-3-540-55599-5
Grefen, P.W.P.J. and Flokstra, Jan and Apers, P.M.G. (1992) Performance Evaluation of Integrity Control in a Parallel Main-Memory Database System. In: Proceedings of the 3rd International Conference on Database and Expert System Applications (DEXA 1992), Valencia, Spain. pp. 96-101. Springer Verlag. ISBN 3-211-82400-6
Houtsma, M.A.W. and Apers, P.M.G. (1992) Algebraic optimization of recursive queries. Data and knowledge engineering, 7 (4). pp. 299-325. ISSN 0169-023X *** ISI Impact 1,500 ***
Wilschut, A.N. and Flokstra, Jan and Apers, P.M.G. (1992) Parallelism in a Main-Memory System: The Performance of PRISMA/DB. In: Proceedings of the 18th International Conference on Very Large Data Bases (VLDB 1992), 23-27 Aug 1992, Vancouver, Canada. pp. 521-532. Morgan Kaufmann. ISBN 1-55860-151-1

1991

Apers, P.M.G. and Scheuermann, P. (1991) Schema architecture and their relationships to transaction processing in distributed database systems. Information Sciences, 54 (1-2). pp. 41-66. ISSN 0020-0255 *** ISI Impact 3,364 ***
Grefen, P.W.P.J. and Apers, P.M.G. (1991) Integrity constraint enforcement through transaction modification. In: Proceedings 2nd International Conference on Database and Expert System Applications (DEXA 1991), Berlin, Germany. pp. 362-367. Springer Verlag. ISBN 3-211-82301-8
Steenhagen, H.J. and Apers, P.M.G. (1991) Implementation of the Object-Oriented Data Model TM. In: Query Processing for Advanced Database Systems, Selected Contributions from a Workshop on "Query Processing in Object-Oriented, Complex-Object and Nested Relation Databases", June 1991, Schloss Dagstuhl, Germany. pp. 273-303. Morgan Kaufmann. ISBN 1-55860-271-2
Wilschut, A.N. and Apers, P.M.G. (1991) Dataflow Query Execution in a Parallel Main-Memory Environment. In: Proceedings of the First International Conference on Parallel and Distributed Information Systems (PDIS 1991), 4-6 Dec 1991, Miami Beach, Florida, USA. pp. 68-77. IEEE Computer Society. ISBN 0-8186-2295-4

1990

Apers, P.M.G. and Hertzberger, L.O. and Hulshof, B.J.A. (1990) The PRISMA experiment. In: PRISMA Workshop on Parallel Database Systems, Noordwijk, The Netherlands. pp. 181-192. Springer-Verlag.
Apers, P.M.G. and Hertzberger, L.O. and Hulshof, B.J.A. and Oerlemans, H. and Kersten, M.L. (1990) PRISMA, a platform for experiments with parallelism. In: PRISMA Workshop on Parallel Database Systems, 24-26 Sep 1990, Noordwijk, The Netherlands. pp. 169-180. Lecture Notes in Computer Science 503. Springer-Verlag. ISSN 0302-9743 ISBN 3-540-54132-5
Grefen, P.W.P.J. and Apers, P.M.G. (1990) Parallel handling of integrity constraints on fragmented relations. In: Proceedings of the 2nd International Symposium on Databases in Parallel and Distributed Systems (PDIS 1990), 2-4 Jul 1990, Dublin, Ireland. pp. 138-145. IEEE Computer Society. ISBN 0-8186-2052-8
Wilschut, A.N. and Apers, P.M.G. (1990) Pipelining in query execution. In: Proceedings of the International Conference on Databases, Parallel Architectures and Their Applications (PARBASE 1990), 7-9 March 1990, Miami Beach, FL, USA. pp. 562-562. IEEE Computer Society. ISBN 0-8186-2035-8
Wilschut, A.N. and Apers, P.M.G. and Flokstra, Jan (1990) Parallel Query Execution in PRISMA/DB. In: Parallel Database Systems, PRISMA Workshop, 24-26 Sep 1990, Noordwijk, The Netherlands. pp. 424-433. Lecture Notes in Computer Science 503. Springer-Verlag. ISSN 0302-9743 ISBN 978-3-540-54132-5

1989

Wilschut, A.N. and Grefen, P.W.P.J. and Apers, P.M.G. and Kersten, M.L. (1989) Implementing PRISMA/DB in an OOPL. In: Database Machines, Sixth International Workshop, IWDM 1989, 19-21 Jun 1989, Deauville, France. pp. 97-111. Lecture Notes in Computer Science 368. Springer Verlag. ISSN 0302-9743 ISBN 3-540-51324-8

1987

Houtsma, M.A.W. and Apers, P.M.G. (1987) Data and Knowledge model: A proposal. In: Advances in Database Programming Languages, Papers from DBPL-1, Sep 1987, Roscoff, France. pp. 387-402. ACM Press and Addison Wesley. ISBN 0-201-50257-7

1983

Apers, P.M.G. and Hevner, A.R. and Yao, S.B. (1983) Optimization Algorithms for Distributed Queries. IEEE transactions on software engineering, 9 (1). pp. 57-68. ISSN 0098-5589 *** ISI Impact 1,516 ***

1982

Apers, P.M.G. (1982) Query Processing and Data Allocation in Distributed Database Systems. PhD thesis, Vrije Universiteit, Amsterdam. Mathematical Centre tracts 156 ISBN 90-6196-251-X