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OCLC Research: Selected projects

OCLC Research: Selected projects. Eric Childress Larry Olszewski . Presentation for Dpto. Biblioteconomía y Documentación Universidad Carlos III de Madrid Madrid 29 February 2008. Agenda. About: OCLC OCLC Research Selected projects: VIAF (Virtual International Authority File)

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OCLC Research: Selected projects

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  1. OCLC Research:Selected projects Eric Childress Larry Olszewski Presentation for Dpto. Biblioteconomía y Documentación Universidad Carlos III de Madrid Madrid 29 February 2008

  2. Agenda • About: • OCLC • OCLC Research • Selected projects: • VIAF (Virtual International Authority File) • WorldCat Identities • DeweyBrowser • OCLC WorldMap

  3. OCLC • Founded 1967 in Ohio, U.S.A. • Non-profit • Dedicated to public purposes: • Reduce the rate of rise of library costs • Further access to information • World’s largest library cooperative • 60,000 libraries • 112 countries

  4. OCLC Offices Canada Mexico United States Australia China France Germany Netherlands Switzerland U.K.

  5. OCLC Services

  6. WorldCat • Number of bibliographic records: • 98,765,513 • How often a record is added: • Every 10 seconds • Number of holdings: • 1,219,355,469 • Number of countries represented: • 112 countries and territories around the world • Number of languages and dialects represented: • More than 470 • How often a request is filled through WorldCat Resource Sharing: • Every 4 seconds

  7. OCLC Research • A leading research center devoted to supporting OCLC’s public mission on behalf of libraries, archives and museums • Scientists, programmers, other staff work to explore issues, try new techniques, explore new technology, prototype new services. • OCLC Research has been instrumental in the development of: • PURLs (Persistent URLs) • Dublin Core • OAI (Open Archives Initiative) • SRU/W (Search & Retreive)

  8. VIAF (Virtual International Authority File) • Primary objectives: • Identify the same person or organization in multiple national authority files • Link the corresponding authority records • Value: • Potentially lowers the cost of authority work • Multiple authorized forms may co-exist • Better data-mining (including FRBR) and searching • VIAF will made available on the Web for wide use by libraries, search engines, others

  9. VIAF (cont.) • How VIAF works: • National libraries supply OCLC with national bibliographic files and authority files • OCLC-developed software: • Identifies key relationships (e.g., author name to works, to co-authors, to subjects) • Matches same author with different names • Distinguishes same name but different authors • Links between matched authority records are generated and stored

  10. WorldCat Identities • Using data mining techniques OCLC builds a summary page for persons and corporate bodies referenced in WorldCat bibliographic records (25 million+) • Data is derived from bibliographic data and authority records and holdings in WorldCat • Special features such as a publication timeline included:

  11. DeweyBrowser • Interface to 2.5 million WorldCat records with DDC numbers • Browse by DDC class • Display captions in English, French, German, Norwegian, Spanish, and Swedish • Supports facetted browsing: • Format • Language • OCLC audience level

  12. Some Global Aspects of WorldCat Materials w/non-US origins: 47.8 million (65%) Top 5: Germany: 8.8 million UK: 7.3 million France: 3.6 million Netherlands: 2.7 million Canada: 2.6 million Content Languages: 473 47% of WC non-English Top 5 non-English: German: 9.8 million French: 5.4 million Spanish: 3.3 million Dutch: 2.5 million Chinese: 2.0 million Non-English Metadata Language: 16.5 million (36 languages) Top 5: German: 5.4 million Dutch: 4.9 million French: 1.7 million Finnish: 0.7 million Japanese: 0.7 million

  13. OCLC WorldMap: Objectives • Geographically represent WorldCat data • Holdings by country of publication • Published languages • Published titles

  14. OCLC WorldMap: Objectives • Geographically represent data from other sources • Number of • Libraries • Volumes • Librarians • Registered users • Publishers • Cultural heritage institutions • Dollars spent • People

  15. OCLC WorldMap

  16. OCLC WorldMap

  17. OCLC WorldMap

  18. OCLC WorldMap

  19. Questions? Eric Childress Larry Olszewski • VIAF • http://www.oclc.org/research/projects/viaf/ • WorldCat Identities • http://orlabs.oclc.org/Identities/ • DeweyBrowser • http://deweybrowser.oclc.org/ddcbrowser2/index_spa.html • OCLC WorldMap • http://www.oclc.org/research/projects/worldmap ©2008 OCLC, Inc.

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