Increasing points of access – a guide to metadata harvesting

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    Increasing points of access – a guide to metadata harvesting - Presentation Transcript

    1. Open Access MILE Conference London January 28 th 2009 A Picture’s Worth a Thousand Euros – Return on Investment? How to improve the cultural AND commercial potential of your image collection. Niamh Brennan Trinity College Dublin Garret McMahon Trinity College Dublin Increasing points of access – a guide to metadata harvesting
    2. What’s the issue?
      • “Providing the public with digital access to a collection of images is a necessity, but simply publishing them online doesn't make them accessible…”
      • - Charlotte Sexton, Deputy Head New Media, The National Gallery
    3. Interoperability… What’s the solution? “… the ability of systems, services and organisations to work together seamlessly toward common or diverse goals”.
    4. Interoperability for discovery of and access to images
      • Requires OPEN STANDARDS for both
      • Communication between systems (digital archives, repositories, etc.)
      • and
      • 2 . Description of resources and collections
    5. OAI Metadata Harvesting – What is it?
      • OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) is a protocol developed by the Open Archives Initiative
      • Based on standards that are Open and freely available
      • Can support any metadata schema
      • Can be incremental
      • Supports federated discovery services based on aggregated and shared metadata
    6.  
    7.  
    8.  
    9. What are they using?
      • Open Archives Initiative (standard) compliant repositories
      • Agreed set of metadata
      • OAI Harvester (+ validator, aggregator)
      • Front end
    10. OAI Harvesting: How it works
    11. OAI Harvesting: How it works OAI Harvester Get List
    12. Discovery of, and access to, images across distributed digital libraries/archives can be achieved easily and cost-effectively via metadata harvesting
    13. Interoperability for discovery of and access to images
      • Requires OPEN STANDARDS for both
      • Communication between systems (digital archives, repositories, etc.)
      • and
      • 2 . Description of resources and collections
      • Research publications
      • Etheses
      • Epublishing/Grey Literature
      • Images
    14.  
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    16.  
    17.  
    18.  
    19.  
    20.  
      • Higher Education Authority -funded under Strategic Innovation Fund
      • National Development Plan
      • Research as critical to economic development
      • National research profile
      • Managed by the Irish Universities Association
      IReL-Open Initiative
    21.  
    22. OAI Harvesting is not a panacea It needs help!
    23.  
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    25.  
    26. From: Sefton, Peter (2009) What the OAI-ORE protocol can do for you, [blog entry], PSetfton, 14/10/2008 http://ptsefton.com/2008/10/14/what-the-oai-ore-protocol-can-do-for-you.htm Australian University Repository Census (AUIRC) search Australian Research Repositories Online to the World (ARROW) search
    27.  
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    31. Combined approach:
      • Standardisation & mapping – agreement on same terms where possible
      • Dumbing down & mapping – exposure of lowest common denominator terms only eg 1 date field only
      • Normalisation at harvester end – harvester/validator automatically ‘understands’ and re-labels data
    32. Agreement on a Core Set of Metadata Elements for harvesting
      • Use Simple [i.e. unqualified] Dublin Core as the foundation for the Core Set
      • Ensure that the Core Set adequately represents the essential fields covered by the major metadata schemas
      • Keep the number of mandatory fields to a minimum
      • Map the corresponding element/s in richer metadata schemas used locally to the elements in the Core Set
      • Expose only the elements corresponding to the Core Set for harvesting
      • At the local level document the mapping [cross-walk] used (eg. CDWAlite to Dublin Core, VRA Core to Dublin Core) and which elements are exposed for harvesting
    33. Trintiy College Dublin VRA 3.0 to Qualified Dublin Core Crosswalk– page 1
    34. VRA Core to IEEE LOM VRA Core 3.0/4.0/IEEE LOM Crosswalk for UCD School of Architecture/National Digital Learning Repository (NDLR) harvest/bulk upload– Version 2.0 [NB/JC 2009]
    35. Where is the Value?
      • Maximum impact & exposure – works for commercial agencies and for publicly-funded institutions
      • Lightweight, easy implementation
      • Re-use of expensively created metadata for multiple purposes
      • Local control /national, international, specialist applications
    36. Interoperability… What’s the solution? “… the ability of systems, services and organisations to work together seamlessly toward common or diverse goals”.
    37.  
    38.  
    39.  
      • OPENING UP THE GATES OF KNOWLEDGE: A BEGINNERS GUIDE TO OAI-PMH , TrustDR Supporting Report , Version Control: V1 8/May/06 Authors: David Dripps, John Casey & Jackie Proven http://trustdr.ulster.ac.uk/work_in_progress/supporting_reports/Opening_up_the%20Gates_OAI-PMH.php
      • OAI for Beginners - the Open Archives Forum online tutorial http:// www.oaforum.org /tutorial/
      • National Library of Australia initiatives using the Open Archives Initiative protocol for metadata harvesting http://www.nla.gov.au/nla/staffpaper/2003/boston1.html#2a
      • Dewatripont, M et al. (2006) Study on the economic and technical evolution of the scientific publication markets in Europe. Final Report. January 2006. DGResearch, European Commission. Available at: http://ec.europa.eu/research/science-society/pdf/scientific-publicationstudy_en.pdf
      • Hegg, Kevin and Knab, Andreas. (2008) Interoperability: 2008 ARLIS/NA-VRA Summer Educational Institute, July 11, 2008   http://www.vraweb.org/seiweb/SEI2008_Presentations/SEI2008_Interoperability.ppt
      • Baca, Murtha (2008) Using Metadata Schemas to Encode and Disseminate Information and Images, MILE Metadata Classification Conference ‘Semantics, Semiotics, and Structures’, London, 18 January 2008
      • http://www.mileproject.eu/asset_arena/document/AL/BACAFORMILE@LONDON2008PART1FINAL.PDF
      • Baca, Murtha (2008) Creating Integrated Access to Collections On Line; Metadata Harvesting, MILE Metadata Classification Conference ‘Semantics, Semiotics, and Structures’, London, 18 January 2008 http://www.mileproject.eu/asset_arena/document/AL/BACAFORMILE@LONDON2008HARVESTINGFINAL.PDF
      • Digital Library Federation (2007) Best Practices for OAI Data Provider Implementations and Shareable Metadata: A joint initiative between the Digital Library Federation and the National Science Digital Library. http://webservices.itcs.umich.edu/mediawiki/oaibp/?TableOfContents
      • Sefton, Peter (2009) What the OAI-ORE protocol can do for you, [blog entry], PSetfton, 14/10/2008
      • http://ptsefton.com/2008/10/14/what-the-oai-ore-protocol-can-do-for-you.htm [ accessed 26/01/09
      • DRIVER Guidelines Version 2.0 (2008): Guidelines for content providers - exposing textual resources with OAI-PMH, November 2008 http://www.driver-support.eu/documents/DRIVER_Guidelines_v2_Final_2008-11-13.pdf [ accessed 26/01/09 ]
      • Arms, Caroline R. (2003) Available and useful: OAI at the Library of Congress in Library Hi Tech 21, (2), 2003, pp 129 - 139 http://memory.loc.gov/ammem/techdocs/libht2003.html [ accessed 26/01/09 ]
    40. Open Access Niamh Brennan Trinity College Dublin Phone: +353 1 896 1646 Email: [email_address] Garret McMahon Trinity College Dublin Phone: +353 1 896 1646 Email: [email_address]
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