linked open data
TRANSCRIPT
Linked Open DataLinked Open Data
HorváthHorváth Ádám ÁdámMuseum of Fine Arts, BudapestMuseum of Fine Arts, Budapest
MUZEUM@DIGIT MUZEUM@DIGIT Múzeumi Digitalizálási Konferencia Múzeumi Digitalizálási Konferencia
Budapest, 2013. június 10–11.Budapest, 2013. június 10–11.
TerminologyTerminology
Linked Open Data (LOD)Linked Open Data (LOD)Semantic webSemantic web (semweb) (semweb)Open Linked DataOpen Linked DataTThe web of Linked Open Datahe web of Linked Open Data
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
ContentContentss
Semantic web basicsSemantic web basicsWeb and semantic webWeb and semantic webAdvantages of linked dataAdvantages of linked dataCultural institutions on the semantic webCultural institutions on the semantic webSemantic data examplesSemantic data examplesSemantic searchSemantic searchHow to publish your dataHow to publish your dataMuseum of Fine Arts and the semwebMuseum of Fine Arts and the semweb
Semantic web basicsSemantic web basics
SSet of linked RDF statementset of linked RDF statementsRDFRDF– Resource Description FrameworkResource Description Framework
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
RDF statementRDF statement– Abstract exampleAbstract example• DeDeccameron’sameron’s author isauthor is BoccaccioBoccaccio• SubjectSubject PredicatePredicate ObjectObject
Rules of RDF statementRules of RDF statement– Subject, predicate must be URISubject, predicate must be URI– Object can be URI or literalObject can be URI or literal
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Concrete example (RDF/XML)Concrete example (RDF/XML)– SubjectSubject• <bibo:Document <bibo:Document
rdf:about="rdf:about="http://nektar.oszk.hu/resource/manifhttp://nektar.oszk.hu/resource/manifestation/3078548estation/3078548">">
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Concrete example (RDF/XML)Concrete example (RDF/XML)– PredicatePredicate• http://purl.org/dc/terms/creatorhttp://purl.org/dc/terms/creator
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Concrete example (RDF/XML)Concrete example (RDF/XML)– ObjectObject• http://nektar.oszk.hu/resource/auth/122083http://nektar.oszk.hu/resource/auth/122083
– This URI identifies BoccaccioThis URI identifies Boccaccio
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Concrete example (RDF/XML)Concrete example (RDF/XML)– Subject, predicate, objectSubject, predicate, object ( (full full URI)URI)<bibo:Document <bibo:Document
rdf:about="rdf:about="http://nektar.oszk.hu/resource/manifeshttp://nektar.oszk.hu/resource/manifestation/3078548tation/3078548">">
<<http://purl.org/dc/termshttp://purl.org/dc/terms/creatorcreator rdf:resource="rdf:resource="http://nektar.oszk.hu/resource/auth/http://nektar.oszk.hu/resource/auth/122083122083""/>/>
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Concrete example (RDF/XML)Concrete example (RDF/XML)– Subject, predicate, object (abbreviated URI)Subject, predicate, object (abbreviated URI)
• http://purl.org/dc/termshttp://purl.org/dc/terms/creatorcreator -> dcterms:creator -> dcterms:creator
<bibo:Document <bibo:Document rdf:about="rdf:about="http://nektar.oszk.hu/resource/http://nektar.oszk.hu/resource/manifestation/3078548manifestation/3078548">">
<dcterms:creator<dcterms:creator rdf:resource="rdf:resource="http://nektar.oszk.hu/resourchttp://nektar.oszk.hu/resource/auth/122083e/auth/122083""/>/>
<<dc:creatordc:creator>>Boccaccio, Giovanni (1313-Boccaccio, Giovanni (1313-1375)</dc:creator1375)</dc:creator>>
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Predicates of the previous pagesPredicates of the previous pages– bibo:Document bibo:Document – dcterms:creatordcterms:creator – dc:creatordc:creator
Prefixes represent element setsPrefixes represent element sets– CRMCRM
Strings after the colon are the Strings after the colon are the properties of the element setproperties of the element set
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web basicsSemantic web basics
Statements can be linked together Statements can be linked together easilyeasily– The object of a statement can be the The object of a statement can be the
subject of anothersubject of another
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Web and the semantic webWeb and the semantic web
The web links pagesThe web links pagesThe semantic web links dataThe semantic web links dataThe web is similar to a documentThe web is similar to a documentThe semantic web is similar to a databaseThe semantic web is similar to a database– RDF is the format of the databaseRDF is the format of the database– This database is independent from any applicationThis database is independent from any application
The web was created for humansThe web was created for humansThe semantic web was created for machinesThe semantic web was created for machines
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
AdvantageAdvantagess of linked data of linked data
The linked data can provide a uniform The linked data can provide a uniform access mechanismaccess mechanism– The linked data can be considered as a The linked data can be considered as a
worldwide APIworldwide API
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Advantages of linked data Advantages of linked data technology technology
There are problems that can be solved There are problems that can be solved more easily with using semantic web more easily with using semantic web technologytechnology– National Széchényi Library uses triplestore National Széchényi Library uses triplestore
and SPARQL to retrieve all editions of a and SPARQL to retrieve all editions of a certain workcertain work
– Oracle uses PROV to track changes over Oracle uses PROV to track changes over time for metadata from heterogeneous time for metadata from heterogeneous systemssystems
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web and the cultural Semantic web and the cultural institutionsinstitutions
The data of cultural institutions can be The data of cultural institutions can be shared by the means of a generally shared by the means of a generally used toolused tool
The cultural data can have a new The cultural data can have a new meaning in this environment meaning in this environment
The data of cultural institutions can be The data of cultural institutions can be transferred into RDF statements transferred into RDF statements relatively easyrelatively easy
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
The semweb and the cultural The semweb and the cultural institutionsinstitutions
The main role is to publish the dataThe main role is to publish the data– Crating semantic web applications is the Crating semantic web applications is the
task of software developerstask of software developers
Cultural institutions can use semantic Cultural institutions can use semantic web technologiesweb technologies
Cultural institutions can use semantic Cultural institutions can use semantic web to enrich their own dataweb to enrich their own data
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Libraries on the semantic webLibraries on the semantic web
The full library contentsThe full library contents– LIBRIS (Union Catalogue of Sweden)LIBRIS (Union Catalogue of Sweden)– National Széchényi National Széchényi LibraryLibrary
Bibliographical dataBibliographical data– British LibraryBritish Library– Deutsche National BibliothekDeutsche National Bibliothek– Biblioteca Nacional de EspaBiblioteca Nacional de Españñaa
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Museums on the semantic webMuseums on the semantic web
Yale Centre of British ArtYale Centre of British Art– Full collectionFull collection– Also supporter of open data (and pictures)Also supporter of open data (and pictures)– TMS userTMS user
Smithsonian American Art MuseumSmithsonian American Art Museum– Full collectionFull collection– Links to Dbpedia, ULANLinks to Dbpedia, ULAN– TMS userTMS user
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Museums on the semantic webMuseums on the semantic web
MuseumFinlandMuseumFinlandAmsterdam MuseumAmsterdam MuseumLODAC Museum (Japan): 114 museumLODAC Museum (Japan): 114 museumItalian MuseumsItalian Museums– http://www.linkedopendata.it/datasets/musei
British MuseumBritish Museum– Online CollectionOnline Collection– http://collection.britishmuseum.org/http://collection.britishmuseum.org/
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Europeana on the semantic webEuropeana on the semantic web
Europeana Data Model (EDM)Europeana Data Model (EDM)– First implementation: Europeana Linked Data First implementation: Europeana Linked Data
PilotPilot• data.europeana.eu
– Technical descriptionTechnical description• http://pro.europeana.eu/web/guest/tech-details
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic data examplesSemantic data examples
Yale Centre of British ArtYale Centre of British Art– Via a link on an HTML pageVia a link on an HTML page– http://
collections.britishart.yale.edu/vufind/Record/3646000
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
http://collection.britishart.yale.edu/id/object/8052
How to see semantic dataHow to see semantic data
Yale Centre of British ArtYale Centre of British Art– Via a link on an HTML pageVia a link on an HTML page• http://collections.britishart.yale.edu/vufind/http://collections.britishart.yale.edu/vufind/
Record/3646000Record/3646000
– Via SPARQL endpointVia SPARQL endpoint• http://collection.britishart.yale.edu/sparqlhttp://collection.britishart.yale.edu/sparql
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web browsSemantic web browsersers
DiscoDiscoDotAcDotAcEldaEldaMarblesMarblesOpenLinkDataExplorerOpenLinkDataExplorer
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
RippleRippleSIOC BrowserSIOC BrowserSig.maSig.maTabulatorTabulatorZitgistZitgist
Source: Source:
http://http://www.w3.org/2001/sw/wiki/Category:Semantic_Web_Browserwww.w3.org/2001/sw/wiki/Category:Semantic_Web_Browser
Semantic web browersSemantic web browers
OpenLink Data ExplorerOpenLink Data Explorer
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web browersSemantic web browers
OpenLink Data ExplorerOpenLink Data Explorer
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web browersSemantic web browers
OpenLink Data ExplorerOpenLink Data Explorer
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic searchSemantic search
Europeanna ConnectEuropeanna Connect– WP1 Creating the Europeana Semantic WP1 Creating the Europeana Semantic
LayerLayer
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic web applicatonsSemantic web applicatons
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic SearchSemantic Search
works showing matching personworks showing matching personworks showing locationworks showing locationworks showing conceptworks showing conceptworks titledworks titledworks created fromworks created fromworks with matching locationworks with matching locationworks showing a more specific locationworks showing a more specific location
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic searchSemantic search
ResearchSpaceResearchSpace– http://www.researchspace.org/online-http://www.researchspace.org/online-
researchresearch
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Semantic searchSemantic search
ResearchSpaceResearchSpace– https://www.youtube.com/watch?https://www.youtube.com/watch?
feature=player_embedded&v=HCnwgq6ebfeature=player_embedded&v=HCnwgq6ebAsAs
Site based on linked dataSite based on linked data
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
How to publish your dataHow to publish your data
Convert your data into RDF statementsConvert your data into RDF statements– EDM, CIDOC_CRMEDM, CIDOC_CRM
Create external linksCreate external linksLoad the statements into a triplestoreLoad the statements into a triplestore– Jena, Virtuoso, etc.Jena, Virtuoso, etc.
Advertise your dataset in Advertise your dataset in – http://datahub.io/http://datahub.io/– Your homepageYour homepage– In email listsIn email lists
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Useful informationUseful information
Cool URIs for the Semantic WebCool URIs for the Semantic Web– http://www.w3.org/TR/2008/NOTE-cooluris-http://www.w3.org/TR/2008/NOTE-cooluris-
20080331/20080331/
How to Publish Linked Data on the WebHow to Publish Linked Data on the Web– http://www4.wiwiss.fu-berlin.de/bizer/pub/http://www4.wiwiss.fu-berlin.de/bizer/pub/
LinkedDataTutorial/LinkedDataTutorial/
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
Museum of Fine ArtsMuseum of Fine Arts and semweb and semweb
The museum has already decided to The museum has already decided to take part in a project aiming to publish take part in a project aiming to publish the metatada on the semantic webthe metatada on the semantic web
Linked Open Data – Ádám Horváth - Museum of Fine Arts, Budapest
adam.horvathadam.horvath@@szepmuveszti.huszepmuveszti.hu
Thank you for your attentionThank you for your attention