OCLC ResearchOCLC Online Computer Library Center
Academic Library Association of Ohio, Technical Services IG19 May 2006OHIONET, Columbus, Ohio
Web Services for [Controlled] Vocabularies
Diane Vizine-Goetz
OCLC Research
OCLC ResearchOCLC Online Computer Library Center
Controlled Vocabulary
– a limited set of terms that must be used to index | represent | tag the subject matter | content of documents | objects.
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Examples
Lists of “approved” words or phrases
Thesauri
Subject heading systems
Classification schemes
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Vocabularies Research Projects
Terminologies Project
Project team: Diane Vizine-Goetz, Carol Hickey, Andrew Houghton, Tram Nguyen-Pham, Roger Thompson
Classify Prototype
Project team: Diane Vizine-Goetz & Harry Wagner
Tag Clouds Service
Project team: Diane Vizine-Goetz & Harry Wagner
OCLC ResearchOCLC Online Computer Library Center
Terminologies Project
Provides access to enriched versions of controlled vocabularies (CVs)
Uses Web services to interact with vocabularies (machine-friendly)
Services provided through the Microsoft® Office (MS) Research task pane
TerminologyServices
Architecture
Web ServiceProxy
SRW/U REST SOAP
BrowserSidebar
Metadata Editing Application
•Registration•Query handling•Markup translation•Authorization/Authentication
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Off
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Re
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Full Text SQL XML
1
2
3
Storage Technology Layer
Application Protocol Layer
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Benefits
Provides access to multiple CVs through one user-friendly interface
Can search one vocabulary at a time or all vocabularies together
Users can insert controlled vocabulary terms into records with MARC coding or as text strings
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Available mid-2006
Dublin Core Metadata Initiative Type Vocabulary
Guidelines on Subject Access to Individual Works of Fiction, Drama, etc. (GSAFD) list of form/genre headings
Thesaurus of Graphic Materials (TGM I)
Thesaurus of Graphic Materials (TGM II)
Medical Subject Headings (MeSH)
Newspaper Genre List
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Future release
Getty Vocabularies
Art & Architecture Thesaurus (AAT)
Thesaurus of Geographic Names (TGN)
Union List of Artists' Names (ULAN)
Research pane toolbar icon
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Classify Prototype
Features
Employs data mining of holdings and FRBR
Provides human and machine interfaces that resolve OCLC record number or ISBN to DDC or LCC
Tested with records from WorldCat, a national library, and a public library
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Internal data structure<key>lax, eric/woody allen a biography</key>
<count>7</count>
<holdings>2147</holdings>
- <holdings>
<oclcid heldby="79">25644860</oclcid>
<oclcid heldby="10">26632778</oclcid>
<oclcid heldby="11">27768216</oclcid>
<oclcid heldby="1788">22662351</oclcid>
<oclcid heldby="90">24952523</oclcid>
<oclcid heldby="1">27725913</oclcid>
<oclcid heldby="168">45714340</oclcid>
</holdings>
</work>
- <classes>
- <ddc>
<ddc_number>791.43092</ddc_number>
<edition>20</edition>
<oclcid>27768216</oclcid>
<oclcid>27725913</oclcid>
<holdings>12</holdings>
</ddc>
- <ddc>
<ddc_number>791.43/092</ddc_number>
<edition>20</edition>
<oclcid>24952523</oclcid>
<oclcid>22662351</oclcid>
<holdings>1878</holdings>
</ddc>
</classes>
With DDC FRBR Work Set
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Phoenix Public Library test
222,197 without DDC numbers
44,704 DDC added from FRBR-clustered records
Four DDC main classes accounted for more than 91% class numbers
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1%
1%
2%
10%
2%
1%
2%
13%
61%
7%
0 Computer Science…
1 Philosophy & Psychology
2 Religion
3 Social Sciences
4 Language
5 Science
6 Technology
7 Arts
8 Literature
9 History & Geography
DDC added by Main Class
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Tag Cloud
A tag cloud (...known as a weighted list in the field of visual design) is a visual depiction of content tags…
More frequently used tags are depicted in a larger font or otherwise emphasized
The displayed order is generally alphabetical
(Wikipedia)
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Flickr tags
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Tag Cloud Service Features
Provides flexible settings for
Intervals, e.g.,
last 24 hours, last 7 days, last month, etc
Tags per cloud (all, 100, 50,…)
Font sizes
Provides sample style sheets
Employs REST-style calls to add tags
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DDC Numbers in eBooks Collection
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Subject Headings in WorldCat
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Try it
DeweyBrowser
eBooks
WorldCat
Find in a library
Subjects in WorldCat
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Links
OCLC Research
http://www.oclc.org/research/
ResearchWorks
http://www.oclc.org/research/researchworks/