OCLC Research OCLC Online Computer Library Center Academic Library Association of Ohio, Technical...

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


Controlled Vocabulary

– a limited set of terms that must be used to index | represent | tag the subject matter | content of documents | objects.


Examples

Lists of “approved” words or phrases

Thesauri

Subject heading systems

Classification schemes


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


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

Mic

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Off

ice

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se

arc

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Pa

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Full Text SQL XML

1

2

3

Storage Technology Layer

Application Protocol Layer


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


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


Future release

Getty Vocabularies

Art & Architecture Thesaurus (AAT)

Thesaurus of Geographic Names (TGN)

Union List of Artists' Names (ULAN)

Research pane toolbar icon


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


Internal data structure<key>lax, eric/woody allen a biography</key>

<count>7</count>

<holdings>2147</holdings>

- <holdings>

<oclcid heldby="79">25644860</oclcid>







</holdings>

</work>

- <classes>

- <ddc>

<ddc_number>791.43092</ddc_number>

<edition>20</edition>

<oclcid>27768216</oclcid>



</ddc>

- <ddc>

<ddc_number>791.43/092</ddc_number>

<edition>20</edition>




</ddc>

</classes>

With DDC FRBR Work Set


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


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


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)


Flickr tags


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


DDC Numbers in eBooks Collection


Subject Headings in WorldCat


Try it

DeweyBrowser

eBooks

WorldCat

Find in a library

Subjects in WorldCat


Links

OCLC Research

http://www.oclc.org/research/

ResearchWorks

http://www.oclc.org/research/researchworks/

OCLC Research OCLC Online Computer Library Center Academic Library Association of Ohio, Technical...

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