1. Linked Data at the NationalLinked Data at the National
Széchényi LibrarySzéchényi Library
ÁdámÁdám HorváthHorváth
NSZLNSZL
ELAG 2010 HELSINKIELAG 2010 HELSINKI
Lightning TalksLightning Talks

2. 2 Linked Data at the National Széchényi
What is on the semantic web?What is on the semantic web?
Entire online catalogue and digital library inEntire online catalogue and digital library in
RDFDCRDFDC
Name authority in FOAFName authority in FOAF
Subject term thesaurus in SKOSSubject term thesaurus in SKOS
Geographical name thesaurus in SKOSGeographical name thesaurus in SKOS

3. 3 Linked Data at the National Széchényi
Serving our information as LinkedServing our information as Linked
DataData
 RDF databaseRDF database
– JenaJena
 SPARQL endpointSPARQL endpoint
– JoJosekiseki
http://setaria.oszk.hu/joseki/query.htmlhttp://setaria.oszk.hu/joseki/query.html
SSample queryample query
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
SELECT ?s ?p ?oSELECT ?s ?p ?o
WHERE {WHERE {
?s ?p ?o .?s ?p ?o .
?s skos:prefLabel "kutya"@hu .?s skos:prefLabel "kutya"@hu .
}}

4. 4 Linked Data at the National Széchényi
Providing useful informationProviding useful information
We always provide a human readableWe always provide a human readable
version to our RDF dataversion to our RDF data

5. 5 Linked Data at the National Széchényi
DemonstrationDemonstration
Retrieving name authority dataRetrieving name authority data ((Text/html isText/html is
requestedrequested))
– The resource identifierThe resource identifier
http://http://nektar.oszk.hunektar.oszk.hu/resource/auth//resource/auth/3358933589
– An HTML page for human reading is given backAn HTML page for human reading is given back
http://nektar.oszk.hu/auth/http://nektar.oszk.hu/auth/3358933589

6. 6 Linked Data at the National Széchényi
The working modelThe working model : authority: authority
Thesaurus terms and geographical namesThesaurus terms and geographical names
(SKOS)(SKOS)
Names (FOAF)Names (FOAF)

7. 7 Linked Data at the National Széchényi
DemonstrationDemonstration
Retrieving name authority dataRetrieving name authority data
((application/rdf+xml is acceptedapplication/rdf+xml is accepted))
– The resource identifierThe resource identifier
http://http://nektar.oszk.hunektar.oszk.hu/resource/auth//resource/auth/3358933589
– The RDF XML document is given backThe RDF XML document is given back
http://nektar.oszk.hu/http://nektar.oszk.hu/datadata/auth//auth/3358933589

8. 8 Linked Data at the National Széchényi
The working modelThe working model : authority: authority
Thesaurus terms and geographical namesThesaurus terms and geographical names
(SKOS)(SKOS)
Names (FOAF)Names (FOAF)

9. 9 Linked Data at the National Széchényi
Discovering our linked data on theDiscovering our linked data on the
webweb
HTML link auto-discoveryHTML link auto-discovery
– In the header of our OPAC full view pagesIn the header of our OPAC full view pages
– <link rel="meta"<link rel="meta"
type="application/rdf+xml"type="application/rdf+xml"
title="RDF Version"title="RDF Version"
href="http://nektar.oszk.hu/data/manifestation/2645471" />href="http://nektar.oszk.hu/data/manifestation/2645471" />
 SitemapSitemap
– Robots.txtRobots.txt

10. 10 Linked Data at the National
Discovering our linked data on theDiscovering our linked data on the
webweb
Links to NSZL resourcesLinks to NSZL resources
– Link from Dublin Core to name authorityLink from Dublin Core to name authority
<dc:creator>Jókai Mór (1825-1904)</dc:creator><dc:creator>Jókai Mór (1825-1904)</dc:creator>
<dc:creator<dc:creator
rdf:resource="http://nektar.oszk.hu/resource/auth/33589"/>rdf:resource="http://nektar.oszk.hu/resource/auth/33589"/>

11. 11 Linked Data at the National
Discovering our linked data on theDiscovering our linked data on the
webweb
Links to external resourcesLinks to external resources
– Link from the authority record to DBpediaLink from the authority record to DBpedia

12. 12 Linked Data at the National
PlansPlans
Submitting our name authority to VIAFSubmitting our name authority to VIAF
Linking VIAFLinking VIAF records torecords to our FOAFour FOAF recordsrecords
Linking our FOAF records to VIAFLinking our FOAF records to VIAF recordsrecords
Enriching RDFDC with BIBO statementsEnriching RDFDC with BIBO statements
Using linked data for frbrizationUsing linked data for frbrization

13. 13 Linked Data at the National
AcAcknowlknowleeddggmentment
We followed the LIBRIS solution as much asWe followed the LIBRIS solution as much as
possible to make the future cooperation aspossible to make the future cooperation as
easy as possibleeasy as possible
We learned how to publish linked data in anWe learned how to publish linked data in an
ELAG conferenceELAG conference

14. aadam@oszk.hudam@oszk.hu
Thank youThank you
for your attentionfor your attention