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Adrian Stevenson (UKOLN) – Linked Open Copac Archives Hub (LOCAH) project – use of Timemap for visualising linked data

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Pecha Kucha presented at Repository Fringe 2011.

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Adrian Stevenson (UKOLN) – Linked Open Copac Archives Hub (LOCAH) project – use of Timemap for visualising linked data

  1. 1. LOCAH Project <ul><li>L inked O pen C opac and A rchives H ub </li></ul><ul><li>Funded by #JiscEXPO 2/10 ‘Expose’ call </li></ul><ul><ul><li>1 year project. Started August 2010 </li></ul></ul><ul><li>Partners & Consultants: </li></ul><ul><ul><li>UKOLN – Adrian Stevenson, Julian Cheal </li></ul></ul><ul><ul><li>Mimas – Jane Stevenson, Bethan Ruddock, Yogesh Patel </li></ul></ul><ul><ul><li>Eduserv – Pete Johnston </li></ul></ul><ul><ul><li>Talis – Leigh Dodds, Tim Hodson </li></ul></ul><ul><ul><li>OCLC - Ralph LeVan, Thom Hickey </li></ul></ul><ul><ul><li>Ed Summers </li></ul></ul><ul><li>http://blogs.ukoln.ac.uk/locah/ </li></ul>
  2. 2. Archives Hub and Copac <ul><li>UK National Data Services based at Mimas </li></ul><ul><li>Archives Hub is an aggregation of archival descriptions from archive repositories across the UK </li></ul><ul><ul><li>http://archiveshub.ac.uk </li></ul></ul><ul><li>Copac provides access to the merged library catalogues of libraries throughout the UK, including all national libraries </li></ul><ul><ul><li>http://copac.ac.uk </li></ul></ul>
  3. 3. What is LOCAH Doing? <ul><li>Part 1: Exposing Archives Hub & Copac data as Linked Data </li></ul><ul><li>Part 2: Creating a prototype visualisation </li></ul><ul><li>Part 3: Reporting on opportunities and barriers </li></ul>
  4. 4. Linked Data Design Issues <ul><li>URIs </li></ul><ul><li>LD Design Issues </li></ul><ul><li>Triples </li></ul>http://www.w3.org/DesignIssues/LinkedData.html
  5. 5. Triples <ul><li>Triples statements </li></ul><ul><ul><li>‘ Things’ have ‘properties’ with ‘values’ </li></ul></ul><ul><ul><li>Subject – Predicate - Object </li></ul></ul><ul><li>Triples are the basis of RDF </li></ul>Archival Resource Repository Provides Access To The Rolling Stones Keith Richards Is Member Of
  6. 6. We’re Linking Data! <ul><li>If something is identified, it can be linked to </li></ul><ul><li>We take items from one dataset and link them to items from other datasets </li></ul>BBC VIAF DBPedia Archives Hub Copac GeoNames
  7. 7. Enhancing our data <ul><li>Already have some links: </li></ul><ul><ul><li>Time - reference.data.gov.uk URIs </li></ul></ul><ul><ul><li>Location - UK Postcodes URIs and Ordnance Survey URIs </li></ul></ul><ul><ul><li>Names - Virtual International Authority File </li></ul></ul><ul><ul><ul><li>Matches and links widely-used authority files - http://viaf.org/ </li></ul></ul></ul><ul><ul><li>Names - DBPedia </li></ul></ul><ul><li>Also looking at: </li></ul><ul><ul><li>Subjects - Library Congress Subject Headings and DBPedia </li></ul></ul>
  8. 8. http://data.archiveshub.ac.uk/
  9. 9. http://data.archiveshub.ac.uk/id/person/nra/webbmarthabeatrice1858-1943socialreformer
  10. 11. How are we creating the Visualisation Prototype? <ul><li>Based on researcher use cases </li></ul><ul><li>Data queried from Sparql endpoint </li></ul><ul><li>Use tools such as Simile, Many Eyes, Google Charts </li></ul>
  11. 12. Visualisation Prototype <ul><li>Using Timemap – </li></ul><ul><ul><li>Googlemaps and Simile </li></ul></ul><ul><ul><li>http://code.google.com/p/timemap / </li></ul></ul><ul><li>Early stages with this </li></ul><ul><li>Will give location and ‘extent’ of archive. </li></ul><ul><li>Will link through to Archives Hub </li></ul>
  12. 13. Linking Lives Project <ul><li>Starts September 2011 </li></ul><ul><li>Builds on Locah work </li></ul>
  13. 14. The Key Benefit of Linked Data (?) <ul><li>Mashups work against a fixed set of data sources </li></ul><ul><ul><li>Hand crafted by humans </li></ul></ul><ul><ul><li>Don’t integrate well </li></ul></ul><ul><li>Linked Data promises an unbound global data space </li></ul><ul><ul><li>Easy dataset integration </li></ul></ul><ul><ul><li>Generic ‘mesh-up’ tools </li></ul></ul>
  14. 15. Matching Subjects
  15. 16. Matching Places
  16. 17. Sustainability <ul><li>Can you rely on data sources long-term? </li></ul><ul><li>Ed Summers at the Library of Congress created http://lcsh.info </li></ul><ul><li>Linked Data interface for LOC subject headings </li></ul><ul><li>People started using it </li></ul>
  17. 18. Scalability / Provenance Example by Bradley Allen, Elsevier at LOD LAM Summit, SF, USA <ul><li>Same issue with attribution </li></ul><ul><li>Solutions: Named graphs? Quads? </li></ul><ul><li>Best Practice </li></ul>
  18. 19. Data Modelling <ul><li>Complexity </li></ul><ul><ul><li>Archival description is hierarchical and multi-level </li></ul></ul><ul><li>Dirty Data </li></ul>Licensing <ul><li>‘ Ownership’ of data </li></ul><ul><li>Hard to track attribution </li></ul><ul><li>CC0 for Archives Hub and Copac data </li></ul>
  19. 20. Linked Data for Repositories? <ul><li>Repository data can ‘work harder’ </li></ul><ul><li>New channels into your data </li></ul><ul><li>New connections with other data sources </li></ul><ul><li>Researchers are more likely to discover sources </li></ul><ul><li>‘ Hidden' collections of repositories become of the Web </li></ul>

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