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MetaLib Workshop Die Deutsche Bibliothek

MetaLib Workshop Die Deutsche Bibliothek. In the Shadow of Brunelleschi’s Dome A lesson in metadata development. Stuart L. Weibel Director, Dublin Core Metadata Initiative. Frankfurt, Germany October 21, 2002. DC-2002 Florence – October 13-17.

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MetaLib Workshop Die Deutsche Bibliothek

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  1. MetaLib WorkshopDie Deutsche Bibliothek In the Shadow of Brunelleschi’s Dome A lesson in metadata development Stuart L. Weibel Director, Dublin Core Metadata Initiative Frankfurt, Germany October 21, 2002

  2. DC-2002Florence – October 13-17 • 215 participants from 25 countries • Conference papers, tutorial program, Working group meetings • Corporate metadata track • Accessibility metadata track • Semantic Web Advanced Development track • DC-Government, Environment, Education, Library working groups • Developments in Agent element qualifiers, Type list additions

  3. Participation in the Initiative • Community of over 1500 experts and practitioners from 1000 organizations in 50 countries • 15 working and interest groups • Libraries, (digital) libraries, education, museums, governments, supra-governmental organizations, environment, commerce, networking infrastructure

  4. dc:description • What is the value we are creating? • Easier discovery • Better organization • Improved manageability • Greater liquidity of information • A community of social capital investment

  5. Stockholders Raw materials Management Value Creation Process Products and Services Customers Creation of Value in the Marketplace of Products

  6. Ideas Social Capital Stakeholders become Adopters Stakeholders Management Value Creation Process Creation of Value in the Standards Marketplace Derivative value created by adopters in applications, data, and services

  7. dc:identifier • What makes DCMI uniquely identifiable (and valuable) as a metadata initiative?

  8. The I’s have it… • International • 20 countries represented at DC-2002 • Independant • OAI, RDF Recombinant metadata, cross disciplinary consensus • Open (Influenceable) • Governance and decision-making based on open participation and public process

  9. dc:relation • What is the relationship of DC to the larger resource description community, and to other metadata formats?

  10. The Resource Grid stewardship stewardship high low high low Books Journals Newspapers Government docs Audiovisual Maps Scores Freely-accessible web resources Open source software Newsgroup archives low low uniqueness Special collections Rare books Local/Historical Newspapers Local history materials Archives & manuscripts Theses & dissertations • Institutional repositories • ePrints • Learning objects/materials • Research data high high

  11. Metadata Standards in the Resource Grid stewardship high low Books Journals Freely-accessible web resources MARC, DC ONIX, MPEG DC low uniqueness Special collections MARC, METS, EAD, DC, TEI DC, DDI, IEEE/LOM, FGDC, EAD, TEI, SCORM high

  12. dc:format[s] • The DC community includes many overlapping communities of practice • HTML • Yes, people are still doing it • XML • More structure, in well-defined packages that look familiar to us • RDF • Yes, people are still trying to figure it out • (and the SWAD group is here to help!)

  13. Pre-coordinated interoperability • Pre-coordinated agreements Agreed-upon semantics Agreed-upon structure Agreed-upon syntax • MARC/AACR2 • Well established, rich metadata • DC and XML-Schemas (ala OAI) • Cross disciplinary metadata language

  14. XML Schemas declare the particular element sets spoken by a given OAI Server Discipline-specific schemas are encouraged DC is the base interoperablity element set

  15. OAI interoperability derives from one (DC) or more common schemas per server OAI-1 OAI-2 OAI-3 OAI-4

  16. Recombinant Interoperability • Agreed upon architectures for declaring semantics, with dynamically defined semantics • Semantic architecture • DC core elements and qualifiers • Discipline-specific extensions (Application Profiles) • Syntactic architecture • Resource Description Format (RDF) • RDF Schema declarations • Property subclasses inherit attributes of parent classes • Interoperability granularity is at the element level rather than the schema level

  17. How to do it • RDF schemas declare elements as sub-properties of DC elements where applicable • Eg. AGLS:title is a sup-property of DC:title • Define discipline-specific extensions as necessary • Cross-application indexing works for common elements (element granularity rather than schema granularity) • Organizations retain branding value of their respective namespaces while achieving global interoperability • Registered Schemas will promote ability to identify and index related data sets

  18. Element Granularity Interoperability FAO-AGMES Declared as Subproperties of DC DC AGLS Declared as Subproperties of DC All common properties searchable as DC elements

  19. dc:whither? http://www.comune.firenze.it/servizi_pubblici/turismo/C05G.jpg

  20. Brunelleschi’s Domeas a metaphor for technology development • Francesco Talenti’s 1366 design for Il Duomo called for a dome that surpassed the architectural limits of his day • 50 years passed before the genius of Brunelleschi’s dome would be conceived and executed • These people had Faith! • In themselves, and in the march of progress

  21. And our lessons… • Move forward with solutions as we can conceive them… • Have confidence in our ability to surmount the challenges… • Remember that the benefit in our efforts is in the quiet, unobtrusive implementation of standards

  22. The Core, the Core, the Core • The Dublin Core is the dominant standard for cross disciplinary resource discovery metadata on the Internet • The semantics of the Core have not changed since DC-3 • Stable and useful since 1996 • Standardized and widely accepted

  23. And More,and more, and more • More communities participating • More extensions to register • More government and supra-national adoption • More languages • More application profiles • More protocols to accommodate • More documentation needed to make it clearer and easier to deploy • More connections to other standards • This richness is evidence of success and a challenge to interoperability

  24. HTML  XHTML RDF and RDF Schemas XML XML Schema OAI OAI PMH Open URLs RSS DAML/OIL Many Challenges - Protocols are moving targets

  25. MARC and its many variants IEEE-LOM/IMS SCORM FGDC EAD MPEG TEI XRML ODRML Ontologies METS and MODS More Standards

  26. Standards creation as an act of faith

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