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LODLAM meeting Melbourne Museum

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Lightning talk given at the LOD-LAM (Linked Open Data in Libraries, Archives and Museums) workshop in Melbourne on April 18, 2012.

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LODLAM meeting Melbourne Museum

  1. 1. Department of Parliamentary Services Parliamentary LibrarySemantic Web Technologies at the Victorian Parliamentary LibraryPeter Neish, Systems OfficerVictorian Parliamentary Library@peterneish
  2. 2. Department of Parliamentary Services Parliamentary Library The Library• Established in 1851• Clients: – Members of Parliament and their staff – Department of Parliamentary Services (especially committees) – Academics and public• Historical information, Hansard, parliamentary papers, government agencies, member biographies• Provide current information to members e.g. news clips, video, journal articles, media releases
  3. 3. Department of Parliamentary Services Parliamentary Library Number of Media Releases per year7000600050004000300020001000 0 92 94 95 96 98 99 01 02 03 05 06 07 08 09 10 93 97 00 04 19 19 19 19 19 20 20 20 20 20 20 20 20 19 19 19 20 20 20
  4. 4. Department of Parliamentary Services Parliamentary Library Semantic Tagging• Increasing number of media • Web services examined: releases meant that manual – Alchemy API indexing was too time – Evri consuming – OpenAmplify• Examined ways of automatically – OpenCalais tagging media releases without human intervention – Yahoo Term Extractor – Zemanta
  5. 5. Department of Parliamentary Services Parliamentary Library Open Calais• Product of Thomson Reuters – focus is on news articles• Generous limits on API calls• Data in RDF/XML, N3, Simple Text, Microformats, JSON• Good documentation and community• http://viewer.opencalais.com/However: closed box (algorithm secret), recently company appear to have scaled back development
  6. 6. Department of Parliamentary Services Parliamentary LibraryNumber of Tags assigned by OpenCalais 4500 4000 3500 3000 Total number 2500 2000 1500 1000 500 0 0 20 40 60 80 100 120 Tags per item
  7. 7. Department of Parliamentary ServicesParliamentary Library 6% 5% Tag Quality 4% Correct Tags Incorrect Tags Repeated Tags Redundant Tags 85%
  8. 8. Department of Parliamentary Services Parliamentary Library Open Calais RDF• OpenCalais links to its own ontology (rich in data for companies, but other classes have limited data)• RDF has a lot of N-ary relationships (up to 1000 triple statements per article)• SameAs or web links to: – DBpedia, Wikipedia, Freebase, Reuters.com, GeoNames, Shopping.com, IMDB, LinkedMDB
  9. 9. Department of Parliamentary ServicesParliamentary Library User interface
  10. 10. Department of Parliamentary Services Parliamentary Library Current Projects using Linked Data• Government Agencies Database• Parliamentary Papers• Images

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