All Publications

2013

• Aeolus: An Optimizer for Distributed Intra-Node-Parallel Streaming Systems (Demo) (Abstract)
  Matthias J. Sax, Malu Castellanos, Qiming Chen, Meichun Hsu
  To appear in 29th IEEE International Conference on Data Engineering (ICDE), Brisbane, Australia, 2013/04 (pdf) (link)

• Performance Optimization for Distributed Intra-Node-Parallel Streaming Systems (Abstract)
  Matthias J. Sax, Malu Castellanos, Qiming Chen, Meichun Hsu
  To appear in 8th International Workshop on Self-Managing Database Systems (SMDB) in conjunction with ICDE, Brisbane, Australia, 2013/04 (pdf) (ppt) (link)

• Peeking into the Optimization of Data Flow Programs with MapReduce-style UDFs (demo)
  Fabian Hueske, Mathias Peters, Aljoscha Krettek, Matthias Ringwald, Kostas Tzoumas, Volker Markl, Johann-Christoph Freytag
  To appear in 29th IEEE International Conference on Data Engineering (ICDE), Brisbane, Australia, 2013/04 (pdf)

• PeRA: Individual Privacy Control in Intelligent Transportation Systems
  Martin Kost, Raffael Dzikowski, Johann-Christoph Freytag
  Proceedings of the Demonstration Session at the 15. GI-Fachtagung Datenbanksysteme für Business, Technologie und Web (BTW), Magdeburg, Germany, 2013/03 (pdf)

2012

• CANE: A Controlled Application Environment for Privacy Protection in ITS
  Stefan Dietzel, Martin Kost, Florian Schaub, Frank Kargl
  Proceedings of the 12th International Conference on ITS Telecommunications, ITST 2012, Taipei, Taiwan, 2012 Nov., 2012/11 (pdf)

• Opening the Black Boxes in Data Flow Optimization (Abstract)
  Fabian Hueske, Mathias Peters, Matthias J. Sax, Astrid Rheinländer, Rico Bergmann, Aljoscha Krettek, Kostas Tzoumas
  Proceedings of the 38th International Conference on Very Large Data Bases, PVLDB 5(11):1256-1267, Istanbul, Turkey, 2012/08 (pdf)

• Privacy Protocol for Linking Distributed Medical Data
  Daniel Janusz, Martin Kost, Johann-Christoph Freytag
  Proceedings of the 9th Workshop on SECURE DATA MANAGEMENT (SDM'12) at the 38th Conference on Very Large Data Bases (VLDB), Istanbul, Turkey, 2012/08 (pdf)

• Efficient Event Pattern Matching with Match Windows
  Bruno Cadonna, Johann Gamper, Michael Böhlen
  Proceedings of the 18th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD-12), Beijing, China, 2012/08

• Foundations of Traversal Based Query Execution over Linked Data
  Olaf Hartig, Johann-Christoph Freytag
  Proceedings of the 23rd ACM Conference on Hypertext and Social Media (HT), Semantic Data Track, Milwaukee, WI, USA, 2012/06 (pdf)

• SPARQL for a Web of Linked Data: Semantics and Computability
  Olaf Hartig
  Proceedings of the 9th Extended Semantic Web Conference (ESWC), Heraklion, Greece, 2012/05 (pdf)

• Towards Interoperable Provenance Publication on the Linked Data Web
  Jun Zhao, Olaf Hartig
  Proceedings of the 5th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Lyon, France, 2012/04 (pdf)

• Privacy Analysis using Ontologies
  Martin Kost, Johann-Christoph Freytag
  Proceedings of the Second ACM Conference on Data and Application Security and Privacy, San Antonio, TX, USA, 2012/02 (pdf)

2011

• Privacy Verification using Ontologies
  Martin Kost, Johann-Christoph Freytag, Frank Kargl, Antonio Kung
  Proceedings of the First International Workshop on Privacy by Design at the ARES 2011 Conference, Vienna, Austria, 2011/08 (pdf)

• Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution
  Olaf Hartig
  Proceedings of the 8th Extended Semantic Web Conference (ESWC), Heraklion, Greece, 2011/06 (pdf)

• A Main Memory Index Structure to Query Linked Data
  Olaf Hartig and Frank Huber
  Proceedings of the 4th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Hyderabad, India, 2011/03 (pdf)

• How Caching Improves Efficiency and Result Completeness for Querying Linked Data
  Olaf Hartig
  Proceedings of the 4th Linked Data on the Web (LDOW) Workshop at the World Wide Web Conference (WWW), Hyderabad, India, 2011/03 (pdf)

• Sequenced Event Set Pattern Matching
  Bruno Cadonna, Johann Gamper, Michael Böhlen
  Proceedings of the 14th International Conference on Extending Database Technology (EDBT-11), Uppsala, Sweden, 2011/03

2010

• A Database Perspective on Consuming Linked Data on the Web
  Olaf Hartig, Andreas Langegger
  Datenbankspektrum, Semantic Web Special Issue, 2010/09 (link)

• Towards a Data-Centric Notion of Trust in the Semantic Web (A Position Statement)
  Olaf Hartig
  Proceedings of the 2nd Workshop on Trust and Privacy on the Social and Semantic Web (SPOT) at the 7th Extended Semantic Web Conference (ESWC), Herakli, 2010/06 (pdf)

• Publishing and Consuming Provenance Metadata on the Web of Linked Data
  Olaf Hartig, Jun Zhao
  Proceedings of the 3rd International Provenance and Annotation Workshop (IPAW), Troy, New York, USA, 2010/06 (pdf)

• SWRL-based Access Policies for Linked Data
  Hannes Mühleisen, Martin Kost, and Johann-Christoph Freytag
  2nd Workshop on Trust and Privacy on the Social and Semantic Web (SPOT2010), 2010/03 (pdf)

2009

• Flexible Failure Handling for Cooperative Processes in Distributed Systems
  Artin Avanes, Johann-Christoph Freytag
  Proceedings of the 5th IEEE Conference on Collaborative Computing: Networking, Applications and Worksharing (CollaborateCom), Washington, D.C., USA, 2009/11

• Executing SPARQL Queries over the Web of Linked Data (Abstract)
  Olaf Hartig, Christian Bizer, Johann-Christoph Freytag
  Proceedings of the 8th International Semantic Web Conference (ISWC'09), Washington, DC, USA, 2009/10 (pdf)

• Using Web Data Provenance for Quality Assessment
  Olaf Hartig, Jun Zhao
  Proceedings of the 1st International Workshop on the Role of Semantic Web in Provenance Management (SWPM) at the International Semantic Web Conference, 2009/10 (pdf)

• Query Processing on Multi-Core Architectures
  Frank Huber, Johann-Christoph Freytag
  PhD Forum of the 26th British National Conference on Databases (BNCOD) 2009, Birmingham, 2009/07, 2009/07

• Querying Trust in RDF Data with tSPARQL (Abstract)
  Olaf Hartig
  Proceedings of the 6th European Semantic Web Conference (ESWC), Heraklion, Greece; (Best Paper Award), 2009/06 (pdf)

• Linked Data for Building a Map of Researchers (Scripting Challenge Submission)
  Olaf Hartig, Hannes Mühleisen, Johann-Christoph Freytag
  Proceedings of the 5th Workshop on Scripting for the Semantic Web (SFSW) at the European Semantic Web Conference (ESWC), Heraklion, Greece, 2009/06 (pdf)

• Query Processing on Multi-Core Architectures
  Frank Huber, Johann-Christoph Freytag
  Proceedings of the 21. GI-Workshop on Foundations of Databases (Grundlagen von Datenbanken), Rostock-Warnemünde, Mecklenburg-Vorpommern, Germany, June, 2009/06

• Provenance Information in the Web of Data
  Olaf Hartig
  Proceedings of the Linked Data on the Web (LDOW'09) Workshop at the World Wide Web Conference (WWW), Madrid, Spain, 2009/04 (pdf)

2008

• Automatic Component Selection with Semantic Technologies
  Olaf Hartig, Martin Kost, Johann-Christoph Freytag
  Proceedings of the 4th International Workshop on Semantic Web Enabled Software Engineering (SWESE) at ISWC, Karlsruhe, Germany, 2008/10 (pdf)

• Trustworthiness of Data on the Web
  Olaf Hartig
  Proceedings of the STI Berlin & CSW PhD Workshop, Berlin, Germany, 2008/09 (pdf)

• Adaptive Workflow Scheduling Under Resource Allocation Constraints and Network Dynamics (Abstract)
  Artin Avanes, Johann-Christoph Freytag
  Proceedings of the 34th International Conference on Very Large Data Bases (VLDB), pages 1631-1637, Auckland, New Zealand, 2008/08

• An Adaptive Process and Data Infrastructure for Disaster Management (Abstract)
  Artin Avanes
  The 5th International Conference on Information Systems for Crisis Response and Management (ISCRAM), Phd Colloquium, Washington,D.C. USA, 2008/05

• Enhanced Information Retrieval from Narrative German-language Clinical Text Documents using Automated Document Classification
  Stephan Spat, Bruno Cadonna, Ivo Rakovac, Christian Gütl, Hubert Leitner, Günther Stark, Peter Beck
  Proceedings of the 21st International Congress of the European Federation for Medical Informatics (MIE-05), Göteborg, Sweden, 2008/05

• An Architecture for Emergent Semantics
  Sven Herschel, Ralf Heese, Jens Bleiholder, and Christian Czekay
  LNCS Journal on Data Semantics, to appear, 2008

2007

• XML-Tage in Berlin 2007
  Robert Tolksdorf, Johann-Christoph Freytag (Hrsg.)
  Proceedings, 24.-26. September 2007, Berlin, Germany, 2007/09 (link)

• Distributed Service Deployment in Mobile Ad-Hoc Networks (Abstract)
  Artin Avanes, Johann-Christoph Freytag, Christof Bornhövd
  Proceedings of the 4th IEEE Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous), pages 1-8, Philadelphia, US, 2007/08

• Efficient Exploitation of Similar Subexpressions for Query Processing (Abstract)
  Jingren Zhou, Paul Larson, Johann-Christoph Freytag, Wolfgang Lehner
  Proceedings of ACM SIGMOD, 2007/06

• The SPARQL Query Graph Model for Query Optimization (Abstract)
  Olaf Hartig, Ralf Heese
  Proceedings of the 4th European Semantic Web Conference, Autria, 2007/06

• Entwurf von Informationsintegrationssystemen auf der Basis der Merkmalsmodellierung (Abstract)
  Susanne Busse, Johann-Christoph Freytag
  Datenbanksysteme in Business, Technologie und Web (BTW), pp. 192-211, Aachen, Germany, 2007/03

2006

• Query Graph Model for SPARQL (Abstract)
  Ralf Heese
  International Workshop on Semantic Web Applications: Theory and Practice. ER conference 2006, 2006/11

• An Architecture for Emergent Semantics (Abstract)
  Sven Herschel, Ralf Heese und Jens Bleiholder
  International Workshop on Semantic Web Applications: Theory and Practice. ER conference 2006, 2006/11

• Describing Differences between Databases
  Heiko Müller, Johann-Christoph Freytag, Ulf Leser
  ACM 15th Conference on Information and Knowledge Management (CIKM), Arlington, VA, USA, 2006, 2006/11 (pdf)

• Self-Organizing Information Systems for Disaster Management
  Timo Mika Gläßer, Markus Scheidgen, Artin Avanes
  3. GI/ITG KuVS Fachgespräch "Ortsbezogene Anwendungen und Dienste", Berlin, Germany, 2006/09 (pdf)

• XML-Tage in Berlin 2006
  Robert Tolksdorf, Rainer Eckstein (Hrsg.)
  Proceedings, 25.-27. September 2006, Berlin, Germany, 2006/09 (link)

• Informatik - Aktuelle Themen im historischen Kontext
  Wolfgang Reisig, Johann-Christoph Freytag (Editoren)
  Springer Verlag, 2006/05

• Data everywhere – Der lange Weg von Datensammlungen zu Datenbanksystemen
  Johann-Christoph Freytag
  in Informatik - Aktuelle Themen im historischen Kontext, Wolfgang Reisig und Johann-Christoph Freytag (Editoren), Springer Verlag, 2006/05

• Semantic-Web-Technologien in der Arbeitsplatzvermittlung (Abstract)
  Thorsten Falk, Ralf Heese, Christian Kaspar, Malgorzata Mochol, Daniel Pfeiffer, Michael Thygs, Robert Tolksdorf
  Zeitschrift Informatik-Spektrum, Heft 2/2006, 2006/04 (link)

• On the Distance of Databases (Abstract)
  Heiko Müller, Ulf Leser, Johann-Christoph Freytag
  HUB-IB-199, Humboldt University Berlin, March 2006, 2006/03 (pdf)

• Classification of Contradiction Patterns
  Heiko Müller, Ulf Leser, Johann-Christoph Freytag
  30th Annual Conference of the German Classification Society (GfKl), Berlin, 2006, 2006/03 (pdf)

• Privacy-Techniken im Überblick
  Oliver Berthold, Johann-Christoph Freytag
  Datenbank-Spektrum, Heft 16 (in german), 2006/02

• Semantic-Web-Technologien im Arbeitsvermittlungsprozess (Abstract)
  Robert Tolksdorf, Malgorzata Mochol, Ralf Heese, Rainer Eckstein, Radek Oldakowski, Chris Bizer
  Zeitschrift Wirtschaftsinformatik, Special Issue "Internetökonomie", S. 17-26, Heft 1/2006, 2006/01 (link)

• Semantic Web Technologies in the Recruitment Domain
  Ralf Heese, Malgorzata Mochol, Radoslaw Oldakowski
  In Miguel-Angel Sicilia (Edt.): Competencies in Organizational E-Learning: Concepts and Tools, 2006

2005

• RFID Verbraucherängste und Verbraucherschutz
  Oliver Berthold, Oliver Günther, Sarah Spiekermann
  Zeitschrift Wirtschaftsinformatik, Heft 6/2005, Vieweg Verlag, Wiesbaden, 2005/12

• Erkennen und Bereinigen von Datenfehlern in naturwissenschaftlichen Daten
  Heiko Müller, Melanie Weis, Jens Bleiholder, Ulf Leser
  Datenbank-Spektrum, Heft 15, November 2005, 26-35 (in german), 2005/11 (pdf)

• Berliner XML-Tage 2005
  Rainer Eckstein, Robert Tolksdorf (Hrsg.)
  Proceedings, 12.-14.September 2005, Berlin, Germany, 2005/09 (link)

• Indexing Dynamic Networks
  Sven Herschel
  INFORMATIK 2005 - Informatik LIVE! Band 1, Beiträge der 35. GI-Jahrestagung, Bonn, 19. bis 22. September 2005, 2005/09 (pdf)

• The Query Web: Reliable Indexing in Dynamic Networks
  Sven Herschel
  Proceedings of the VLDB 2005 Ph.D. workshop, August 2005, Trondheim, Norway, 2005/08 (pdf)

• Ein Data-Quality-Wettbewerb
  Michael Mielke, Heiko Müller, Felix Naumann
  Datenbank-Spektrum, Heft 14, August 2005, 34-37 (in german), 2005/08

• Integrating XML based Life Sciences Data Using UML (Abstract)
  Rainer Eckstein, Stephan Heymann, Alexander Grünewald
  International Workshop Integrative Bioinformatics, Bielefeld, 2005/07

• Semantic Query Transformation Using Ontologies
  Chokri Ben Necib, Johann-Christoph Freytag
  Proceedings of the 9th International Database Applications and Engineering Symposium (IDEAS'05). Monteral, Cananda, 2005/07 (pdf)

• Humboldt Discoverer: A semantic P2P index for PDMS (Abstract)
  Sven Herschel, Ralf Heese
  Proceedings of the International Workshop Data Integration and the Semantic Web, Porto, Portugal, 2005/06 (pdf)

• Query Processing Using Ontologies
  Chokri Ben Necib, Johann-Christoph Freytag
  Proceedings of the 17th Conference on Advanced Information Systems Engineering (CAISE'05), Porto, Portugal, 2005/06 (pdf)

• Datenschutzgerechte RFID-Technologie
  Oliver Berthold
  GI Jahrestagung Sicherheit 2005, 5. - 8. April 2005, Regensburg, 2005/04 (pdf)

• Self-Extending Peer Data Management (Abstract)
  Ralf Heese, Sven Herschel, Felix Naumann, Armin Roth
  Datenbanksysteme in Business, Technologie und Web (BTW), Karlsruhe, Germany, 2005/03 (pdf)

• Columba: An Integrated Database of Proteins, Structures, and Annotations
  Kristian Rother, Silke Trißl , Heiko Müller, Thomas Steinke, Ina Koch, Robert Preissner, Cornelius Frömmel, Ulf Leser
  BMC Bioinformatics März 2005, 6(1):81, 2005/03 (pdf) (link)

• Enhancing the Semantics of Links and Paths in Life Science Sources
  Louiqa Raschid, Stephan Heymann, Felix Naumann, Peter Rieger, George Mihaila, Maria Esther Vidal, Adam Lee, Yao Wu, Alex Lash
  Workshop on Database Issues in Biological Databases (DBiBD), Edinburgh, 2005/01 (pdf)

• Effizienter unbeobachtbarer Datenbankzugriff
  Oliver Berthold
  In: Ferstl, O. K.; Sinz, E. J.; Eckert, S.; Isselhorst, T. (Hrsg.), Wirtschaftsinformatik 2005: eEconomy, eGovernment, eSociety. Heidelberg, Physica-V, 2005 (pdf)

• The Impact of Semantic Web Technologies on Job Recruitment Processes (Abstract)
  Christian Bizer, Ralf Heese, Malgorzata Mochol, Radoslaw Oldakowski, Robert Tolksdorf, Rainer Eckstein
  Tagungsband der 7. Internationale Tagung Wirtschaftsinformatik, Bamberg, Germany, 2005 (pdf)

2004

• Kurz erklärt: Privacy
  Oliver Berthold, Johann-Christoph Freytag
  Datenbank-Spektrum, Heft 11, November 2004, pp. 41-44 (in german), 2004/11 (pdf)

• Berliner XML-Tage 2004
  Robert Tolksdorf, Rainer Eckstein (Hrsg.)
  Proceedings, Berlin, Germany, 2004/10 (link)

• Completeness of integrated information sources
  Felix Naumann, Johann Christoph Freytag, Ulf Leser
  Information Systems 29 (7), 583-615, 2004/10 (pdf)

• Using Ontologies for Database Query Reformulation
  Chokri Ben Necib, Johann-Christoph Freytag
  Proceedings of the 18th Conference on Advances in Databases and Information Systems (ADBIS'04), Budapest, Hungary, 2004/09 (pdf)

• Datenbankgestützte Wissensakquisition in den Lebenswissenschaften
  P. Rieger, S. Heymann, H. Müller
  Datenbank-Spektrum, Heft 10, August 2004, pp. 14-21 (in german), 2004/08 (pdf)

• Anfragenbasierte Datenreplikation in Peer-to-Peer-Netzen
  Sven Herschel
  Tagungsband zum 16. GI-Workshop Grundlagen von Datenbanken, Mohnheim, 1.-4. Juni 2004., 2004/06 (pdf)

• Trustable B2C Markets on the Semantic Web (Abstract)
  R. Tolksdorf, C. Bizer, R. Eckstein, R. Heese
  Journal on Computer Systems Science & Engineering (CSSE), Vol.19, No. 3, 2004/05

• Ad hoc Interfaces for Querying Genomic Data
  P. Rieger, S. Heymann
  BCB Knotentreffen, Berlin-Adlershof, 21.04.2004, 2004/04 (pdf)

• Efficient Prediction of Alternative Spliceforms Using Protein Domain Homology
  M. Hiller, R. Backofen, S. Heymann, A. Busch, T. Gläßer, J.C. Freytag
  In Silico Biol. 4, 0017, 2004 (link)

• Dynamic information fusion for genome annotation
  Heiko Müller, Peter Rieger, Katja Tham, Johann-Christoph Freytag
  Informatik 2004 Workshop über Dynamische Informationsfusion, Ulm, Germany, 2004 (pdf)

• Mining for Patterns in Contradictory Data
  Heiko Müller, Ulf Leser, Johann-Christoph Freytag
  Proceedings of the SIGMOD International Workshop on Information Quality for Information Systems (IQIS'04), Paris, France, 2004 (pdf)

• Ontology based Recruitment Processes (Abstract)
  Malgorzata Mochol, Radoslaw Oldakowski, Ralf Heese
  Informatik 2004 Workshop über Semantische Technologien für Informationsportale, Ulm, Germany, 2004 (pdf)

• Neue Konzepte für RDF Managementsysteme
  Ralf Heese
  Workshop über Grundlagen von Datenbanken, Monheim, Germany, 2004 (pdf)

• COLUMBA: Multidimensional Data Integration of Protein Annotations
  Kristian Rother, Heiko Müller, Silke Trissl, Ina Koch, Thomas Steinke, Robert Preissner, Cornelius Frömmel, Ulf Leser
  International Workshop on Data Integration in Life Sciences (DILS 2004), Leipzig, Germany, 2004 (pdf)

• Maintaining privacy in RFID enabled environments - Proposal for a disable-model
  Oliver Berthold, Sarah Spiekermann
  SPPC: Workshop on Security and Privacy in Pervasive Computing, The First Workshop on Security and Privacy, Conference on Pervasive Computing, 2004, Vi, 2004 (pdf)

• Conceptual Modeling XML Schemata Using UML
  Rainer Eckstein, Silke Eckstein
  Proc. of the 16th International Conference on Advanced Information Systems Engineering, CAiSE 2004, Riga, Lettland, 2004

2003

• Business to Consumer Markets on the Semantic Web (Abstract)
  Robert Tolksdorf, Christian Bizer, Rainer Eckstein, Ralf Heese
  Proc. of OTM 2003 Workshops, Lecture Notes in Computer Science, Volume 2889, S. 816-828, Catania, Italy, 2003/11 (pdf)

• Ontology based Query Processing in Database Management Systems
  Chokri Ben Necib, Johann-Christoph Freytag
  Proc. of the International Conference on Ontologies, Databases and Applications of SEmantics (ODBASE'03) Catania, Italy, 2003/11 (pdf)

• Semantic Data Cleansing in Genome Databases
  Heiko Müller
  Proc. of the VLDB 2003 PhD Workshop, Berlin, Germany, September 12-13, 2003, 2003/11

• XML und Datenmodellierung - XML-Schema und RDF zur Modellierung von Daten und Metadaten einsetzen
  Rainer Eckstein, Silke Eckstein
  dpunkt.Verlag, Heidelberg, 2003/11

• XML Technologien für das Semantic Web - XSW 2003
  Rainer Eckstein, Robert Tolksdorf (Hrsg.)
  Tagungsband der Berliner XML Tage, 13.-15. Oktober 2003, an der Humboldt-Universität zu Berlin. ISBN 3-88579-116-1. Seiten 27 bis 135, 2003/10 (link)

• Data Quality in Genome Databases
  Heiko Müller, Felix Naumann, Johann-Christoph Freytag
  Proceedings of the Conference on Information Quality (IQ 03), Boston, 2003/10 (pdf)

• Berliner XML Tage 2003
  Robert Tolksdorf, Rainer Eckstein
  Proceedings zur Konferenz, 13.-15. Oktober 2003, Humboldt-Universität zu Berlin, 2003/10

• VLDB 2003, Proceedings of 29th International Conference on Very Large Data Bases
  Johann Christoph Freytag, Peter C. Lockemann, Serge Abiteboul, Michael J. Carey, Patricia G. Selinger, Andreas Heuer
  Morgan Kaufmann 2003, Proceedings zur Konferenz, Berlin, Germany, 2003/09

• Semantic Web and Data Bases 2003
  Isabel Cruz, Vipul Kashyap, Stefan Decker, Rainer Eckstein
  Proceedings zum Workshop, 7.-8. September 2003, an der Humboldt-Universität zu Berlin (Nur auf CD erhältlich), 2003/09

• Data & Process Integration and Alternative Splicing
  J.C. Freytag, S. Heymann
  BCB-Seminar, Berlin, 30.6.2003, 2003/06 (pdf)

• Querying Databases Privately
  Dmitri Asonov
  Doctoral dissertation, submitted on March 10-th, 2003, Humboldt University Berlin, 2003/03

• XML Technologien für Middleware - Middleware für XML-Anwendungen - XMIDX 2003
  Rainer Eckstein, Robert Tolksdorf (Hrsg.)
  Proceedings zum Workshop, 17.-18. Februar 2003, an der Freien Universität Berlin. GI-Edition, Lecture Notes in Informatics (LNI), 2003/02 (link)

• Rechnergestützte Suche nach Korrelationen in komplexen Datensätzen der Biowissenschaften
  Stephan Heymann, Katja Tham, Peter Rieger
  BTW2003 - Datenbanksysteme für Business, Technologie und Web, Leipzig, Germany, February 26-28, 2003, 2003/02 (pdf)

• Integration molekularbiologischer Daten
  Ulf Leser, Peter Rieger
  Datenbank-Spektrum, Heft 6, 2003, pp. 56-66 (in german), 2003 (pdf)

• Goya - Vom Programmierwettbeweb zum Verwaltungssystem
  Sven Herschel
  Lecture Notes in Informatics - Proceedings, Volume P-35, 2003 (pdf)

• Problems, Methods, and Challenges in Comprehensive Data Cleansing
  Heiko Müller, Johann-Christoph Freytag
  HUB-IB-164, Humboldt University Berlin, 2003 (pdf)

• Alternative Spleißformen auf dem Prüfstand
  S. Heymann
  Festvortrag zur Verleihung des IBM Faculty Awards 2003 an Prof. J.-C. Freytag, 2003 (pdf)

2002

• Repudiative Information Retrieval
  Dmitri Asonov, Johann-Christoph Freytag
  Pre- and Postproceedings of the First ACM Workshop on Privacy in the Electronic Society (WPES2002) Washington DC, USA, 2002/11 (pdf)

• Access Support Tree and TextArray: A Data Structure for XML Document Storage and Retrieval
  Dieter Scheffner, Johann-Christoph Freytag
  Proceedings of the 14th International Conference on Scientific and Statistical Database Management Edinburgh, 2002/07 (pdf) (ps)

• XML Technologien für das Semantic Web - XSW 2002
  Robert Tolksdorf, Rainer Eckstein (Hrsg.)
  Proceedings zum Workshop, 24.-25.Juni 2002, an der Humboldt-Universität zu Berlin. GI-Edition, Lecture Notes in Informatics (LNI) P-14, 2002/06 (link)

• The XML Query Execution Engine (XEE)
  Dieter Scheffner, Johann-Christoph Freytag
  Proceedings of the Baltic Conference, BalticDB&IS 2002, Volume 1, pp. 297-308, 3.-6. June 2002, Institute of Cybernetics at Tallinn Technical Universi, 2002/06 (pdf) (ps)

• Private Information Retrieval, Optimal for Users and Secure Coprocessors
  Dmitri Asonov, Johann-Christoph Freytag
  HUB-IB-159, 2002/05 (ps)

• The XML Query Execution Engine
  Dieter Scheffner, Johann-Christoph Freytag
  HUB-IB-158, 2002/05 (pdf) (ps)

• Konzeptionelle Modellierung von XML-Dokumenttypen
  Dr. Rainer Eckstein
  Vorträge zum Tag der Informatik 2002, 2002/05 (pdf)

• Wenige Gene - umso mehr Proteine
  Dr. Stephan Heymann
  Vorträge zum Tag der Informatik 2002, 2002/05 (pdf)

• XEE - XML Query Execution Engine
  Dieter Scheffner
  Vorträge zum Tag der Informatik 2002, 2002/05 (pdf)

• Almost Optimal Private Information Retrieval
  Dmitri Asonov, Johann-Christoph Freytag
  Pre- and Postproceedings of the 2nd Workshop on Privacy Enhancing Technologies (PET2002) San Francisco, USA, 2002/04 (pdf)

• Top-Down Data Integration by Visualization
  Stephan Heymann
  Workshop on Databases and Data Integration in Genome Research, Berlin, Germany, 2002/02 (ppt)

2001

• Access Support Tree & TextArray: Data Structures for XML Document Storage
  Dieter Scheffner
  HUB-IB-157, 2001/12 (pdf) (ps)

• Almost Optimal Private Information Retrieval
  Dmitri Asonov, Johann-Christoph Freytag
  HUB-IB-156, 2001/11 (ps)

• Data Cleansing for Genome Data
  Heiko Müller
  Presentation at the BCB-Meeting, 2001/11 (pdf)

• Absolute Privacy in Voting
  Dmitri Asonov, Markus Schaal, Johann-Christoph Freytag
  Proceedings of the Information Security Conference (ISC'01) Malaga, Spain, 2001/10 (pdf)

• Absolute Privacy in Voting
  Dmitri Asonov, Markus Schaal, Johann-Christoph Freytag
  Proceedings of the 4th Information Security Conference (ISC'01), Malaga, Spain, October 2001, 2001/10

• E-Commerce: Systemunterstützung für den Umgang mit Daten und Prozessen in vernetzten Anwendungsumgebungen
  Winfried Lamersdorf, Johann-Christoph Freytag, Rainer Conrad (Hrsg.)
  Tagungsband der GI/OCG-Jahrestagung, 25.- 28. September 2001, Universität Wien, Seiten 861 - 935, 2001/09 (link)

• Private Information Retrieval - An overview and current trends
  Dmitri Asonov
  Tagungsband der GI/OCG-Jahrestagung, 25.- 28. September 2001, Universität Wien, 2001/09 (pdf)

• Access Support Tree & TextArray: A Model for Physical Storage of XML Documents
  Dieter Scheffner, Rainer Conrad
  Tagungsband der GI/OCG-Jahrestagung, 25.- 28. September 2001 Universität Wien, 2001/09 (pdf)

• Aspects of Data Cleansing in Biological Databases
  Heiko Müller
  Workshop of the Berlin-Brandenburg Graduate School on Distributed Information Systems, 2001/05 (pdf)

• Biological Sequences Integrated: A Relational Approach
  André Bergholz, Stefan Heymann, Jörg A. Schenk, Johann-Christoph Freytag
  Acta Biotheoretica (2001), Volume 49, No 3, pp 145-159, 2001

2000

• Quality-driven Integration of Heterogeneous Information Sources
  J.-C. Freytag, F. Naumann, U. Leser
  Presented at IBM Böblingen, December 2000, 2000/12 (pdf)

• Assessment Methods for Information Quality Criteria
  Felix Naumann, Claudia Rolker
  Proceedings of the Conference on Information Quality (IQ 00), Boston, 2000/10 (pdf) (ps)

• A Communication Infrastructure for a Distributed RDBMS
  Michael Stillger, Dieter Scheffner, Johann-Christoph Freytag
  Proceedings of the European Conference on Parallel Computing (Euro-Par 2000) München, 2000/08 (pdf) (ps)

• Implementing Geospatial Operations in an Object-Relational Database System
  Johann Christoph Freytag, Miroslav Flasza, Michael Stillger
  Proceedings of the 12th International Conference on Scientific and Statistical Database Management Berlin, 2000/07 (pdf) (ps)

• Assessment Methods for Information Quality Criteria
  Felix Naumann, Claudia Rolker
  HUB-IB-138, 2000/06 (ps)

• A Communication Infrastructure for a Distributed RDBMS
  Michael Stillger, Dieter Scheffner, Johann-Christoph Freytag
  HUB-IB-137, 2000/06 (ps)

• Integration biologischer Sequenzdaten zum Aufbau eines Genome Warehouses
  Andre Bergholz, Johann-Christoph Freytag
  "Informationssysteme in der Biotechnologie" Workshop der GI-FG 4.0.2 Informatik in den Biowissenschaften, Otto-von-Guericke-Universität Magdeburg, Mag, 2000/02 (pdf) (ps)

• Completeness of Information Sources
  Felix Naumann, Johann-Christoph Freytag
  HUB-IB-135, 2000/02 (ps)

• Cooperative Query Answering with Density Scores
  Felix Naumann, Ulf Leser
  Proceedings of the Conference on Management of Data (COMAD 00), Pune, India, to appear, 2000 (pdf) (ps)

• XML Conceptual Modelling using UML
  Rainer Conrad, Dieter Scheffner, J. Christoph Freytag
  Proceedings of the 19th International Conference on Conceptual Modeling, ER 2000, Salt Lake City, Utah, USA, 2000 (pdf) (ps)

• Query Planning with Information Quality Bounds
  Ulf Leser, Felix Naumann
  Proceedings of the International Conference on Flexible Query Answering Systems (FQAS), Warsaw, Poland, 2000 (pdf) (ps)

• Approximate Tree Embedding for Querying XML Data
  Torsten Schlieder, Felix Naumann
  Proceedings of the ACM SIGIR Workshop on XML and Information Retrieval, Athens, Greece, 2000

• Building the Genome Warehouse
  J.-C. Freytag
  Presented 2000, 2000 (pdf)

1999

• Density Scores for Cooperative Query Answering
  Felix Naumann, Ulf Leser
  Proceedings of the 4th Workshop "Föderierte Datenbanken", Berlin, 1999/11 (ps)

• Konzeptionelle Modellierung von XML für die Integration
  Rainer Conrad, Dieter Scheffner
  Proceedings of the 4th Workshop "Föderierte Datenbanken", Berlin, 1999/11 (pdf) (ps)

• Do Metadata Models Meet IQ Requirements?
  Felix Naumann, Claudia Rolker
  Proceedings of the Conference on Information Quality (IQ 99) Boston, 1999/10 (pdf) (ps)

• Querying Semistructured Data based on Schema Matching
  Bergholz, A., Freytag, J. C.
  Proceedings of the International Workshop on Database Programming Languages (DBPL, in conjunction with VLDB'99), Kinloch Rannoch, 1999/09 (pdf) (ps)

• Rich Schemata for Semistructured Data: Thesis Proposal
  Bergholz, A.
  Conference on Advanced Information Systems Engineering (CAiSE*99) 6th Doctoral Consortium, Heidelberg, 1999/06 (pdf) (ps)

• Quality-driven Integration of Heterogeneous Information Systems
  Felix Naumann, Ulf Leser, Johann-Christoph Freytag
  HUB-IB-117, 1999/02 (ps)

• Matching Schemata by utilizing Constraint Satisfaction Techniques
  Bergholz, A., Freytag, J. C.
  Proceedings of the Workshop on Query Processing for Semistructured Data and Non-Standard Data Formats (in conjunction with ICDT'99), Jerusalem, 1999/01 (pdf)

• Quality-driven Integration of Heterogeneous Information Sources
  Felix Naumann, Ulf Leser, Johann Christoph Freytag
  Proceedings of the International Conference on Very Large Databases (VLDB 99) Edinburgh, 1999 (pdf) (ps)

1998

• Three-Layer Approach to Semistructured Data
  Bergholz, A., Freytag, J. C.
  6th International Workshop on Theory and Application of Graph Transformations (TAGT), Paderborn, 1998/11 (pdf) (ps)

• Data Fusion and Data Quality
  Felix Naumann
  Proc. of the New Techniques and Technologies for Statistics Seminar (NTTS 98) Sorrent, Italy, 1998/11 (ps)

• Quality-driven Source Selection using Data Envelopment Analysis
  Felix Naumann, Johann Christoph Freytag, Myra Spiliopoulou
  Proc. of the International Conference on Information Quality (IQ 98) MIT, Cambridge, 1998/10 (pdf)

1997

• In Quest of the Bottleneck - Monitoring Parallel Database Systems
  Stefan Manegold, Florian Waas, Daniel Gudlat
  Proc. PVM-MPI'97 Krakow, Poland, 1997/11 (pdf) (ps)

• Parallel Event Detection in Active Database Systems - The Heart of the Matter
  Ulrike Jaeger, Johann K. Obermaier
  Proc. Int'l Workshop on Active, Real-Time and Temporal Databases ARTDB'97, Como, Italy, 1997/09 (pdf) (ps)

• Sequence comparison using a relational database approach´
  Bergholz, A., Heymann, S., Schenk, J. A.
  Proceedings of the International Database Engineering and Applications Symposium (IDEAS) Montreal, 1997/08 (pdf) (ps)

• Load Balanced Query Evaluation in Shared-Everything Environments
  Stefan Manegold, Johann K. Obermaier, Florian Waas
  Proc. Euro-Par'97 Workshop 18 Passau, 1997/08 (pdf) (ps)

• AQuES: An Agent-based Query Evaluation System
  Michael Stillger, Johann K. Obermaier, Johann-Christoph Freytag
  Proc. Int'l. Conf. on Cooperativ Information Systems, Charleston, SC, USA, 1997/06 (ps)

• AQuES: An Agent-based Query Evaluation System
  Michael Stillger, Johann K. Obermaier, Johann-Christoph Freytag
  HUB-IB-81, 1997/03

• Flexible Anfrageoptimierung in parallelen Datenbanksystemen (Arbeitspapier)
  Stefan Manegold, Johann K. Obermaier, Florian Waas
  HUB -IB-80, 1997/02

1996

• Dynamic Aspects of Query Processing in Parallel Database Systems
  Johann K. Obermaier, Florian Waas
  Proc. 6th Int'l Workshop on Information Technologies and Systems WITS Cleveland, Ohio, 1996/12 (pdf) (ps)

• Parallel Event Detection in Active Databases: The Heart of the Matter
  Ulrike Jaeger, Johann K. Obermaier
  HUB-IB-72, 1996/09 (ps)

• Load Balanced Query Evaluation in Shared-Everything Environments (Extended Version)
  Stefan Manegold, Johann K. Obermaier, Florian Waas
  HUB-IB-70, 1996/09 (ps)

• Modelling Resource Utilization in Pipelined Query Execution
  Myra Spiliopoulou, Johann-Christoph Freytag
  Proc. Euro-Par'96 Workshop 22 Lyon, 1996/08 (ps)

• Einsatz objektorientierter Datenbanksysteme in geographischen Informationssystemen
  Johann-Christoph Freytag
  Proc. 50. Deutscher Geographentag Potsdam, (published in "Karlruher Geoinformatik Report", 1/96, Special Issue (Sonderheft)), 1996/08 (pdf) (ps)

• Genetic Programming in Database Query Optimization
  Michael Stillger, Myra Spiliopoulou
  Proc. 1st Annual Conference on Genetic Programming, Stanford, 1996/07 (ps)

• Parallel Query Optimization: Exploiting Bushy and Pipeline Parallelism with Genetic Programs
  Michael Stillger, Myra Spiliopoulou, Johann-Christoph Freytag
  HUB-IB-65, 1996/06 (ps)

• Load Balanced Query Evaluation in Shared-Everything Environments
  Stefan Manegold, Johann K. Obermaier, Florian Waas, Johann-Christoph Freytag
  HUB-IB-61, 1996/05 (ps)

• Data Threaded Query Evaluation in Shared-Everything Environments
  Stefan Manegold, Johann K. Obermaier, Florian Waas, Johann-Christoph Freytag
  HUB-IB-58, 1996/05 (ps)

1995

• SMILE - A Framework for Lossless Situation Detection
  Ulrike Jaeger
  Proc. 5th Int'l. Workshop on Information Technologies and Systems WITS Amsterdam, 1995/12 (pdf) (ps)

• Modelling the Dynamic Evolution of System Workload During Pipelined Query Execution
  Myra Spiliopoulou, Johann-Christoph Freytag
  HUB-IB-54, 1995/12 (ps)

• Testing the Quality of a Query Optimizer
  Michael Stillger, Johann-Christoph Freytag
  Bulletin of the Technical Committee on Data Engineering, Vol.18, No.3, Washington D.C., 1995/09 (ps)

• An Annotated Bibliography on Active Databases
  Ulrike Jaeger, Johann-Christoph Freytag
  SIGMOD Records Vol.24, No.1, 1995/03 (ps)

• Annotated Bibliography on Active Databases (Complete and updated version of December 1996)
  Ulrike Jaeger, Johann-Christoph Freytag
  HUB-IB-41, 1995/01 (ps)

1994

• Effiziente Situationserkennung
  Ulrike Jaeger
  GI Datenbankfachgespräch, Hamburg,also appeared in GI Datenbank-Rundbrief, Nr.14, November 1994, 1994/08 (ps)

• Using Context Information for Efficient Situation Detection
  Ulrike Jaeger
  HUB-IB-35, 1994/08 (ps)

1989

• The Basic Principles of Query Optimization (Technical Report)
  Johann-Christoph Freytag
  Proceedings of IFIP Congress, San Francisco, CA, pp 801-807, 1989/09 (pdf)