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Metadata: practice and practice

Metadata: practice and practice. Lorcan Dempsey VP Research and Chief Strategist CLIR/DLF. Managing Digital Assets: A Primer for Library and Information Technology Administrators   Charleston, SC February 4-6, 2005. Overview. Part 1 Part 2 Part 3 Part 4. Some themes.

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Metadata: practice and practice

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  1. Metadata:practice and practice Lorcan Dempsey VP Research and Chief Strategist CLIR/DLF. Managing Digital Assets: A Primer for Library and Information Technology Administrators   Charleston, SC February 4-6, 2005

  2. Overview • Part 1 • Part 2 • Part 3 • Part 4

  3. Some themes • Consolidation: fragmentation gets in the way • Industrialization: much of our metadata creation is a cottage industry: current approaches will not scale • Cost: value • Intellectual and machine: need to work harder to programmatically create metadata • Institutions and service: move from projects to service

  4. Example: Metasearch/portal Metadata is everywhere ;-)

  5. A ‘portal’ turned inside out … Common services I need a few references Content services Application services Presentation services

  6. Common services authentication Content services Application services Presentation services

  7. Directory: user profile Common services Content services Application services Presentation services

  8. Common services Query broker Content services Application services Presentation services

  9. Directory: service/collection description Common services Content services Application services Presentation services

  10. Common services Content: results list Content services Application services Presentation services

  11. Common services I’d like to get this book. Request broker Content services Application services Presentation services

  12. Common services Directory: ILL policy Content services Application services Presentation services

  13. Directory: service/collection description Common services Content services Application services Presentation services

  14. Common services Content: circ/ILL system Content services Application services Presentation services

  15. Common services I need this article too. Request broker Content services Application services Presentation services

  16. Common services openURL resolver Content services Application services Presentation services

  17. Common services Directory: local knowledge base Content services Application services Presentation services

  18. Nearly there … Common services Directory: service/collection description Content services Application services Presentation services

  19. Common services Content: article Content services Application services Presentation services

  20. Directory: user profile Directory: service/collection description Directory: ILL policy Authentication Common services Directory: local knowledge base Reference db OpenURL resolver Circ/ILL system Article db • Metadata for multiple entities required to support operations. • This picture could be extended in multiple ways. Request broker Query broker Content services Application services Presentation services

  21. Metadata as intelligence … • Know what resources are available • Know how to play a resource • Know provenance of a resource • Know what use policy governs a resource • Know how to ingest a resource • Know how to interact with a resource • Know how to compose/decompose resources • …

  22. Metadata? … allows people and machines to work smarter …

  23. Metadata? Schematized … … statements about … … resources

  24. Something about Resources

  25. … and will support multiple operations Discovery to delivery Digital asset management Publishing interfaces: intersections between user information spaces and library information spaces Resources: everything that moves • Multiple types of information Objects • Collections • Services • People • Organizations • Places • Terms • Formats • Rights • Business terms • License

  26. Descriptive Structural Technical Administrative Rights Preservation Tracking Provenance Different classes of metadata increasingly a part of complex object models • SCORM/Content package • METS • MPEG 21 • …

  27. EAD, MARC AMC, .. MARC, MODS, DC, RSLP, .. Onix, … MPEG, JPEG, TIAA-CREF… XML, RDF, OWL, … CSDGM, DDI, NBII, IVOA, … EGMS, AGLS, GILS, … GEM, DC-ED, IEEE-LOM, SCORM, … * Community? * * *

  28. So … • More than discovery … • More than information objects … • More than library …

  29. Something about schematized

  30. Application profile ‘Element set’ Information model Values/content Encoding Simple descriptive metadata!! Cataloging rulesControlled vocabs.… FRBRINDECSCIDOC … MARC21 DC VRA CoreMODSOnix … XML ISO2709 …

  31. OAI

  32. OAI Server#1 OAI Harvester Mergedresource OAI Server#2 Web Browser OAI Server#3 OAI-based mediation

  33. OAI • A way of ‘publishing’ processable metadata on the network • A way of synchronizing databases • And … • The same for resources themselves? • A nice building block for other services

  34. An example Following pages show some experimental services where OAI is used to ‘publish’ metadata. There is a WIKI interface to metadata stores managed under OAI.

  35. Tools Edit

  36. Interoperability • Recombinant potential • Economic and service issues • Cost

  37. Encoding Element set Content/values Encoding Element set Content/values Interoperability a factor at all these levels .. For example .. Examples: Z39.2/MARC/AACR DC OAI

  38. Importance of agreements • DC profile • Vocabularies

  39. This gives a context for discussing … • Traditional library practice • Strive for consistency at all three levels in the ISO 2709/MARC/AACR model • Institutionalised in standards, OCLC/RLG/LC, committees, … • Dublin Core • Consistency of element set • A small number of encodings • Content/values subject to separate agreement • OAI • A transport for resources. • No control over the transported resources • So …

  40. Something about collections

  41. Books • Journals • Newspapers • Gov. docs • CD, DVD • Maps • Scores Freely-accessible web resources • Research and learning materials • ePrints/tech reports • Learning objects • Courseware • E-portfolios • Research data • Untransferred records • Special collectionsArchives • Rare books • Local history materials • Archives & Manuscripts • Theses & dissertations Collections grid Stewardship high low low Uniqueness high

  42. Collections grid disclosure high low Publishing Amazoogle D2D low Reformatting high E-learning E-research Cultural heritage Digital asset management

  43. Bought materials Licensed materials Special collections/archives Research and learning materials Stewardship high low low Uniqueness high Some observations Metadata Cost/value Routine? Consolidated?

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