The DDC at Universit

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The DDC at Universitätsbibliothek Wien

• Universitätsbibliothek Wien
• 29 April 2009
• Joan S. Mitchell
• Editor in Chief, DDC
• OCLC
• mitchelj_at_oclc.org

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Complex KO Environment at UW

• Accession date scheme used for shelving
• GND authority file (PND, GKD, SWD)
• Two classification schemes
• Basisklassifikation (BK) to be added in June 2009
  
• DDC to be introduced by 2014
• What is the potential role of the DDC in this
  complex Knowledge Organization (KO) environment?

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Outline

• What are the benefits of the DDC?
• What explicit and implicit relationships exist
  between the DDC and other KO tools?
• What are some uses of the DDC?
• What resources exist for DDC training?
• Discussion

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What are the benefits of the DDC?

• Large amount of categorized content
• Organizational support
• Worldwide user community
• Language-independent representation
• Interoperable translations
• Mappings and crosswalks

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DDC already associated with a large number of
resources

• WorldCat
• 25 of WorldCat records include explicit Dewey
  numbers plus more derived using FRBR work sets
• Number is growing, e.g., Deutsche
  Nationalbibliothek is now adding Dewey numbers to
  WorldCat nearly at the same rate as the Library
  of Congress
• Other utilities and databases, e.g., BIBSYS,
  NORART, NORBOK
• Digital libraries, e.g., World Digital Library

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WorldCat
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NORART
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NORBOK Doktoravhandlinger
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World Digital Library
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Organizational support

• Permanent editorial staff at LC and OCLC
• OCLC research and development teams
• Ten-member international advisory board (EPC)
• Current members from Australia, Canada, South
  Africa, UK, US
• National libraries and translation teams with
  observer status

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Dewey Community

• ACOC National Libraries
• ALA Translation Teams
• CILIP Research Partners
• EDUG HILT (UK)
• Konsortium DDC Deutsch DNB
• NKKI JRC (EC)
• SABINET CACAO (EC)
• Editorial Policy Committee
• LC OCLC
• DDC Editors
• Dewey Users around the World

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Language-independent representation
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Translations
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Mappings to subject headings (1)

• Library of Congress Subject Headings (LCSH)
• Medical Subject Headings (MeSH)
• Canadian Subject Headings (CSH)
• Sears List of Subject Headings (Sears)
• Book Industry Standards and Communications
  (BISAC) Subject Headings

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Mappings to subject headings (2)

• RAMEAU French
• Schlagwortnormdatei (SWD) German
• Nuovo Soggettario Italian
• Sears Lista de Encabezamientos de Materia
  Spanish

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LCSH-DDC mappings in WebDewey
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SWD-DDC mappings in MelvilClass
SWD-DDC mappings
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RAMEAU - DDC (broad level only)
620     aAnesthesiavLCSH (en ligne),
2005-02-21622 1  aAnesthesiavMeSH (en ligne),
2005-02-21624     a610
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Crosswalks between schemes

• LCC DDC (ClassWeb, Classify)
• UDC DDC (IZUM, Czech National Library)
• SAB DDC (Electronic updated version at National
  Library of Sweden)
• But no explicit crosswalks for
• RVK-DDC (some experimentation in Carmen)
• BK-DDC (???)

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Tools using explicit and derived relationships

• Classify
• VIAF
• WorldCat Identities

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Classify

• DDC/LCC/NLM classifier
• Developed by OCLC Office of Research
• Based on FRBR cluster data
• Work-set summary of class numbers assigned
• Human interface web service

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Classify Author search
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Classify Search results
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Classify Details
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Classify Link to DeweyBrowser
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Paths to DDC numbers through VIAF
Teresa, Mother
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Links between LC NA PND via VIAF
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WorldCat Identities
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What are some uses of the DDC?

• A few examples that focus on the use of the DDC
  to enhance browsing and retrieval . . .

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Access Numbers Examples (1)

• History of Vienna, Linz, and Salzburg
• 082 00 a 943.6 2 22 (Austria)
• 083 0 a 943.613 2 22 (Vienna)
• 083 0 a 943.624 2 22 (Linz)
• 083 0 a 943.632 2 22 (Salzburg)

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Access Numbers Examples (2)

• Geographic access in the British Library
  Newspaper Project
• Birmingham Post
• 083 0 z 2 a 424 2 22 q Uk (West
  Midlands)
• 083 0 z 2 a 42496 2 22 q Uk (Birmingham
  City)

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Component Parts Example

• Artistic themes in literature
• 082 04 8 1 a 808.80357 2 22
• 085 8 1.1 b 808.80 a 808.801 c 808.303 z
  3C s 357

Artistic themes
Collections of literary texts from more
than two literatures displaying specific features
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(No Transcript)
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DeweyBrowser
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DeweyBrowser (German)
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DB example
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BASE (Bielefeld Academic Search Engine)
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BASE Browse results
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(No Transcript)
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Shelfview Book search
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Shelfview Virtual DDC view
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Training Resources

• Einleitung in die Dewey-Dezimalklassification
• http//www.ddc-deutsch.de/publikationen/pdf/DDC_22
  _Deutsch_Einleitung.pdf
• Glossar
• http//www.ddc-deutsch.de/publikationen/pdf/DDC_22
  _Deutsch_Glossar.pdf
• Dewey-Dezimalklassification Theorie und Praxis
  (Chan Mitchell)
• Dewey Training Site
• http//www.oclc.org/dewey/resources/teachingsite/
  200801/default.htm
• Application practice by key users in WorldCat,
  e.g., LC, BL, DNB

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Discussion

• How will you associate Dewey numbers with
  existing bibliographic records?
• What kinds of materials will be classified by
  Dewey?
• Will you contribute standard numbers to WorldCat?
• Do you plan to assign access numbers as well as
  standard numbers?

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Some Useful DDC Links

• Dewey web site http//www.oclc.org/dewey/
• New Changed Entries         http//www.oclc.org
  /dewey/updates/new/default.htm
• Discussion papers http//www.oclc.org/dewey/disc
  ussion/default.htm
• 025.431 The Dewey blog http//ddc.typepad.com
• DDC Research Projects
• Classify http//deweyresearch.oclc.org/classify
  2/
• DeweyBrowser http//deweybrowser.oclc.
  org/ddcbrowser2/
• WorldCat Identities http//www.worldcat.org/ident
  ities/
• EDUG IT http//www.slainte.org.uk/edugit/
• DDC Applications
• BASE http//base.ub.unibielefeld.de/en/lab_brow
  se_menu.php?menu5
• NORART http//www.nb.no/baser/norart/
• NORBOK http//www.nb.no/baser/norbok2/norbok.php
  
• World Digital Library http//www.wdl.org/