Karma: Tools for Publishing Cultural Heritage Data as LODPedro Szekely and Craig KnoblockInformation Sciences Institute, University of Southern California

“Linked” Open Data

Pedro Szekely

“Linked” Open Data

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Pedro Szekely

Linked Open Data

Pedro Szekely

Linked Open Data

Pedro Szekely

Steps to Create Linked Data

• Select ontologies… that define classes and properties for our data

• Convert data to RDF… from the museum database to the ontologies

• Identify links to other Linked Data datasets… to other museums and Link Data hubs

Pedro Szekely

step 1:select and extend

ontologies

Ontologies

edm:ProvidedCHOaac:CulturalHeritageObject

skos:Concept

skos:Concept

edm:hasType

skos:narrower

skos:prefLabelskos:prefLabel

saam:objectIddcterms:date

dcterms:provenance

dcterms:rights

dcterms:subject

dcterms:medium

dcterms:title

dcterms:description

dcterms:creator

ore:Aggregationedm:EuropeanaAggregation

crm:E89_Propositional_Object

edm:WebResourceedm:aggregatedCHO

edm:hasView

edm:Agent/crm:E39_Actor, foaf:Personaac:Person

skos:altLabel

rdaGr2:dateOfDeath

rdaGr2:biographicalInformation

rdaGr2:placeOfBirth

rdaGr2:placeOfDeath

rdaGr2:dateAssociatedWithThePerson

edm:Place/crm:E53_Placeaac:Place

aac:associatedPlace

schema:PostalAddressschema:addressCountryschema:addressLocality

schema:addressRegionschema:address

skos:prefLabel

schema:Country

schema:name

dcterms:format

rdaGr2:dateOfBirth

skos:prefLabel

8,261

44,027

20,077

41,267

15,573

41,267

15,573268

saam:objectNumber

saam:constituentId

dcterms:created

Pedro Szekely

step 2:Convert Data to RDF

Karma: Converts Your Data to Linked Data

KARMA

Pedro Szekely

Karma in Action

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demo

DMA Sample Linked Data…

dma:object_1982_35 a aac:CulturalHeritageObject ; aac:objectId "1982.35" ; dcterms:creator dma:person_John_Singer_Sargent ; dcterms:format "61.28 x 50.17 cm" ; dcterms:identifier "4,137,988" ; dcterms:medium "Oil on canvas" ; dcterms:rights "Dallas Museum of Art, gift of the Leland Fikes Foundation, Inc." ; dcterms:title "Dorothy" ; dcterms:type "Paintings" ; schema:endDate "1900" ; schema:startDate "1900” .

dma:person_John_Singer_Sargent a aac:Person ; ont0:dateOfBirth "1856" ; ont0:dateOfDeath "1925" ; foaf:name "John Singer Sargent" .

…

Pedro Szekely

step 3:identify links

Multiple “John Singer Sargent”ima:Singer_Sargent_John a aac:Person ; dct:date "1856-1925" ; foaf:name "John Singer Sargent" .

saam:person_4253 a aac:Person ; saam:associatedPlace saam:SaamPlace_1357324439768t1r13950_0, saam:SaamPlace_1357324439768t1r13951_0 ; saam:constituentId "4253" ; rdaGr2:biographicalInformation “Painter. Sargent traveled …" ; rdaGr2:dateAssociatedWithThePerson "1990-10-1”, "1995-5-8" ; rdaGr2:dateOfBirth "1856-1-12" ; rdaGr2:dateOfDeath "1925-4-15" ; rdaGr2:placeOfBirth saam:SaamPlace_1357324439768t1r13952_0 ; rdaGr2:placeOfDeath saam:SaamPlace_1357324439768t1r13953_0 ; skos:altLabel "John S. Sargent" ; skos:prefLabel "John Singer Sargent" .

cb:12_4567 a aac:Person ; ont0:dateOfBirth "1879", "1885" ; ont0:dateOfDeath "1925" ; skos:prefLabel "John Singer Sargent" .

met:person_1893_3819 a aac:Person ; ont0:placeOfResidence "North and Central America", "United States" ; foaf:name "John Singer Sargent" .

dma:person_John_Singer_Sargent a aac:Person ; ont0:dateOfBirth "1856" ; ont0:dateOfDeath "1925" ; foaf:name "John Singer Sargent" .

Pedro Szekely

John Singer Sargentima:SaamPerson_John_Singer_Sargent a aac:Person ; dct:date "1856-1925" ; foaf:name "John Singer Sargent" .

aac:Person_4253 a aac:Person ; saam:associatedPlace saam:SaamPlace_1357324439768t1r13950_0, saam:SaamPlace_1357324439768t1r13951_0 ; saam:constituentId "4253" ; rdaGr2:biographicalInformation “Painter. Sargent traveled …" ; rdaGr2:dateAssociatedWithThePerson "1990-10-1”, "1995-5-8" ; rdaGr2:dateOfBirth "1856-1-12" ; rdaGr2:dateOfDeath "1925-4-15" ; rdaGr2:placeOfBirth saam:SaamPlace_1357324439768t1r13952_0 ; rdaGr2:placeOfDeath saam:SaamPlace_1357324439768t1r13953_0 ; skos:altLabel "John S. Sargent" ; skos:prefLabel "John Singer Sargent" .

cb:SaamPerson_John_Singer_Sargent a aac:Person ; ont0:dateOfBirth "1879", "1885" ; ont0:dateOfDeath "1925" ; skos:prefLabel "John Singer Sargent" .

met:SaamPerson_John_Singer_Sargent a aac:Person ; ont0:placeOfResidence "North and Central America", "United States" ; foaf:name "John Singer Sargent" .

dallas:SaamPerson_John_Singer_Sargent a aac:Person ; ont0:dateOfBirth "1856" ; ont0:dateOfDeath "1925" ; foaf:name "John Singer Sargent" .

Pedro Szekely

Linking “John Singer Sargent”

saam:person_4253 owl:sameAs cb:12_4567 ; owl:sameAs dma:person_John_Singer_Sargent ; owl:sameAs ima:Singer_Sargent_John ; owl:sameAs met:SaamPerson_John_Singer_Sargent ; owl:sameAs dbpedia:John_Singer_Sargent ; owl:sameAs nytimes/N49129220686803623753 ; owl:sameAs w-flick/John_Singer_Sargent ; ....

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Linking with Karma

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Results of Automatic Linking

DBPedia 2,194 New York Times 70

ULAN 2,110Rijksmuseum 551

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Summary

Pedro Szekely