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- 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
Notas del editor
- Talk about the Parliamentary Library: Established in 1851, building itself 1858–60