Bibster A SemanticsBased Bibliographic PeertoPeer System

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Bibster A Semantics-Based BibliographicPeer-to-P
eer System

• Peter Haase, Steffen Staab, Rudi Studer,
• Frank van Harmelen, Michal Plechawski the
  Bibster Team
• Developers Dayat the WWW 04
• http//swap.semanticweb.org/

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Scenario

• Scenario Sharing of bibliographic metadata in a
  Peer-to-Peer network
• Bibliographic metadata is created and maintained
  in a decentralized manner
• Researchers are willing to share their data
• Use of semantics is crucial in this setting

• The Bibster system allows to
• Easily share bibliographic data
• Save work in finding this data
• Avoid re-typing this data by hand

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Bibster / SWAP System Architecture
Local Node Repository
User Interface
Query
Query Replier
Answer
Knowledge Source Integration
Message
Statements
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Semantic Methods in Bibster

• Semantic representation and querying of metadata
• Extraction and classification from e.g. BibTeX
  files
• Semantic Web Research Community Ontology andACM
  Topic hierarchy as light-weight ontologies
• Peer selection using semantic topologies
• Scalability requires intelligent query routing
• Semantic descriptions of peers expertise to
  build semantic topologies as basis for peer
  selection
• Peers with similar expertise are clustered
• Semantic duplicate detection
• Highly redundant and inconsistent representation
  of bibliographic metadata
• Semantic similarity measures to detect duplicates

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Semantic Representation of Metadata
Publication
Person
Topic
author

• SWRC as base ontology
• models domain of research
• community
• ACM Topic hierarchy
• 1287 topics from
• Computer Science Domain
• for classification of metadata

isAbout
subClass
Article
InProceedings
Misc
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Sample BibTeX Entry

• _at_ARTICLEcodd81relational,
• author Edgar F. Codd,
• title The capabilities of relational
  database management systems,
• journal IBM Research Report, San Jose,
  California,
• volume RJ3132,
• year 1981

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Sample Entry
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Demo
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Conclusion

• Download http//bibster.semanticweb.org/
• Open source (GNU public license)https//sourcefor
  ge.net/projects/bibster/
• Potential Contributions by You

• Software aspects
• User Interface
• Performance optimizations

• Research aspects
• Heterogeneous, evolving ontologies
• Alternative Query Routing

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Questions, Discussion

• SWAP project http//swap.semanticweb.org/
• Bibster subproject http//bibster.semanticweb.org
  /

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Contact

• Feel free to contact us for detailed information!
• General issuesPeter Haase
• haase_at_aifb.uni-karlsruhe.de
• Tel [phone]
• Support
• Björn Schnizler
• bjoern.schnizler_at_iw.uni-karlsruhe.de
• Tel [phone] - 83 85
• http//bibster.semanticweb.org/

University of Karlsruhe
VU Amsterdam
Empolis Poland