OCLC Linked Data Roundtable event IFLA 2012

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Presentation for the OCLC Linked Data Roundtable event for IFLA Helsinki 2012. Covers the reasoning behind the BL's linked open data version of the British National Bibliography, the processes needed …

Presentation for the OCLC Linked Data Roundtable event for IFLA Helsinki 2012. Covers the reasoning behind the BL's linked open data version of the British National Bibliography, the processes needed to create the service and challenges to be addressed.

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  • NoteCharacter set issues


  • 1. Making The Connection Linked Open Data at the British LibraryNeil WilsonHead, Metadata Servicesneil.wilson@bl.uk
  • 2. British Library Metadata Services The BL has a long history of supplying metadata to: Increase visibility of BL holdings & connect users to content Contribute to collaborative cataloguing initiatives Support free and priced bibliographic services 2
  • 3. Changing Environment The Web - fostered expectation information should be open to all Data has new value - from open technologies enabling rapid connection & reuse ‘Open + Data’ drives strategies for :  Transparency  Economic growth  Research & discovery
  • 4. Changing Environment Public Sector Open Data Rating★ Available on Web + open licence★★ + machine-readable★★★ + non-proprietary format★★★★ + W3C open standards★★★★★ + link to others data
  • 5. Linked Data Potential Benefits for Libraries Improved web integration of resources - increasing visibility & reaching new users A global pool of reusable data - for libraries to add unique value New library leadership opportunities - due to persistence, stability & authority 5
  • 6. Changing Environment Library DataUsers were once lonescholars but now include:  Collaborative Learners  Data miners  MachinesLibraries must respond to:  Stimulate innovation  Enable knowledge creation  Increase relevance & utility
  • 7. British Library Open Metadata Strategy Aims Migrate - from library formats to cross domain standards Collaborate - with community on new services advancing debate from theory to practice 7
  • 8. British Library Open Metadata Strategy Aims Remove barriers - enabling innovation without unnecessary restrictions Achieve recognition - while using licensing appropriate for widest re-use 8
  • 9. Open Service ObjectivesTarget services for: Traditional libraries (MARC21/Z39.50) Researchers - using new metadata processing techniques (RDF/XML) Linked data developers (RDF Triples/SPARQL) 9
  • 10. Linked Open Data PreliminariesTo concentrate effort on ourdata we identified:  The best licensing option for our objectives (CC0)  A proven hosting platform  External sources of expert comment 10
  • 11. Linked Open Data ObjectivesA staff & organisationaldevelopment opportunity using:  In-house staff  Existing tools & technologies  Library MARC21 data  Established linked data resources 11
  • 12. Linked Open Data Why BNB? General bibliography - not a unique institutional catalogue Consistent format - over 60 years Size & range of content - 3 million records on all subjects in many languages 12
  • 13. Linked Open Data Why BNB?Underlined commitmentby offering: Large, popular dataset - not niche sample Reusable metadata - not unique resource Foundational service & model - for others to build on 13
  • 14. Linked Open Data MARC Migration Started simply - improving with developing staff expertise Used expert training in:  Linked data concepts  RDF modelling  Presentation options Used the opportunity to re- evaluate & innovate - blending the best of old & new 14
  • 15. Linked Open Data Creating Links Techniques: Automatic generation from record data Auto text match with linked data dumps Crosswalk matching for coded data 15
  • 16. Linked Open Data Linked Site Selection To embed data in a wider context we linked: General resources:  GeoNames  Lexvo  RDF Book Mashup Plus library resources:  LCSH  VIAF  Dewey.info 16
  • 17. MARC21 to RDF XML Conversion Workflow • • Selection • Selection Selection • • Pre-processing • Pre-processing Pre-processing • • Character conversion • Character setset conversion Character set conversion • • URI generation • URI generation URI generation • Datatransformation Data transformation • Create & load triplesMARC to RDF conversionConsists of multiple automated steps 17
  • 18. Access Options • thedatahub.org/dataset/bluk-bnb-basic • thedatahub.org/dataset/bluk-bnb BNB Books 1950-2012 2.8 Million Records 85 Million Unique Triples .• bnb.data.bl.uk/sparql • bnb.data.bl.uk/describe • bnb.data.bl.uk/search 18
  • 19. Linked Open Data A Change in Perspective From self contained records for resources To linking triple statements about resources With ‘records’ assembled from statements 19
  • 20. Linked Open Data Achievements Presence & visibility New library data model - being utilised by wider groups New opportunities for collaboration - with public & private sector organisations Confirmation that valuable data will be used – e.g. up to 8 million monthly transactions 20
  • 21. Linked Open Data ChallengesHow to: Capture service value & gain attribution for effort Ensure expectations are Free met - both Government & wider Offering community License derived 3rd party data - to support open re-supply Ensure effective service maintenance - & persistence 21
  • 22. Library Linked Data Wish List? We Need More… Tools to link library data to other resources LMS integration of linked data options Navigation & visualisation applications Feedback on usage Collaboration on shared approaches 22
  • 23. Linked Open BNB http://www.bl.uk/bibliographic/datafree.htmlNext Steps: Regular updates More documentation & refinement of model Extend to cover further material & linked resources 23 Images from