AIFB
Bibster
Bibster
A Semantics-Based Bibliographic
Peer-to-Peer System
Peter Haase, Steffen Staab, Rudi Studer,
Frank van Harmelen, Michal Plechawski
& the Bibster Team
Developers Day
at the WWW ´04
http://swap.semanticweb.org/
Scenario
Bibster

Scenario: Sharing of bibliographic metadata in a Peer-toPeer 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
Bibster
Bibster / SWAP System Architecture
Informer
Local Node Repository
User Interface
Query
Query Replier
Knowledge Source
Integration
Answer
Communication
Adapter
Message
Statements
JXTA
Network
Bibster
Knowledge Sources
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Semantic Methods in Bibster

Semantic representation and querying of metadata


Peer selection using semantic topologies




Extraction and classification from e.g. BibTeX files
Semantic Web Research Community Ontology and
ACM Topic hierarchy as light-weight ontologies
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
Bibster

Bibster
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Bibster
Semantic Representation of Metadata
SWRC as base ontology:
models domain of research
community
Person
author
isAbout
Publication
Topic
subClass
Article
InProceedings
Information
Systems
ACM Topic hierarchy
Information Storage
1287 topics from
and Retrieval
Computer Science Domain
for classification of metadata
Information Search
and Retrieval
Database
Mgmt
Digital
Libraries
Misc
Data
Files
Database
Languages
subTopic seeAlso
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Bibster
Sample BibTeX Entry
Bibster
@ARTICLE{codd81relational,
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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Bibster
Bibster
Sample Entry
Article
Person
rdf:type
codd_81_relational
rdf:type
isAbout
author
ACMTopic/Information_Systems/
Database_Management
edgar_f_codd
firstName
lastName
Edgar
Codd
journal
year
middleName
title
1981
volume
F.
RJ3132
The capabilities of
relational database
management systems
IBM Research Report,
San Jose, California
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Bibster
Demo …
Bibster
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Bibster
Bibster
Conclusion

Download: http://bibster.semanticweb.org/

Open source (GNU public license)
https://sourceforge.net/projects/bibster/

Potential Contributions by You:
Software aspects


User Interface
Performance optimizations
Bibster


Research aspects


Heterogeneous,
evolving ontologies
Alternative Query Routing
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Bibster
Questions, Discussion
SWAP project: http://swap.semanticweb.org/
Bibster subproject: http://bibster.semanticweb.org/
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Bibster
Bibster
Contact
Feel free to contact us for detailed information!
General issues:
Peter Haase
[email protected]
Tel: +49 (0) 721 608 – 37 05
Support:
Björn Schnizler
[email protected]
Tel: +49 (0) 721 608 - 83 85
http://bibster.semanticweb.org/
Bibster
University of Karlsruhe
VU Amsterdam
Empolis Poland
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