Linked Data at the National Linked Data at the National Széchényi LibrarySzéchényi Library

ÁdámÁdám HorváthHorváth

NSZLNSZL

ELAG 2010 HELSINKIELAG 2010 HELSINKI Lightning Talks Lightning Talks

2 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

What is on the semantic web?What is on the semantic web?

Entire online catalogue and digital library in Entire online catalogue and digital library in RDFDC RDFDC

Name authority in FOAFName authority in FOAFSubject term thesaurus in SKOSSubject term thesaurus in SKOSGeographical name thesaurus in SKOSGeographical name thesaurus in SKOS

3 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

Serving our information as Linked Serving our information as Linked DataData

RDF databaseRDF database– JenaJena

SPARQL endpoint SPARQL 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 ?oWHERE {WHERE { ?s ?p ?o .?s ?p ?o . ?s skos:prefLabel "kutya"@hu .?s skos:prefLabel "kutya"@hu . }}

4 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

Providing useful informationProviding useful information

We always provide a human readable We always provide a human readable version to our RDF dataversion to our RDF data

5 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

DemonstrationDemonstration

Retrieving name authority dataRetrieving name authority data ( (Text/html is Text/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 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

The working modelThe working model : authority : authority

Thesaurus terms and geographical names Thesaurus terms and geographical names (SKOS)(SKOS)

Names (FOAF)Names (FOAF)

7 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

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 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

The working modelThe working model : authority : authority

Thesaurus terms and geographical names Thesaurus terms and geographical names (SKOS)(SKOS)

Names (FOAF)Names (FOAF)

9 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

Discovering our linked data on the Discovering 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 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

Discovering our linked data on the Discovering 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 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

Discovering our linked data on the Discovering 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 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

PlansPlans

Submitting our name authority to VIAFSubmitting our name authority to VIAFLinking VIAF Linking VIAF records torecords to our FOAF our FOAF recordsrecordsLinking our FOAF records to VIAFLinking our FOAF records to VIAF records recordsEnriching RDFDC with BIBO statementsEnriching RDFDC with BIBO statementsUsing linked data for frbrizationUsing linked data for frbrization

13 Linked Data at the National Széchényi Library - Ádám Horváth - NSZL

AcAcknowlknowleeddggmentment

We followed the LIBRIS solution as much as We followed the LIBRIS solution as much as possible to make the future cooperation as possible to make the future cooperation as easy as possibleeasy as possible

We learned how to publish linked data in an We learned how to publish linked data in an ELAG conferenceELAG conference

aadam@oszk.hudam@oszk.hu

Thank you Thank you for your attentionfor your attention