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Dewey Summaries as Multilingual Linked Data

Dewey Summaries as Multilingual Linked Data. Dewey Breakfast/Update ALA Annual July 11, 2009. Linked Data principles. Three rules Use http-URIs as names for things (identification) When someone looks up a URI, provide useful information (dereferenceability)

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Dewey Summaries as Multilingual Linked Data

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  1. Dewey Summaries as Multilingual Linked Data • Dewey Breakfast/Update • ALA Annual • July 11, 2009

  2. Linked Data principles • Three rules • Use http-URIs as names for things (identification) • When someone looks up a URI, provide useful information (dereferenceability) • Include links to other URIs (relationships) • Maxims • “Raw data now!” (TBL) • Being able to ask new question about data • Adding information collaboratively

  3. Linked Open Data cloud

  4. Requirements for publishing Linked Data • Identification • Every data entity has a URI • Access • HTTP as protocol (established infrastructure: WWW) • User agent indicates which data formats it accepts • Representation • for machines • RDF as data model • SKOS, Dublin Core, ccREL, etc. as vocabularies • for humans • HTML, etc. • “Openness” of the data set

  5. Use Cases: Basic web lookup • “If someone has the URI of that thing, what relationships to what other objects is it useful to know about?”(Tim Berners-Lee) • A web page for every class of the Dewey Summaries, e.g.: • <http://dewey.info/class/641/>

  6. Use Cases: Basic linking • Example: Dublin Core metadata • <dc:title>Petrology.</dc:title><dc:creator>Huang, Walter Ta, 1924-</dc:creator><dc:subject xsi:type="http://purl.org/dc/terms/DDC">552</dc:subject> • Use of a link (URI) instead of arbitrary text

  7. Use Cases: Basic linking • Example: Dublin Core metadata • <dc:title>Petrology.</dc:title><dc:creator>Huang, Walter Ta, 1924-</dc:creator><dc:subject rdf:resource="http://dewey.info/class/552/e16/" /> • Use of a link (URI) instead of arbitrary text

  8. Service: Dewey Summaries as Linked Data • External summaries of DDC 22 • Main Classes, Divisions, Sections • Accessible • as RDF data or HTML web pages • in 9 languages • Reusable • by anyone • under terms of Creative Commons BY-NC-ND 3.0 license

  9. Demo: Dewey Summaries as Linked Data • http://dewey.info/class/641/ • http://dewey.info/class/641/about.rdf • http://dewey.info/class/641/about.en • http://dewey.info/class/641/about.sv • http://dewey.info/class/641/2009/06/about.ar.html • http://dewey.info/class/641/2009/01/about.ar.rdf

  10. HTML view across all versions in all languages

  11. Data view across all versions in all languages

  12. HTML view of all versions in a specific language http://dewey.info/class/641/about.sv

  13. Data view of a specific version in a specific language http://dewey.info/class/641/2009/06/about.ar.rdf

  14. And it works on my BlackBerry ...

  15. Thank you! What would you like to do with this? Ideas for new use cases? Other comments, suggestions? panzerm@oclc.org

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