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Amsterdam Museum as EDM Linked Open Data
 

Amsterdam Museum as EDM Linked Open Data

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Talk about conversion of Amsterdam Museum metadata to Europeana Data Model, linking it to other data sources and publishing it as Linked Open Data

Talk about conversion of Amsterdam Museum metadata to Europeana Data Model, linking it to other data sources and publishing it as Linked Open Data

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    Amsterdam Museum as EDM Linked Open Data Amsterdam Museum as EDM Linked Open Data Presentation Transcript

    • www.europeanaconnect.euAmsterdam Museum as EDM LODVictor de Boer -- VU University AmsterdamWith input from Antoine Isaac, Jan Wielemaker, Jacco vanOssenbruggen and Guus Schreiber
    • www.europeanaconnect.euAmsterdam Museum• Formerly Amsterdam Historic Museum • “The rich collection of works of art, objects and archaeological finds brings to life the fortunes of Amsterdammers of days gone by and today.”• In March 2010 published their entire collection online • 70.000 objects • CC license• We converted their data to EDM / RDF and published it as Linked Open Data Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euAmsterdam Museum as EDM LODVictor de BoerEuropeana v.1 WP3 MeetingVienna 28-29 March 2011
    • www.europeanaconnect.euAM metadata <record priref="10541“ > <acquisition.date>1997</acquisition.date>• Adlib database XML API <dimension> <dimension.type>hoogte</dimension.type>• Object metadata <dimension.unit>cm</dimension.unit> <dimension.value>6</dimension.value> </dimension> • 73.000 objects, 256MB … </record> • Nested XML• Concept Thesaurus <record priref="28024“ > <term>Kalverstraat 124</term> • 27.000, 9MB <broader_term>Kalverstraat</broader_term> <term.type>GEOKEYW </term.type> • Different types (geo,motif, event) </record>• Person „Thesaurus‟ <record priref="6" > <biography>boekverkoper en uitgever van • 67.000 persons, 10MB cartografie</biography> <birth.date.start>1659</birth.date.start> • Consolidated from object metadata fields <death.date.start>1733</death.date.start> <name>Aa, Pieter van der</name> • Creators, annotators, reproduction creators, <nationality>Nederlands</nationality> <use>Aa, Pieter van der (I)</use> </record> institutions Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euConversion and alignment process 1. pure syntactic transformation to RDF Cliopatria 2. map to EDM classes/properties (mapping table -> schema file) 3. conversion rules to restructure, XMLRDF generate uris and do complex stuff (XMLRDF tool) 4. align with Europeana and external Amalgame sources 5. publish as LOD Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euDirect RDF conversion<record priref="10541“ > <acq.date>1997</acqdate> <dimension> <dimension.type>hoogte</dimension.type> <dimension.unit>cm</dimension.unit> <dimension.value>6</dimension.value> </dimension>…</record> am:priref “10541” am:acq.date “1997” am:dim.type “hoogte” am:dim.value am:Record “6” am:dimension _:bn1 am:Dimension _:bn2 Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euMapping schema file am:creditLine a rdf:Property ;• Turtle schema files rdfs:subPropertyOf dcterms:rights . • rdfs:subClassOf + rdfs:subPropertyOf: Keep am:dimension a rdf:Property ; rdfs:subPropertyOf dcterms:extent . original (specific) data, interoperability on EDM am:documentation a rdf:Property ; level rdfs:subPropertyOf dcterms:description.• For object metadata am:objectCategory a rdf:Property ; rdfs:subPropertyOf dcterms:description. • Dcterms: creator, date, description • EDM-specific properties: event, agent am:scopeNote a rdf:Property ; rdfs:subPropertyOf skos:scopeNote.• Thesaurus concepts am:priref a rdf:Property ; rdfs:subPropertyOf dcterms:identifier. • SKOS + some dcterms• Persons am:Person a rdfs:Class ; rdfs:subClassOf ens:Agent. • RDA Group 2 elements am:equivalentName a rdf:Property ; • http://metadataregistry.org/schema/show/id/1 rdfs:subPropertyOf rda:variantNameForThePerson. am:name a rdf:Property ; 5.html rdfs:subPropertyOf rda:preferredNameForThePerson. Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euXMLRDF Conversion• RDF interpretation of the data. Minimal enrichment • Refer to resources rather then to terms • Identify the resource and replace literals by URIs • Clean up (remove empty vals) • Some blank node structures retained < am:proxy1, am:maker, _:bnode1> < _:bnode1, am:creator, am:p-001>• Mint URIs < _:bnode1, am:creatorRole, am:t-printer> < _:bnode1, am: creatorQual, “copy after”> • PURL basename: purl.org/collections/nl/am/ • Use prirefs, prefixed by “proxy-”, “aggregation-”, “p-” or “t-”• Make EDM dimensions @@ { _S, am:dimension, B}, • Establish Proxy-Aggregation-PhysObject triangle { B, am:dimensionValue, literal(Val)}, { B, am:dimensionUnit, literal(Unit)}?, • Move predicates to appropriate resource { B, am:dimensionType, literal(Type)}?  • Images (ens:object) concat ([Type,Val,Unit], ConcatVal), {B, rdfs:label, literal(ConcatVal)}. Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euXMLRDF Conversion• Conversion rules are simple for flat record structures but more complex for richer data. • APEnet • Amsterdam Museum• (Initial) rules can be generated from other visual ingestion tools. • Simple rules, but with the full expressivity of programming lang.• ~ 6 Million Amsterdam Museum RDF triples Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euAmalgame Alignment: Thesaurus • 143 links to GeoNames NL • 2498 AM concepts linked to AATNed. • 1322 links to be checked Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euAmalgame Alignment: Persons • 1076 AM persons matched to ULAN (VIAF) • 34 matched to DBPedia • More for human check Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euServing the Data• PURL redirects to semantic layer • http://purl.org/collections/nl/am/proxy-63432  • http://semanticweb.cs.vu.nl/europeana/browse/list_resource?r=htt p://purl.org/collections/nl/am/proxy-63432• HTTP request HTML: • Condensed Local view • Full Local view• HTTP request RDF/XML • rdf/xml “describe”• SPARQL endpoint Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euAmsterdam Museum as EDM LODVictor de BoerEuropeana v.1 WP3 MeetingVienna 28-29 March 2011
    • www.europeanaconnect.euAmsterdam Museum as EDM LODVictor de BoerEuropeana v.1 WP3 MeetingVienna 28-29 March 2011
    • www.europeanaconnect.euhttp://semanticweb.cs.vu.nl/europeana/user/query Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euLinked Open Data• Registered on CKAN• More links • to Amsterdam Rijksmonumenten • to Amsterdam Stadsarchief • to DBPedia (SILK): LATC• Used by external parties/projects • Oneindig NH • Apps for Amsterdam Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011
    • www.europeanaconnect.euURL pointers• Amsterdam Museum in EDM LOD • http://semantic.web.cs.vu.nl/lod/am/ • http://ckan.net/package/amsterdam-museum-as-edm-lod • Thoughtlab• Semantic layer • [Browse] http://semanticweb.cs.vu.nl/europeana/ • [SPARQL] http://semanticweb.cs.vu.nl/europeana/user/query• Tools • [ClioPatria] http://e-culture.multimedian.nl/software/ClioPatria.shtml • [xmlrdf] http://e-culture.multimedian.nl/software/ClioPatria.shtml • [Amalgame] http://semanticweb.cs.vu.nl/amalgame/ Amsterdam Museum as EDM LOD Victor de Boer Europeana v.1 WP3 Meeting Vienna 28-29 March 2011