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Similar to How Much to Semanticize? Looking at the future of Library Data and the Semantic Web
How Much to Semanticize? Looking at the future of Library Data and the Semantic Web
- 1. Jenn Riley Metadata Librarian IndianaUniversity Digital Library Program
- 2. “The Semantic Webis not a separate Web but an extension of the current one, in which information is given well- defined meaning, better enabling computers and people to work in cooperation.” Berners-Lee, Tim, James Hendler and Ora Lassila. (May 2001). “The Semantic Web.” Scientific American 284(5).
- 3. Subject Object Predicate URI reference URI reference literalRDF Primer http://www.w3.org/TR/rdf-primer/ URI reference
- 4. Let’s say youhave these statements, all from different sources: • Dewey the dog is owned by Leslie the librarian • Leslie the librarian lives at 1234 Cutter Lane • Dogs typically live in the same home as their owners An inferencing engine can decide it’s likely that: • Dewy the dog lives at 1234 Cutter Lane
- 5. 1. Use URIsas names for things 2. Use HTTP URIs so that people can look up those names. 3. When someone looks up a URI, provide useful information, using the standards (RDF, SPARQL) 4. Include links to other URIs, so that they can discover more things. Berners-Lee, Tim. (2006). “Linked Data Design Issues.” http://www.w3.org/DesignIssues/LinkedData.html
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- 7. id.loc.gov VIAF Hungarian National Library GermanNational Library Royal Library of Sweden (at least)
- 8. DC gone offthe deep end RDF-inspired include interoperability levels
- 9. Why is itso hard for library-types to wrap our brains around all of this? The underlying model of DCAM, RDF, and the Semantic Web has some significant differences from the models we’re used to.
- 11. Walsh, Norman. (2003).“RDF Twig: Accessing RDF Graphs in XSLT.” Extreme Markup Languages Conference, 4 - 8 August, 2003, Montreal, Quebec, Canada. http://nwalsh.com/docs/articles/extreme2003/
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- 14. RDF Schema ≠XML Schema
- 15. Elements aren’t properties Rdfthinks of element “vocabularies” tho libraries think of them not like cvs
- 16. Elings, Mary W.,and Günter Waibel. (March 2007). “Metadata for All: Descriptive Standards and Metadata Sharing Across Libraries, Archives, and Museums.” First Monday 12(3). http://firstmonday.org/article/view/1628/1543
- 17. How do youknow what properties/classes have been defined so you can re-use them? Dcap’s using FRBR – no overlap v/frbr – what’s not rdf-able from xml Rda use of this stuff
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- 20. So what dowe do now? (Do we even need to do anything?) (Or are new and revised XML formats going to be enough?)
- 21. Balance building infrastructure withfacilitating production
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- 23. URIs aregood Relegating information to notes comes back to bite you Libraries are already making tentative investments in this area But… • We have trouble accepting things “not invented here” • DC 1:1 principle ran into problems in practice • Systems never evolved to handle the more functional metadata structures we planned
- 24. Blacklight/VuFind/etc. • We havemore control over these discovery systems than we’ve had, well, ever • They’re getting a lot of press, support, and funding • They can show off in concrete ways what’s possible if our data is in better shape ??????????????????????? RDA as Linked Data, RDF properties • This one I’m not so sure of
- 25. Can we defineour models deeply enough that both graph and tree renderings are possible?
- 26. Semi-formal data dictionaries UML& other formal model representations RDF & OWL representations DCAM conformance Phase 1? Phase 2? Phase 3? Minting URIs
- 27. Dcam possible changes Participatein the dcmi discussion • Push the theory towards practice Rdf/a behind web pages – show cushman? Asho? Participate in the linking open data community project?
- 28.