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Exploring the Role of DDC in Complex Knowledge Organization Environments

This article delves into the potential of the Dewey Decimal Classification (DDC) in complex Knowledge Organization (KO) settings. It covers the benefits, relationships with other KO tools, practical uses, training resources, and more. The DDC, with its language-independent representation, mappings, and interoperability, has a significant impact on various resources like WorldCat, libraries, and databases. Furthermore, it discusses the tools, mappings, and translations to enhance the usage and understanding of DDC.

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Exploring the Role of DDC in Complex Knowledge Organization Environments

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  1. The DDC at Universitätsbibliothek Wien Universitätsbibliothek Wien 29 April 2009 Joan S. Mitchell Editor in Chief, DDC OCLC mitchelj@oclc.org

  2. 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?

  3. 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

  4. 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

  5. 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

  6. WorldCat

  7. NORART

  8. NORBOK: Doktoravhandlinger

  9. World Digital Library

  10. 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

  11. 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

  12. Language-independent representation

  13. Translations

  14. 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

  15. Mappings to subject headings (2) • RAMEAU [French] • Schlagwortnormdatei (SWD) [German] • Nuovo Soggettario [Italian] • Sears Lista de Encabezamientos de Materia [Spanish]

  16. LCSH-DDC mappings in WebDewey

  17. SWD-DDC mappings in MelvilClass SWD-DDC mappings

  18. RAMEAU - DDC (broad level only) 620     $aAnesthesia$vLCSH (en ligne), 2005-02-21622 1  $aAnesthesia$vMeSH (en ligne), 2005-02-21624     $a610

  19. 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 (???)

  20. Tools using explicit and derived relationships • Classify • VIAF • WorldCat Identities

  21. 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

  22. Classify: Author search

  23. Classify: Search results

  24. Classify: Details

  25. Classify: Link to DeweyBrowser

  26. Paths to DDC numbers through VIAF Teresa, Mother

  27. Links between LC NA & PND via VIAF

  28. WorldCat Identities

  29. What are some uses of the DDC? • A few examples that focus on the use of the DDC to enhance browsing and retrieval . . .

  30. 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)

  31. 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)

  32. 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

  33. DeweyBrowser

  34. DeweyBrowser (German)

  35. DB example

  36. BASE (Bielefeld Academic Search Engine)

  37. BASE: Browse results

  38. Shelfview: Book search

  39. Shelfview: Virtual DDC view

  40. 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

  41. 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?

  42. 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/discussion/default.htm • 025.431: The Dewey blog http://ddc.typepad.com • DDC Research Projects • Classify http://deweyresearch.oclc.org/classify2/ • DeweyBrowser http://deweybrowser.oclc.org/ddcbrowser2/ • WorldCat Identities http://www.worldcat.org/identities/ • EDUG IT http://www.slainte.org.uk/edugit/ • DDC Applications • BASE http://base.ub.unibielefeld.de/en/lab_browse_menu.php?menu=5 • NORART http://www.nb.no/baser/norart/ • NORBOK http://www.nb.no/baser/norbok2/norbok.php • World Digital Library http://www.wdl.org/

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