Peter Maria Gerardus Apers

prof.dr.

  • 775 Citations
  • 13 h-Index
1982 …2014
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Research Output 1982 2014

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2013
58 Downloads (Pure)

Closed form maximum likelihood estimator of conditional random fields

Zhu, Z., Hiemstra, D., Apers, P. M. G. & Wombacher, A., 12 Feb 2013, Enschede: Centre for Telematics and Information Technology (CTIT). (CTIT Technical Report Series; no. TR-CTIT-13-03)

Research output: Book/ReportReportProfessional

File
2012
15 Downloads (Pure)

Separate Training for Conditional Random Fields Using Co-occurrence Rate Factorization

Zhu, Z., Hiemstra, D., Apers, P. M. G. & Wombacher, A., 1 Oct 2012, Enschede: Centre for Telematics and Information Technology (CTIT). 10 p. (CTIT Technical Report Series; no. TR-CTIT-12-29)

Research output: Book/ReportReportProfessional

File
2009
37 Downloads (Pure)

Inference Optimization using Relational Algebra

Evers, S., Fokkinga, M. M. & Apers, P. M. G., Aug 2009, Enschede: Databases (DB). 13 p. (CTIT Technical Report Series; no. TR-CTIT-09-38)

Research output: Book/ReportReportProfessional

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2008
24 Downloads (Pure)

The Life-Cycle Policy model

Anciaux, N. L. G., Bouganim, L., van Heerde, H. J. W., Pucheral, P. & Apers, P. M. G., Jul 2008, Rocquencourt, France: Institut National de Recherche en Informatique et en Automatique. 25 p. (Rapport de recherche; no. WoTUG-31/RR-6577)

Research output: Book/ReportReportProfessional

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2007
26 Downloads (Pure)

An Answer Explanation Model for Probabilistic Database Queries

van Bunningen, A. H., Feng, L., Fokkinga, M. M. & Apers, P. M. G., 28 Jun 2007, Enschede: Centre for Telematics and Information Technology (CTIT). 20 p. (CTIT Technical Report Series; no. 1/TR-CTIT-07-41)

Research output: Book/ReportReportProfessional

File
12 Downloads (Pure)

Composable Markov Building Blocks

Evers, S., Fokkinga, M. M. & Apers, P. M. G., 11 May 2007, Enschede: Centre for Telematics and Information Technology (CTIT). 10 p. (CTIT Technical Report Series; no. WP07-01/TR-CTIT-07-32)

Research output: Book/ReportReportProfessional

File
53 Downloads (Pure)

Exploring personalized life cycle policies

van Heerde, H. J. W., Anciaux, N. L. G., Fokkinga, M. M. & Apers, P. M. G., 20 Dec 2007, Enschede: Centre for Telematics and Information Technology (CTIT). 26 p. (CTIT Technical Report Series; no. Supplement/TR-CTIT-07-85)

Research output: Book/ReportReportProfessional

File
2006

Contextual Ranking of Database Query Results

Serdyukov, P., Apers, P. M. G. (ed.) & Apers, P. M. G. (ed.), 28 Jun 2006, Enschede: Centre for Telematics and Information Technology (CTIT). 31 p. (CTIT Technical Report Series; no. 06-79)

Research output: Book/ReportReportProfessional

54 Downloads (Pure)

Exploiting Query Structure and Document Structure to Improve Document Retrieval Effectiveness

Mihajlovic, V., Hiemstra, D., Blok, H. E. & Apers, P. M. G., 1 Oct 2006, Enschede: Centre for Telematics and Information Technology (CTIT). 10 p. (CTIT Technical Report Series; no. 06-57)

Research output: Book/ReportReportProfessional

File
20 Downloads (Pure)

Implanting Life-Cycle Privacy Policies in a Context Database

Anciaux, N. L. G., van Heerde, H. J. W., Feng, L. & Apers, P. M. G., Jan 2006, Enschede: University of Twente. 20 p. (CTIT Technical Report Series; no. 06-03)

Research output: Book/ReportReportProfessional

File

Using Description Logics to Model Context Aware Query Preferences

van Bunningen, A. H., Feng, L. & Apers, P. M. G., Apr 2006, Enschede: Centrum voor Telematica en Informatie Technologie. 10 p. (CTIT Technical Report Series; no. 06-17)

Research output: Book/ReportReportProfessional

2005
36 Downloads (Pure)

Score Region Algebra: Building a Transparent XML-IR Database

Mihajlovic, V., Blok, H. E., Hiemstra, D. & Apers, P. M. G., Dec 2005, Enschede: Centre for Telematics and Information Technology (CTIT). 66 p. (CTIT Technical Report Series; no. TR-CTIT-05-60)

Research output: Book/ReportReportProfessional

Open Access
File
Information retrieval
XML
Algebra
Mathematical operators
Transparency
16 Downloads (Pure)

Utilizing Structural Knowledge for Information Retrieval in XML Databases

Mihajlovic, V., Hiemstra, D., Blok, H. E. & Apers, P. M. G., May 2005, Enschede: Databases (DB). 42 p. (CTIT-TR-05; no. 19)

Research output: Book/ReportReportProfessional

File
2002

A selectivity model for fragmented relations: Evaluated for different standard data distributions

Blok, H. E., Choenni, R. S., Wac, K. E., Blanken, H. & Apers, P. M. G., Sep 2002, Enschede: Centre for Telematics and Information Technology (CTIT). (CTIT Technical Report Series; no. 02-33)

Research output: Book/ReportReportOther research output

2001
6 Downloads (Pure)

A selectivity model for fragmented relations in information retrieval

Blok, H. E., Choenni, R. S., Blanken, H. & Apers, P. M. G., Jan 2001, Centre for Telematics and Information Technology (CTIT). 10 p. (CTIT Technical Report Series; no. 01-02)

Research output: Book/ReportReportAcademic

Open Access
File
Information retrieval
Data storage equipment
Processing
Costs

DXL: Data eXchange Language

van Zwol, R., Jeronimus, V., Jeronimus, V. N., Fokkinga, M. M. & Apers, P. M. G., Dec 2001, Centre for Telematics and Information Technology (CTIT). 17 p. (CTIT Technical Report Series; no. 01-47)

Research output: Book/ReportReportAcademic

Open Access
26 Downloads (Pure)

Predicting the cost-quality trade-off for information retrieval queries: Facilitating database design and query optimization

Blok, H. E., Hiemstra, D., Choenni, R. S., de Jong, F. M. G., Blanken, H. & Apers, P. M. G., Sep 2001, Centre for Telematics and Information Technology (CTIT). 10 p. (CTIT Technical Report Series; no. 01-33)

Research output: Book/ReportReportAcademic

Open Access
File
5 Downloads (Pure)

Webspace query formulation: an overview

van Zwol, R. & Apers, P. M. G., Dec 2001, University of Twente. 14 p. (CTIT Technical Report Series; vol. 01-46)

Research output: Book/ReportReportAcademic

Open Access
File
6 Downloads (Pure)

Webspace retrieval performance experiment

van Zwol, R. & Apers, P. M. G., Dec 2001, University of Twente. 17 p. (CTIT Technical report series; no. 01-45)

Research output: Book/ReportReportAcademic

Open Access
File
1998
8 Citations (Scopus)

An Architecture for Nested Transaction Support on Standard Database Systems

Boertjes, E. M., Grefen, P. W. P. J., Vonk, J. & Apers, P. M. G., Feb 1998, Enschede: Centre for Telematics and Information Technology (CTIT).

Research output: Book/ReportReportOther research output

An Architecture for Nested Transaction Support on Standard Database Systems

Boertjes, E. M., Grefen, P. W. P. J., Vonk, J. & Apers, P. M. G., 1998, University of Twente. 22 p. (CTIT Technical Reports Series)

Research output: Book/ReportReportAcademic

Global Transaction Support: Formal Specification and Practical Application

Grefen, P. W. P. J., Vonk, J., Boertjes, E. M. & Apers, P. M. G., 1998, Centre for Telematics and Information Technology (CTIT). 25 p. (CTIT Technical Report Series; no. 98-10)

Research output: Book/ReportReportAcademic

1997
18 Citations (Scopus)

Two-Layer Transaction Management for Workflow Management

Grefen, P. W. P. J., Vonk, J., Boertjes, E. M. & Apers, P. M. G., 1997, Enschede: Centre for Telematics and Information Technology (CTIT).

Research output: Book/ReportReportOther research output

Two-Layer Transaction Management for Workflow Management Applications

Grefen, P. W. P. J., Vonk, J., Boertjes, E. M. & Apers, P. M. G., 1997, Centre for Telematics and Information Technology (CTIT). 21 p. (CTIT Technical Report Series; no. 97-07)

Research output: Book/ReportReportAcademic

1996

A Conceptual Workflow Specification Language

Chan, K. C., Vonk, J., Sanchez, G., Grefen, P. W. P. J. & Apers, P. M. G., 1996, Centre for Telematics and Information Technology (CTIT). (CTIT Technical Report Series; no. 96-48)

Research output: Book/ReportReportAcademic

Design and Specification of WIDE Transaction Management Version 1

Grefen, P. W. P. J., Vonk, J., Chan, K. C., Boertjes, E. M. & Apers, P. M. G., 1996, Enschede: Universiteit Twente.

Research output: Book/ReportReportProfessional

Requirements for LBO transaction

Apers, P. M. G., Blanken, H. & Grefen, P. W. P. J., 1996, Enschede: Universiteit Twente.

Research output: Book/ReportReportProfessional

Transaction Models: an overview

Apers, P. M. G., Blanken, H. & Grefen, P. W. P. J., 1996, Enschede: Universiteit Twente. 23 p.

Research output: Book/ReportReportProfessional

1995
13 Downloads (Pure)

A Framework for Representation, Validation and Implementation of Database Application Semantics

van Keulen, M., Skowronek, J., Apers, P. M. G., Balsters, H., Blanken, H., de By, R. A., de By, R. A. & Flokstra, J., 1995, Enschede, The Netherlands: University of Twente. 11 p. (Memoranda Informatica; no. INF 95-37)

Research output: Book/ReportReportOther research output

Open Access
File
Semantics

Design and Validation of Reliable Complex Computer Systems

van Keulen, M., Skowronek, J., Apers, P. M. G., Balsters, H., Blanken, H., de By, R. A. & Flokstra, J., Oct 1995, Enschede, The Netherlands: University of Twente. 10 p.

Research output: Book/ReportReportOther research output

Large-scale interoperability of legacy object bases

Vermeer, W. W. M. & Apers, P. M. G., 1995, Centre for Telematics and Information Technology (CTIT). 21 p. (CTIT Technical Report Series; no. 95-17)

Research output: Book/ReportReportAcademic

1993

Detailed application requirements

Apers, P. M. G., de By, R. A., Blanken, H. & Balsters, H., 16 Feb 1993, Enschede: Universiteit Twente. (IMPRESS/AAR-Report; no. W6-001-R3)

Research output: Book/ReportReportProfessional

Exploitatieplan

Apers, P. M. G., de By, R. A., Blanken, H. & Balsters, H., 16 Feb 1993, Enschede: Universiteit Twente.

Research output: Book/ReportReportProfessional

Functional specification of the support toolkit

Apers, P. M. G., de By, R. A., Blanken, H. & Balsters, H., 16 Feb 1993, Enschede: Universiteit Twente. (IMPRESS/AAR-report; no. W7-009-R1)

Research output: Book/ReportReportProfessional