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Building an editable, versionized LOD service for library data

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  • 1. Building an editable,versionized LOD service for library data May, 16th 2012 ELAG 2012, Palma de Mallorca Felix Ostrowski & Adrian Pohl
  • 2. Agenda lobid.org Fresnel Display Vocabulary for RDF Implementation Vision
  • 3. lobid.org
  • 4. Why LOD? - Motivation LOD as ideal basis for distributed cooperative cataloging Use of international and cross-domain web standards leads to  Increased discoverability  Multiple usability of one dataset  Maximized interoperability & re-usability  Flexible data model Expected ROI: Synergy effects through standardization of technology stack
  • 5. lobid.org Experimental LOD service Launched in 2010 Two subservices  lobid-organisations  lobid-resources Continuously improved
  • 6. lobid-organisations Motivation: the need of URIs for libraries RDF representations of more than 40k international organisations Data sources: German ISIL registry & MARC Organization Code database Not (yet) openly licensed
  • 7. lobid-resources lobid.resources is the LOD interface for open data from the hbz union catalog Public Domain: licensed under CC0 Currently more than 10 M records Links to other library LOD services (GND, DDC...) and to Dbpedia See also http://thedatahub.org/dataset/lobid-resources
  • 8. Problems Data is produced in legacy systems & added via dumps Data isnt up-to-date Data cant be improved in lobid.org and fed back to legacy system
  • 9. Vision: Building a service that... is based on Linked Data standards, supports producing/editing RDF, supports re-use of data from the LOD cloud, supports versioning, pushes changes (create, update, delete) in real time.
  • 10. Fresnelhttp://www.w3.org/2005/04/fresnel-info/manual/overview.gif
  • 11. Lenses:document :person a fresnel:Lens ; a fresnel:Lens ; fresnel:classLensDomain fresnel:classLensDomain bibo:Document ; foaf:Person ; fresnel:showProperties ( fresnel:showProperties ( dc:title foaf:familyname bibo:isbn foaf:givenname dc:creator ) . ) .
  • 12. Sublenses:document a fresnel:Lens ; fresnel:classLensDomain bibo:Document ; fresnel:showProperties ( dc:title bibo:isbn [ a fresnel:propertyDescription ; fresnel:property dc:creator ; fresnel:sublens :person ] ) .
  • 13. Formats[] a fresnel:Format ; fresnel:propertyFormatDomain dc:title ; fresnel:label "Title"@en .[] a fresnel:Format ; fresnel:propertyFormatDomain dc:creator ; fresnel:label "Author"@en .[] a fresnel:Format ; fresnel:propertyFormatDomain foaf:familyName ; fresnel:label "Last name"@en .[] a fresnel:Format ;
  • 14. Fresnel Abstract Box Model
  • 15. Instantiated Box Model
  • 16. Phresnel
  • 17. Phresnel Forms
  • 18. Performance issues
  • 19. An alternative: JS-based editing
  • 20. Storing data
  • 21. Vision: Cooperative cataloging in aservice-oriented libraryinfrastructure
  • 22. Building a service-oriented libraryinfrastructure Part of a grant proposal German Research Foundations infrastructure programme Aggregating and bundling descriptions in one national registry Real-time communication Easy to use Web Services
  • 23. Further information• hbz LOD blog (news around lobid.org)• Phresnel source code on github: https://github.com/lobid/PhresnelApp
  • 24. Thanks. Questions?With pleasure now/here or also later to felix.ostrowski@googlemail.com or semweb@hbz-nrw.de 32
  • 25. LicenseThese slides are published under a CreativeCommons license:http://creativecommons.org/licenses/by/3.0/de/ 33