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LODLAM meeting Melbourne Museum

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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Department of Parliamentary Services
      Parliamentary Library




Semantic Web Technologies at the
 Victorian Parliamentary Library




Peter Neish, Systems Officer
Victorian Parliamentary Library
@peterneish
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
Department of Parliamentary Services
       Parliamentary Library


              Number of Media Releases per year
7000


6000


5000


4000


3000


2000


1000


   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
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
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
Department of Parliamentary Services
      Parliamentary Library


Number 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

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LODLAM meeting Melbourne Museum

  • 1. Department of Parliamentary Services Parliamentary Library Semantic Web Technologies at the Victorian Parliamentary Library Peter Neish, Systems Officer Victorian Parliamentary Library @peterneish
  • 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. Department of Parliamentary Services Parliamentary Library Number of Media Releases per year 7000 6000 5000 4000 3000 2000 1000 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. 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. 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. Department of Parliamentary Services Parliamentary Library Number 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. Department of Parliamentary Services Parliamentary Library 6% 5% Tag Quality 4% Correct Tags Incorrect Tags Repeated Tags Redundant Tags 85%
  • 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. Department of Parliamentary Services Parliamentary Library User interface
  • 10. Department of Parliamentary Services Parliamentary Library Current Projects using Linked Data • Government Agencies Database • Parliamentary Papers • Images

Editor's Notes

  1. Talk about the Parliamentary Library: Established in 1851, building itself 1858–60