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RLG Programs
Museum Data Exchange: Making hay with harvestable data
Günter WaibelProgram OfficerOCLC Research
12 November 2009MCN Portland
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Museum Data Exchange
Create ToolsExtract CDWA Lite XMLPublish via OAI-PMH
Harvest DataTest toolsCreate Research Aggregation
Analyze DataStandards compliance?Interoperability?
What now?
Harvard University Art MuseumsMetropolitan Museum of ArtNational Gallery of ArtPrinceton University Art MuseumYale University Art GalleryCleveland Museum of ArtVictoria & Albert Museum (UK)National Gallery of Canada (CA)Minneapolis Institute of Artfunded by Andrew W. Mellon
Foundation
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Open Archives Initiative (OAI) Protocol for Metadata Harvesting
MuseumsOCLCResearch
TMSCOBOA
TOAICatMuseum
Research Aggregatio
n
Museums
Basic Interface
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Research Aggregation
9 Museums887,572
Records
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Analyzing the Research Aggregation
My data• Are CDWA Lite required fields present?• What is the state of CCO compliance of the data?• Who uses which controlled vocabularies, and does their use
demonstrably aid retrieval?• Suggest strategies to work around the inevitable
inconsistencies in institutional data
Aggregate data• Which CDWA Lite fields are used by all institutions?
• Do queries across the aggregate return meaningful results?• How is my cataloging different from other institution’s
cataloging?• Suggest strategies to work around the inevitable
inconsistencies in aggregate data
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Available at:http://hangingtogether.org/wp-content/uploads/2009/04/methodology_03-30-2009.pdf
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Use of CDWA Lite
131 CDWA Lite units of information
Mu
seu
ms
54% not used
8% used by all
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Conformance to CDWA Lite
Required/Highly recommended elements
Record
s
90% consistency
for 7 of 17
elements
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Impact of COBOAT mapping
based on museum mapping documents uses 32 units of information of the 131 CDWA Lite
defined all required/recommended elements and
attributes are in the default mapping, except for <subjectTerm>
4 out of 6 COBOAT contributors used, in various combinations, 11 additional elements and attributes
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Controlled Vocabularies
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
379 838 519 577 232 200 200
TGN ULAN TGN AAT AAT AAT TGN
locationName nameCreator nationalityCreatorobjectWorkType roleCreator subjectTerm subjectTerm
Matches
preferred non-preferred
match rates< 42%
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Data Values correlated to records
Top 100<objectWorkTy
pe>
All the Institution’s
100K+ Records
AAT Match27
No AAT Match
73 73%
99%
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Data Values correlated to records
Top 100<nameCreator>
All the Institution’s
200K+ records
ULAN Match49
No ULAN
Match51
25%
50%
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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What now?
“We must create a single information system which embraces all museum holdings in the United States”
- MCN/IBM 1969
“Universal access to cultural heritage will likely soon become a reality, but museums may be
losing their role as key players.”
- Nicholas Crofts 2008
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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publishing your
collections
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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reaching educators
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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reachinghigher
education
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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sharing infrastructu
re
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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projecting
authority
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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nationalcollaborati
on
Programs & Research Günter Waibel – Museum Data ExchangeMCN Portland – 12 November 2009
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Thank you!
Thanks also to my colleagues and collaborators Bruce Washburn and Ralph LeVan.
Museum Data Exchangehttp://www.oclc.org/research/activities/museumdata/default.htm
- report forthcoming -
OAICatMuseum 1.0http://www.oclc.org/research/activities/oaicatmuseum/default.htm
COBOAThttp://www.oclc.org/research/activities/coboat/default.htm
Günter [email protected]: guWa
blog: hangingtogether.org