Linked Open Data Horváth Ádám Museum of Fine Arts, Budapest MUZEUM@DIGIT Múzeumi...

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



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



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">">



Concrete example (RDF/XML)Concrete example (RDF/XML)– PredicatePredicate• http://purl.org/dc/terms/creatorhttp://purl.org/dc/terms/creator



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



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""/>/>



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>>



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



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


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


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


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


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


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


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


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


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/


http://www.linkedopendata.it/datasets/musei

http://www.linkedopendata.it/datasets/musei

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


http://data.europeana.eu/

http://pro.europeana.eu/web/guest/tech-details

http://pro.europeana.eu/web/guest/tech-details

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


http://collections.britishart.yale.edu/vufind/Record/3646000



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


Semantic web browsSemantic web browsersers

DiscoDiscoDotAcDotAcEldaEldaMarblesMarblesOpenLinkDataExplorerOpenLinkDataExplorer


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


Semantic searchSemantic search

Europeanna ConnectEuropeanna Connect– WP1 Creating the Europeana Semantic WP1 Creating the Europeana Semantic

LayerLayer


Semantic web applicatonsSemantic web applicatons

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



ResearchSpaceResearchSpace– http://www.researchspace.org/online-http://www.researchspace.org/online-

researchresearch



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


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


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/


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


adam.horvathadam.horvath@@szepmuveszti.huszepmuveszti.hu

Thank you for your attentionThank you for your attention

Linked Open Data Horváth Ádám Museum of Fine Arts, Budapest MUZEUM@DIGIT Múzeumi...

Documents

Transcript of Linked Open Data Horváth Ádám Museum of Fine Arts, Budapest MUZEUM@DIGIT Múzeumi...