Do real archivists use oai mid atlantic regional archives conference gettysburg pa october 31 2003
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Chris Prom Assistant University Archivist University of Illinois at Urbana-Champaign. Do Real Archivists Use OAI? Mid-Atlantic Regional Archives Conference Gettysburg, PA October 31, 2003. http://web.library.uiuc.edu/ahx/workpap/marac03.ppt. Goals. Examine rationale for archivists to use OAI

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Chris Prom Assistant University Archivist University of Illinois at Urbana-Champaign

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Do real archivists use oai mid atlantic regional archives conference gettysburg pa october 31 2003

Chris Prom

Assistant University Archivist

University of Illinois at Urbana-Champaign

Do Real Archivists Use OAI?Mid-Atlantic Regional Archives ConferenceGettysburg, PAOctober 31, 2003

http://web.library.uiuc.edu/ahx/workpap/marac03.ppt


Goals

Goals

  • Examine rationale for archivists to use OAI

  • Describe my involvement in the University of Illinois Mellon OAI project

  • Speculate on OAI’s present and future

  • Suggest how archivists may wish to get involved with OAI


Should archivists use oai

Should Archivists Use OAI?

  • OAI use growing, well-supported, (relatively) simple

  • NSDL base format, NCSTRL project

  • Allows metasearches across projects and data types (not content specific)

  • DL projects for archives, manuscripts, photos, artifacts, objects use a variety of metadata standards

  • Provides wider exposure for collections

  • University of Michigan OAIster service illustrates both promise and problems


Chris prom assistant university archivist university of illinois at urbana champaign

Why archivists should use OAI. . .


Chris prom assistant university archivist university of illinois at urbana champaign

???


Chris prom assistant university archivist university of illinois at urbana champaign

NOT a link to NAACP

visual materials finding aid


Chris prom assistant university archivist university of illinois at urbana champaign

Found! (. . . 20 mins later)

5,000+ items! (11 online)


Uiuc mellon project goals

UIUC Mellon Project Goals

  • Test feasibility of harvesting, searching cultural heritage with OAI

  • Develop data provider tools that produce usable OAI records from disparate sources (MARC, EAD, databases, etc)

  • Build open-source service provider tools

  • My role: EAD/OAI

    • assess structural problems in mapping to OAI

    • develop an effective crossmapping

    • allow basic searching in an OAI environment

    • test effectiveness of the search

    • provide proof of concept


Our approach

Our approach

  • “Dumbing down” metadata has benefits

  • Examined EAD encoding standards

  • Generated multiple OAI records for one EAD

    • top-level record drawn from <eadheader> and <archdesc>

    • mini records from <dsc>, with relation to top level

  • Preserve context for “hits” by linking user to finding aid in the search/retrieval mechanism

  • relations between levels in the finding aid rendered implicitly by our service provider, not within the OAI record


Our data and service providers

Our Data and Service Providers

  • OAI Repository (Data Provider)

    • Snapshot of ~5,500 EAD finding aids mirrored on UIUC server

    • responds to HTTP get and post with ASP scripts and XSLT stylesheet to provide requested data

    • Records produced from EAD include XPointer

    • When EADs are split into their subordinate components, Xpointers identify the individual parts

  • Service Provider

    • Server-side scripts use the XPointers in DC identifier tag for rendering and linking

    • Xpointer used to move user deep in finding aid, preserve context


Xpointer

XPointer

  • WC3 Recommendation, March 2003: http://www.w3.org/XML/Linking

  • Can identify XML fragments using a superset of the XPath syntax, e.g. xyz.xml#xpointer(//dsc[1]/c01[2]/c02[3]/c03[10])

  • When EADs are split into their subordinate components, Xpointers identify the individual parts

  • To make it work, both data providers and service providers would need to share a set of assumptions about HOW it should work


Chris prom assistant university archivist university of illinois at urbana champaign

<rdf:RDF> <rdf:Description> <dc:identifier> http://…/…/test.xml#xpointer(//dsc[1]/c01[8]/c02[5]/c03[244]) </dc:identifier> <dc:title>Toensing, Richard</dc:title> <dc:type>text</dc:type>

<dc:type>archives or manuscripts</dc:type>

<dc:type>file</dc:type>

<dcterms:isPartOf>

<rdf:Description>

<dc:identifier> http://…/…/test.xml#xpointer(//dsc[1]/c01[8]/c02[5]) </dc:identifier>

<dc:title>Various Composers</dc:title>

</rdf:Description>

</dcterms:isPartOf>

</rdf:Description>

</rdf:RDF>


Simple search http oai grainger uiuc edu oai search

Simple Searchhttp://oai.grainger.uiuc.edu/oai/search


Search results

Search Results


Full record

Full Record


Hit in context of finding aid

Hit in Context of Finding Aid


What i learned

What I learned

  • Using OAI can exposure your collections to new audiences

  • Not good enough to harvest from image databases, nor just give just top-level link to FA

  • But many users confused when stumble on a finding aid; “where’s the beef”

  • An “archives friendly” service provider would

    • . . . Serve as basis for cross-repository searches

    • . . . Reenginner the notion of what is a finding aid by allowing access from the back end

    • . . . Undo some of the damage inflicted when archival materials are treated as items

    • . . . need to reconstruct context using local mirrors of the ead document


The future

The Future

  • OAI Currently better suited to representing digital objects than descriptive data

  • Service providers currently limited in number, 16 listed on openarchives.org

  • Will OAI take off?

  • IMLS Digital Collections and Content Project: (http://imlsdcc.grainger.uiuc.edu/)


Data provider options

Data Provider Options

  • If you want to provide dynamic (full) OAI metadata

    • Metadata items in Relational database

      • Map fields or pages to DC record

      • Use webscripting language to respond to harvester requests

    • XML, e.g. Finding aid (as a digital object)

      • map from <eadheader> and <archdesc>

      • use encodinganalog recommendations from RLG Best Practices or pass entire EAD file with XSD schema

    • metadata for digital objects linked from EAD???

      • use XSLT and XPointer to provide context and allow service providers to replicate hierarchical structure of EAD.

      • Depends on SP’s ability to handle xpointer


Data provider options cont

Data Provider Options, cont.

  • Static OAI metadata

    • Suitable for small collections which are not growing

    • All metadata should be contained in a single xml file on a webserver

    • Projects which will harvest metadata (e.g. IMLS Digital Collections and Content) may be able to provide assistance in conversion.


Resources

Resources

  • OAI website:

    • http://www.openarchives.org/

  • UIUC Provider Tools

    • http://uilib-oai.sourceforge.net/

    • http://sourceforge.net/projects/uilib-ead/

  • Library Hi Tech, Vol 21, No. 2, special issue on OAI

  • Further implementation guidelines

    • http://dli.grainger.uiuc.edu/publications/twcole/jcdl-oai/JCDL_2003_OAI_Intro.ppt

  • This powerpoint:

    • http://web.library.uiuc.edu/ahx/workpap/marac03.ppt


Do real archivists use oai mid atlantic regional archives conference gettysburg pa october 31 20031

Chris Prom

Assistant University Archivist

University of Illinois at Urbana-Champaign

Do Real Archivists Use OAI?Mid-Atlantic Regional Archives ConferenceGettysburg, PAOctober 31, 2003

http://web.library.uiuc.edu/ahx/workpap/marac03.ppt


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