Building an editable, versionized LOD service for library data

Presentation held by Felix Ostrowski & Adrian Pohl on May, 16th 2012 at ELAG 2012 in Palma de Mallorca.

Transcript

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
7. 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
9. 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
11. Problems  Data is produced in legacy systems & added via dumps  Data isn't up-to-date  Data can't be improved in lobid.org and fed back to legacy system
12. 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.
13. Fresnel http://www.w3.org/2005/04/fresnel-info/manual/overview.gif
14. Lenses :document a fresnel:Lens ; fresnel:classLensDomain bibo:Document ; fresnel:showProperties ( dc:title bibo:isbn dc:creator ) . :person a fresnel:Lens ; fresnel:classLensDomain foaf:Person ; fresnel:showProperties ( foaf:familyname foaf:givenname ) .
15. 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 ] ) .
16. 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 ;
17. Fresnel Abstract Box Model
18. Instantiated Box Model
19. Phresnel
21. Phresnel Forms
25. Performance issues
26. An alternative: JS-based editing
27. Storing data
28. Vision: Cooperative cataloging in a service-oriented library infrastructure
29.  Part of a grant proposal German Research Foundation's infrastructure programme  Aggregating and bundling descriptions in one national registry  Real-time communication  Easy to use Web Services Building a service-oriented library infrastructure
31. Further information • hbz LOD blog (news around lobid.org) • Phresnel source code on github: https://github.com/lobid/PhresnelApp
32. Thanks. Questions? With pleasure now/here or also later to felix.ostrowski@googlemail.com or semweb@hbz-nrw.de 32
33. License 33 These slides are published under a Creative Commons license: http://creativecommons.org/licenses/by/3.0/de/