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Building a Fedora Architecture to Support Diverse Collections

Building a Fedora Architecture to Support Diverse Collections. Jon Dunn Ryan Scherle Digital Library Program Indiana University. Indiana University Digital Library Program. Joint venture of Libraries and University Information Technology Services (UITS) formed in 1997

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Building a Fedora Architecture to Support Diverse Collections

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  1. Building a Fedora Architecture to Support Diverse Collections Jon Dunn Ryan Scherle Digital Library Program Indiana University

  2. Indiana University Digital Library Program • Joint venture of Libraries and University Information Technology Services (UITS) formed in 1997 • Bloomington-based; supporting 8 campuses • Engaged in digital collection building, infrastructure design/management, and research activities • Supporting library, archive, museum, academic department, and faculty-based digital collections projects

  3. Digital Library Content Types at IU • Books • Manuscripts • Photographs • Art images • Music audio • Video • Sheet music • Musical score images • Music notation files • …and more

  4. Current DLP Technical Environment: Access Systems • DLXS (University of Michigan) • Text • Finding Aids • Bibliographic information • IBM Content Manager • Locally-developed systems • Cushman Photograph Collection • DIDO: Digital Images Delivered Online • Variations2 • Page turners (sheet music, METS Navigator)

  5. Current DLP Technical Environment: Storage • DLP server disk storage • Tivoli Storage Manager • IU Massive Data Storage System (MDSS) • HPSS software • 1.6 petabytes of StorageTek and IBM automated tape • Access via FTP, PFTP, HSI

  6. Motivations for a repository • Centralize access and preservation functions for IU’s digital collections • Reduce DLP staff time and attention needed to create and maintain collections • Enable librarians, curators, archivists to digitize new collections • Enable digital preservation

  7. DL Infrastructure Project • Proposal funded by University Information Technology Services to reengineer digital library infrastructure around Fedora • Builds on experience with Fedora in context of EVIA Digital Archive (ethnomusicology video)

  8. Building services and tools around Fedora • Searching/browsing of metadata and content • End-user UI for display/navigation of metadata and content • Cataloging and ingest tools • Preservation services

  9. IU Content Models

  10. Focus on what you can do with an object Behaviors are primary Behaviors are the way all external processes will interact with the object Keep datastreams “private” Defining a content model

  11. Multiple media types Multiple brands Multiple tools Diversity

  12. Default dissem Metadata dissem getLabel getDefaultView getMetadata(type) getPreview getFullView getAssetDefinition Standard disseminators • All objects subscribe to the default disseminator • Most objects subscribe to the metadata disseminator • Most objects subscribe to type-specific disseminators

  13. Collection obj Default dissem Metadata dissem Collection dissem Image obj Image obj Default dissem Default dissem Metadata dissem Metadata dissem Image dissem Image dissem Simple images • Each image is a single Fedora object • Images are available in a variety of sizes • Each image belongs to one or more collections

  14. Collection obj Default dissem Metadata dissem Collection dissem Book obj Book obj Default dissem Default dissem Metadata dissem Metadata dissem Paged dissem Paged dissem Page obj Page obj Page obj Page obj Default dissem Default dissem Default dissem Default dissem Metadata dissem Metadata dissem Metadata dissem Metadata dissem Image dissem Image dissem Image dissem Image dissem

  15. Image getThumbnail getScreenSize getLarge getMaster Video getSmilFile playSmilFile getStructMap getActionObject getObjectID PagedImage getNumChildren getChildren PagedText getSummary getChunkList getChunk(label) getRawText getFriendlyText getTextPage(num) Printable getPrintableVersion Object-level disseminators

  16. Collection getSize listMembers(start,max) CollectionRender renderItemPreview(pid) renderItemFullView(pid) CollectionPagedImage viewPageTurner(pid, pagenum) CollectionPagedText viewText(pid, pagenum, style) viewChunk(pid, label, style) viewPage(pid, num, style) Collection-level disseminators

  17. Image Demos • Sample Image • Frank M. Hohenberger Collection • U.S. Steel Collection

  18. But what about the metadata? • Different content types have different types of metadata • MARC for general library holdings • MODS for collections we catalog • TEI for textual collections • EAD for archival collections • Combinations: Some items need METS for structure, TEI for text, MODS for description, etc.

  19. The solution: METS • No, not the Fedora METS • METS within a datastream, and everything else within the METS • A standard way of dealing with DC, MODS, technical, structural, provenance, process, etc. • Sample Image

  20. Simple Image DC THUMBNAIL SCREEN LARGE METADATA RELS-EXT Paged Object DC METADATA RELS-EXT Collection DC METADATA INGEST_CONFIG Implementing the disseminators

  21. Want more info? More detailed content model pages are available on our project wiki.

  22. IU Fedora Tools

  23. Ingest Tool The Ingest Tool transforms raw metadata and media files into Fedora objects that conform to our content models. EAD MODS JPG PDF Ingest Tool FOXML Datastreams Fedora

  24. METS Navigator • METS Navigator is a METS-based system for displaying and navigating multi-image digital objects. • It was built to be extendible and configurable. • Web pages with navigational structure are built from metadata in the repository. • Available from http://metsnav.sourceforge.net

  25. Demos Default METS Navigator Collection Jane Johnson Collection

  26. Using METS Navigator with Fedora • METS document must meet minimal format requirements • Logical and physical structMap • Files marked with USE and GROUPID attributes • Files are URLs that point to Fedora • METS Navigator may be called from a disseminator, but it is better if called separately. • Full integration instructions

  27. Cataloging tools • No good solutions for non-MARC descriptive/structural metadata creation • Some exist for specific domains: e.g. art image cataloging • Need content- or collection-appropriate interfaces • Catalog directly into Fedora or into database? • Data synchronization issues • Common framework or separate tools? • Starting to investigate

  28. Delivery tools • Right now: collection-specific web sites • Moving towards: generic applications appropriate to content models • Examples: documentary photos, art images, books, sheet music… • May integrate components from other places (e.g. Virginia collector tool) • Exposing metadata to external services via OAI-PMH, SRU (for Metasearch)

  29. Other tools and services via Fedora Service Framework • Search tool • Expanded, with thesaurus support • Preservation integrity services

  30. Infrastructure Project Challenges • Time and resources vs. scope of work • Sorting out old collections – digital archeology • Implementing new infrastructure while continuing to do new projects • Maintaining current functionality

  31. Infrastructure Project Challenges • Metadata entry / cataloging tool design • Integration with MDSS/HPSS - classes of storage • Art images • Searching system • Preservation system

  32. Thank You! • Contact info: • Jon Dunn jwd@indiana.edu • Ryan Scherle rscherle@indiana.edu • Infrastructure project wiki: • http://wiki.dlib.indiana.edu/confluence/display/INF

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