Connecting the Smithsonian American Art Museum to the Linked Data Cloud

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1 Connecting the Smithsonian American Art Museum to the Linked Data Cloud Pedro Szekely, Craig A. Knoblock, Fengyu Yang, Xuming Zhu, Eleanor E. Fink, Rachel Allen, and Georgina Goodlander, Los Angeles, California, USA Nanchang Hangkong University, Nanchang, China Smithsonian American Art Museum, Washington, DC, USA

2 The The Smithsonian Smithsonian American American Art Art Museum Museum is is a a museum museum in in Washington, Washington, D.C. D.C. which which has has one one of of the the world's world's largest largest and and most most inclusive inclusive collections collections of of art, art, from from the the colonial colonial period period to to the the present, present, made made in in the the United United States. States. Wikipedia Wikipedia

3 Big Picture

4 Problem SAAM Data What ontology to use? Data consistency Structure mismatches What to link to? 100% precision How to enable museums to do this themselves?

5 Steps to Create Linked Data Map data to RDF select ontologies define mappings Link to external resources identify the links Curate the Linked Data museums demand 100% correctness

6 select ontologies

7 61 pages 35 pages 37 pages 138 pages

8 138 pages Complicated 37 pages 35 pages Many irrelevant classes and properties 61 pages

9 ore:aggregation edm:europeanaaggregation crm:e89_propositional_object edm:webresource edm:hasview edm:aggregatedcho edm:providedcho, E22_Man_Made_Object aac:culturalheritageobject dcterms:creator edm:agent/crm:e39_actor, foaf:person aac:person aac:associatedplace rdagr2:placeofbirth rdagr2:placeofdeath edm:place/crm:e53_place aac:place schema:address schema:postaladdress

10 skos:preflabel skos:concept skos:narrower dcterms:title dcterms:description dcterms:medium saam:objectid skos:preflabel saam:objectnumber saam:constituentid skos:preflabel skos:altlabel skos:concept edm:hastype rdagr2:biographicalinformation ore:aggregation edm:europeanaaggregation edm:aggregatedcho edm:providedcho, E22_Man_Made_Object aac:culturalheritageobject dcterms:creator edm:hasview edm:agent/crm:e39_actor, foaf:person aac:person rdagr2:placeofbirth aac:associatedplace edm:place/crm:e53_place aac:place dcterms:subject crm:e89_propositional_object edm:webresource dcterms:created dcterms:rights dcterms:format dcterms:date dcterms:provenance rdagr2:dateofbirth rdagr2:dateofdeath rdagr2:dateassociated WithThePerson rdagr2:placeofdeath schema:name schema:country skos:preflabel schema:addresscountry schema:addressregion schema:address schema:postaladdress schema:addresslocality

11 mapping the data to the ontologies how to enable museums to do this themselves?

12 Karma Interactive tool for rapidly extracting, cleaning, transforming, integrating, and publishing data Tabular Sources Karma Hierarchical Sources Services Model Database [ Knoblock, Szekely, et al. Semi automatically mapping structured sources into the semantic web. ISWC 2012 ]

13 specifying transformations and mapping to properties with Karma

14 aac ont:person rdf:type saam:person/15 aac ont:marriedname Alice Stanley Archeson rdf:type saam:person/2 aac ont:variantname George M. Aarons

15

16 mapping to object properties using Karma

17

18 Evaluation of Data Mapping Using Karma SAAM database 8 tables 29 columns Ontologies 407 classes 105 data properties 229 object properties

19 identifying and curating links

20 Multiple John Singer Sargent cb:person_john_singer_sargent a aac-ont:person ; ont0:dateofbirth "1879", "1885" ; ont0:dateofdeath "1925" ; foaf:name "John Singer Sargent". ima:person_john_singer_sargent a aac-ont:person ; dct:date " " ; foaf:name "John Singer Sargent". dallas:person_john_singer_sargent a aac-ont:person ; ont0:dateofbirth "1856" ; ont0:dateofdeath "1925" ; foaf:name "John Singer Sargent". saam:person_4253 a aac-ont:person ; met:person_john_singer_sargent aac-ont:associatedplace a aac-ont:person ; saam:saamplace_ t1r13950_0, ont0:placeofresidence saam:saamplace_ t1r13951_0 ; "North and Central America", saam:constituentid "4253" ; "United States" ; rdagr2:biographicalinformation foaf:name "John Singer Sargent". Painter. Sargent traveled " ; rdagr2:dateassociatedwiththeperson " , " " ; rdagr2:dateofbirth " " ; rdagr2:dateofdeath " " ; rdagr2:placeofbirth saam:saamplace_ t1r13952_0 ; rdagr2:placeofdeath saam:saamplace_ t1r13953_0 ; foaf:name "John S. Sargent" ; skos:altlabel "John S. Sargent" ; skos:preflabel "John Singer Sargent".

21 John Singer Sargent cb:saamperson_john_singer_sargent a saam:saamperson ; ont0:dateofbirth "1879", "1885" ; ont0:dateofdeath "1925" ; skos:preflabel "John Singer Sargent". ima:saamperson_john_singer_sargent a saam:saamperson ; dct:date " " ; foaf:name "John Singer Sargent". dallas:saamperson_john_singer_sargent a saam:saamperson ; ont0:dateofbirth "1856" ; ont0:dateofdeath "1925" ; foaf:name "John Singer Sargent". saam:saamperson_4253 a saam:saamperson ; met:saamperson_john_singer_sargent saam:associatedplace a saam:saamperson ; saam:saamplace_ t1r13950_0, ont0:placeofresidence saam:saamplace_ t1r13951_0 ; "North and Central America", saam:constituentid "4253" ; "United States" ; rdagr2:biographicalinformation foaf:name "John Singer Sargent". Painter. Sargent traveled " ; rdagr2:dateassociatedwiththeperson " , " " ; rdagr2:dateofbirth " " ; rdagr2:dateofdeath " " ; rdagr2:placeofbirth saam:saamplace_ t1r13952_0 ; rdagr2:placeofdeath saam:saamplace_ t1r13953_0 ; skos:altlabel "John S. Sargent" ; skos:preflabel "John Singer Sargent".

22 Linking John Singer Sargent saam:person_4253 owl:sameas cb:person_john_singer_sargent ; owl:sameas dallas:person_john_singer_sargent ; owl:sameas ima:person_john_singer_sargent ; owl:sameas met:person_john_singer_sargent ; owl:sameas dbpedia:john_singer_sargent ; owl:sameas nytimes:n ; owl:sameas w-flick:john_singer_sargent ;....

23 Intuition Estimate discrimination power of properties, e.g., of name, birth and death dates every combination of dates birth date death date # of people similar idea to Song, D., Heflin, J.: Domain independent entity coreference for linking ontology instances. ACM Journal of Data and Information Quality (ACM JDIQ) (2012)

24 Evaluation of Automatic Linking SAAM names starting with A matched by hand 535 people 176 matches

25 Results of Automatic Linking DBPedia 2,194 New York Times 70 estimate 30 missing links to DBpedia Getty ULAN 2,110 Rijksmuseum 551 Geonames 3,068

26 Curating Links with Karma

27 Linking with Karma

28 results of automated linking and interactive curation recorded using PROV owl:sameas statements constructed using SPARQL CONSTRUCT queries over PROV records

29 deployment

30 L Q R A P S c i l b u p t n i o p d en University of Southern California Pedro Szekely and Craig Knoblock

31 University of Southern California Pedro Szekely and Craig Knoblock

32 s e i r e u q L Q SPAR t n i o p d n e r to ou University of Southern California Pedro Szekely and Craig Knoblock

33 s e i r e u q L Q SPAR t n i o p d n e r to ou University of Southern California Pedro Szekely and Craig Knoblock

34 Related Work Europeana 17 million items, 1,500 institutions Require exports in Europeana format Amsterdam Museum, Museum Finland Rich ontology, RDF to RDF mapping rules LODAC museums in Japan 114 museums, simple ontology Research Space, British Museum CIDOC CRM ontologies, complex mappings We focused significantly on Linking identification and curation

35 Next Steps Applications leveraging linked data Virtual museum Tools to create multimedia stories about art Tools to find inconsistencies Feed data to wikidata American Art Collective: a linked data consortium of museums

36 Merci

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