Museum Data Exchange

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


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Open Archives Initiative (OAI) Protocol for Metadata Harvesting

MuseumsOCLCResearch

TMSCOBOA

TOAICatMuseum

Research Aggregatio

n

Museums

Basic Interface


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Research Aggregation

9 Museums887,572

Records


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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


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Available at:http://hangingtogether.org/wp-content/uploads/2009/04/methodology_03-30-2009.pdf


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Use of CDWA Lite

131 CDWA Lite units of information

Mu

seu

ms

54% not used

8% used by all


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Conformance to CDWA Lite

Required/Highly recommended elements

Record

s

90% consistency

for 7 of 17

elements


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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


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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%


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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%


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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%


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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


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publishing your

collections


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reaching educators


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reachinghigher

education


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sharing infrastructu

re


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projecting

authority


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nationalcollaborati

on


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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

Museum Data Exchange

Education

Transcript of Museum Data Exchange