1. Diane Vizine-Goetz Senior Research Scientist, OCLC Research Joan S. Mitchell Editor in Chief, DDC Michael Panzer Assistant Editor, DDC Publisher and Librarian Symposium CQ Press, Washington, D.C. June 29, 2010 DDC and BISAC: The Authority File, the Mappings and Opportunities in a Linked Data World

2. OCLC BISAC Initiatives OCLC researchers and Dewey editors are collaborating on a project to create authority records for BISAC subject headings and add Dewey numbers to the records BISAC subject headings, including usage notes, are coded according to the MARC 21 format for authority data Dewey numbers from DDC 22, the latest edition of Dewey, are applied to the records by the Dewey team

3. The Authority File and BISAC-DDC Mappings Base file = 2007 edition Manual & programmatic conversion Updated to reflect 2008 and 2009 additions and changes MARC21 Authority Format 3,672 Records (includes inactive codes) 7,449 DDC numbers (assigned by Dewey editors) 4,136 Usage notes

4. MARC21 Authority Format: BISAC Code

5. MARC21 Authority Format: BISAC Literal

6. Coding the Literal (1) MARC coding 150 __ $a COMPUTERS / Programming / Games 150 __ $a COMPUTERS $x Programming $x Games 150__$a COMPUTERS / Buyer's Guides 150__$a COMPUTERS $v Buyer's Guides 150__$a GARDENING / Regional / Canada 150__$a GARDENING $x Regional $z Canada

7. Coding the Literal (2) MARC coding 150 __ $a COMPUTERS / Programming / Games 150 __ $a COMPUTERS $x Programming $x Games 150__$a COMPUTERS / Buyer's Guides 150__$a COMPUTERS $v Buyer's Guides 150__$a GARDENING / Regional / Canada 150__$a GARDENING $x Regional $z Canada Topic Form/genre Place

8. Cross references and related headings

9. Usage Notes (1)

10. Usage Notes (2)

11. Dewey Numbers: Mapping guidelines The topic represented by the subject heading either equals/approximates the whole of or is explicitly included in that number If the topic matches more than one Dewey number, multiple numbers may be added

12. Examples DDC: 1 083 04 152.47 $2 22 $5 OCoLC-D 150 __ SELF-HELP $x Anger Management DDC: 2 083 04 372.7 ‡2 22 ‡5 OCoLC-D 083 04 510.712 ‡2 22 ‡5 OCoLC-D 150 __ EDUCATION ‡x Teaching Methods & Materials ‡x Mathematics DDC: Many 150 __ BIOGRAPHY & AUTOBIOGRAPHY ‡x Rich & Famous

13. BISAC authority records in OCLC Research Terminology Services (1) What it is: A suite of thesauri and controlled vocabularies provided by OCLC Research as an experimental research service What it does: Provides search access to eight controlled vocabularies and thesauri What you get: Concepts/headings in a controlled vocabulary Relationships for a concept/heading including equivalence, hierarchical, and associative

14. BISAC authority records in OCLC Research Terminology Services (2) Results in: A variety of formats (HTML, MADS, MARC XML, SKOS, and Zthes) Who can use it: Anyone and everyone for noncommercial use Usage limits: None Query Protocols: SRU

15. OCLC Research Terminology Services

16. BISAC authority record (for machines)

17. BISAC authority record (for humans)

18. BISAC authority record browse (for humans)

19. The Dewey Ecosystem Translations Mappings Linked Data

20. The two faces of Dewey Organization sideDiscovery side

21. Intrasystem relations across translations Dewey translations provide additional terminology

22. Translations

25. Mappings and Crosswalks DEWEY LCSH MeSH SWD RAMEAU SAB BISAC SEARS CSH UDC LCC SAO Nuovo Soggettario

28. Linked data: Traditional identifiers to URIs http://dewey.info/class/794.8/ http://dewey.info/class/794.8/about.en http://dewey.info/class/794.8/about.de MARC: 082 00 ‡a 794.8 ‡2 22 Library schemesIndustry schemes Linked data sets

29. Linked data sets: dewey.info Experimental platform for linked DDC data Available now: Linked data version of the DDC Summaries in eleven languages Features include: Actionable URIs for every class of the DDC Summaries Classification semantics encoded in SKOS Representations for machines and for humans Data is reusable under a Creative Commons BY-NC-ND license

30. HTML view across all versions in all languages

31. Data view across all versions in all languages

32. The Opportunities: Exploiting Relationships between BISAC and Other Resources

33. Three use cases Starting with: 1.Dewey number 2.BISAC heading 3.BISAC code

34. Classify United States United Kingdom Canada GermanyAustraliaSweden EcuadorLuxembourgFrance Switzerland Visitors - Top Countries

35. Retrieve a record for a title

36. Acquire a Dewey number

37. Acquire BISAC terms based on Dewey number

38. Dewey number: 794 Mapped BISAC terms to 794* COMPUTERS—Programming—Games GAMES—Board GAMES—Board—Checkers GAMES—Board—Chess GAMES—Video—Electronic...

40. Start with BISAC BISAC headings

41. Using BISAC mapping to add context

42. Turning it around: specific BISAC heading BISAC code in your metadata: CKB007000 Looking up literal and mapping: COOKING—Beverages—Beer —> 641.623 Deriving Dewey Summaries as broad subject description: http://dewey.info/class/641/about.en: Food & drink http://dewey.info/class/641/about.es: Alimentos y bebidas http://dewey.info/class/641/about.ar: الأغذية والمشروعات

43. BISAC literal + broad Dewey caption

44. Seeing Standards: A Visualization of the Metadata Universe http://www.dlib.indiana.edu/~jenlrile/metadatamap/

45. Selected Links OCLC Research Terminology Web Services http://tspilot.oclc.org/resources/index.html Classify http://classify.oclc.org/classify2/ Dewey.info http://dewey.info/