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News from the Digital Library

News from the Digital Library. The Metadata Encoding and Transmission Standard; the Open Archival Information System. Merrilee Proffitt e(X)literature / Digital Cultures Project April 2003. A Telling Example. Goals of the Digital Library . Collection Access Preservation.

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News from the Digital Library

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  1. News from the Digital Library The Metadata Encoding and Transmission Standard; the Open Archival Information System Merrilee Proffitt e(X)literature / Digital Cultures Project April 2003

  2. A Telling Example

  3. Goals of the Digital Library • Collection • Access • Preservation

  4. Unlike books (or papyrus) “bits …. don’t do well with benign neglect” Problems with digital preservation

  5. Open Archival Information System Reference Model • Framework for understanding and applying concepts needed for long-term preservation of digital information • Model targeted to several categories of user • Already widely adopted as starting point in digital preservation efforts

  6. OAIS Functional Entities SIP = Submission Information Package AIP = Archival Information Package DIP = Dissemination Information Package

  7. Information Package Variants • Submission Information Package • Negotiated between Producer and OAIS • Sent to OAIS by a Producer • Archival Information Package • Information Package used for preservation • Includes complete set of Preservation Description Information for the Content Information • Dissemination Information Package • Includes part or all of one or more Archival Information Packages • Sent to a Consumer by the OAIS

  8. Relevance of the OAIS • Offers common ground for discussion • Provides common terminology and concepts • Conceptual framework for building repository systems for digital content • Two components of Reference model • Functional model • Information model: model for packages of information

  9. Reformatted to digital “Born digital” Simple Complex Digital (Library) Objects Digital Library Objects can be…

  10. Structural metadata • Maps physical files (digital assets) to logical items (complex digital objects) • Scanned print material • A/V material • Multimedia presentations

  11. Other Metadata • All types of digital objects have other (non-structural) metadata • descriptive • MARC, Dublin Core, etc. • administrative • rights • technical • format details • Standards exist or emerging for these

  12. METS Scope • Supports • Structural metadata • complex reformatted or born digital objects • Metadata wrapper framework • descriptive, administrative, structural, etc. • structural required • others use namespaces to reference “extension schemas”

  13. METS Scope • Data transfer syntax • between applications • between institutions • Driver for applications • page turner • audio player • multimedia presentation

  14. METS History • Making Of America II project 1997-2000 • METS “born” February 2001 • METS 1.0 July 2002 • Current version is METS 1.2

  15. METS metadata “buckets” METS Header optional optional optional optional Descriptive metadata Administrative metadata Behavioral metadata required optional File Inventory Structure map

  16. METS and OAIS framework • Submission Information Package (SIP) • METS as transfer syntax • Dissemination Information Package (DIP) • METS as transfer syntax • METS as input to display applications • Archival Information Package (AIP) • METS stored internally in an archive

  17. METS Initiative • Establishment of an editorial board with an editor-in-chief • Complete work on schema, ensure support for other digital library work • Encourage field testing of METS and gather feedback • Encourage tools development • Identification of “best practice” extension schemas

  18. Current users • Current users include • UC Berkeley • California Digital Library • NYU (digital archive) • Florida Center for Library Automation • Oxford University • British Library • National Library of New Zealand • Bibliothèque nationale de France • Harvard • Library of Congress • EU MetaE project • Michigan State • University of Virginia • MIT • RLG • more daily...

  19. METS summary • Closely related to OAIS information package • Large and growing community of digital library implementers • Very flexible • Flexibility means that profiles are necessary for interoperability

  20. METS homepage: http://www.loc.gov/standards/METS OAIS Reference Model: http://www.ccsds.org/RP9905/ RP9905.html Merrilee Proffitt mgp@notes.rlg.org For More Information…

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