1. Karma: Tools for
Publishing Cultural
Heritage Data as LOD
Pedro Szekely and Craig Knoblock
Information Sciences Institute, University of Southern California

2. “Linked” Open Data
Crystal Bridges
Museum of
American Art
Dallas Museum
of Art
I ndianapolis
Museum
of Art
The Met ropolitan
Museum of Art
Nat ional Port rait
Gallery
Smit hsonian American
Art Museum
Pedro Szekely

3. “Linked” Open Data
Crystal Bridges
Museum of
American Art
Dallas Museum
of Art
I ndianapolis
Museum
of Art
The Met ropolitan
Museum of Art
Nat ional Port rait
Gallery
Smit hsonian American
Art Museum
✔
✖
Pedro Szekely

4. Linked Open Data
Crystal Bridges
Museum of
American Art
Dallas Museum
of Art
I ndianapolis
Museum
of Art
The Met ropolitan
Museum of Art
Nat ional Port rait
Gallery
Smit hsonian American
Art Museum
Pedro Szekely

5. Linked Open Data
Pedro Szekely

6. 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

7. step 1:
select and extend
ontologies

8. Ontologies
edm:ProvidedCHO
aac:CulturalHeritageObject
skos:Concept
skos:Concept
edm:hasType
skos:narrower
skos:prefLabelskos:prefLabel
saam:objectId
dcterms:date
dcterms:provenance
dcterms:rights
dcterms:subject
dcterms:medium
dcterms:title
dcterms:description
dcterms:creator
ore:Aggregation
edm:EuropeanaAggregation
crm:E89_Propositional_Objec
t
edm:WebResource
edm:aggregatedCHO
edm:hasView
edm:Agent/crm:E39_Actor, foaf:Person
aac:Person
skos:altLabel
rdaGr2:dateOfDeath
rdaGr2:biographicalInformation
rdaGr2:placeOfBirth
rdaGr2:placeOfDeath
rdaGr2:dateAssociated
WithThePerson
edm:Place/crm:E53_Place
aac:Place
aac:associatedPlace
schema:PostalAddressschema:addressCountry
schema:addressLocality
schema:addressRegion
schema: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
15,573
268
saam:objectNumber
saam:constituentId
dcterms:created
Pedro Szekely

9. step 2:
Convert Data to RDF

10. Karma: Converts Your Data to
Linked Data
KARMA
Pedro Szekely

11. Karma in Action
Pedro Szekely

12. demo

13. 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

14. step 3:
identify links

15. Multiple “John Singer Sargent”
ima:Singer_Sargent_John
a aac:Person ;
dct:date "1856-1925" ;
foaf:name "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" .
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" .
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" .
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" .
dma:person_John_Singer_Sargent
a aac:Person ;
ont0:dateOfBirth "1856" ;
ont0:dateOfDeath "1925" ;
foaf:name "John Singer Sargent" .
Pedro Szekely

16. John Singer Sargent
ima:SaamPerson_John_Singer_Sargent
a aac:Person ;
dct:date "1856-1925" ;
foaf:name "John Singer Sargent" .
ima: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" .
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" .
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" .
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" .
dallas:SaamPerson_John_Singer_Sargent
a aac:Person ;
ont0:dateOfBirth "1856" ;
ont0:dateOfDeath "1925" ;
foaf:name "John Singer Sargent" .
Pedro Szekely

17. 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 ;
...
.
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 ;
...
.
Pedro Szekely

18. Linking with Karma
Pedro Szekely

19. Results of Automatic Linking
DBPedia 2,194
New York Times 70
ULAN 2,110
Rijksmuseum 551
Pedro Szekely

20. Summary
Pedro Szekely