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Linked Open Data

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Presentation at 2nd Open Data Ireland Meetup, Dublin, Ireland
https://groups.google.com/forum/?fromgroups=#!forum/open-data-ireland

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Linked Open Data

  1. 1. Digital Enterprise Research Institute www.deri.ie Linked Open Data Deirdre Lee Digital Enterprise Research Institute (DERI), NUI Galway 22nd November 2012© Copyright 2011 Digital Enterprise Research Institute. All rights reserved. Enabling Networked Knowledge
  2. 2. DERI, NUI GalwayDigital Enterprise Research Institute www.deri.ie  Centre for Science, Engineering and Technology (CSET) established in 2003 with funding from the Science Foundation Ireland (SFI)  ~130 researchers  Research Areas: Semantic Web, Web Science, Social Networks, Data Mining, Information Systems  Application Areas: eGovernment, Bioinformatics, Security, eBusiness and financial services, eHealth, and Green & Sustainable IT. Enabling Networked Knowledge
  3. 3. DERI, NUI GalwayDigital Enterprise Research Institute www.deri.ie  National funding from SFI, EI, IRCSET and industrial collaborations  EC Funding: FP6, FP7, etc.  DERI technology driving 100,000s of Websites (i.e. in Drupal)  DERI technology installed on countless desktops (i.e. in Linux)  ~100 industry and public partners  Avaya, Alcatel-Lucent, Celtrak, Cisco, Ericsson, FBK, OpenLink, Storm Technology, etc.  > 1,000 peer-reviewed papers  Actively participate in 17 standardisation activities (W3C, OASIS) Enabling Networked Knowledge
  4. 4. Digital Enterprise Research Institute www.deri.ie  What is Linked Open Data? Open Data?  Linked Data Standards & Tools  Linked Open Data in Practice Enabling Networked Knowledge
  5. 5. Digital Enterprise Research Institute www.deri.ie Public OP N E Data  Difficult to find Data  Difficult to reuse  Difficult to integrate Enabling Networked Knowledge
  6. 6. What is Linked Open Data?Digital Enterprise Research Institute www.deri.ie ? Enabling Networked Knowledge
  7. 7. What is Linked Open Data?Digital Enterprise Research Institute www.deri.ie hasRugbyTeam hasCapital IRELAND hasGovernment hasMusicGroup hasUniversity hasUnemployment Enabling Networked Knowledge
  8. 8. What is Linked Open Data?Digital Enterprise Research Institute www.deri.ie Facilitating data integration through:  Common data model  Building relations Enabling Networked Knowledge
  9. 9. Two Key IngredientsDigital Enterprise Research Institute www.deri.ie 1. RDF – Resource Description Framework (Graph based Data)  Identifies objects (URIs)  Interlink information (Relationships) 1. Vocabularies (Ontologies)  Provide shared understanding of a domain  Organise knowledge in a machine-comprehensible way  Give an exploitable meaning to the data Enabling Networked Knowledge 9 of 46
  10. 10. LOD CloudDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge http://lod-cloud.net
  11. 11. TimBL’s 5 Open DataDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  12. 12. ★ On the Web, Open LicenseDigital Enterprise Research Institute www.deri.ie  On the Web  Wide access  Google can index it  People can find it themselves  Open License  Regulates reuse of data  Helps maintain provenance  Strengthens business reuse – http://opendefinition.org/licenses/ Enabling Networked Knowledge
  13. 13. ★ ★ Structured DataDigital Enterprise Research Institute www.deri.ie  Machine-readable Enabling Networked Knowledge
  14. 14. ScreenscrapingDigital Enterprise Research Institute www.deri.ie  People use tools like ScraperWiki to get at data that isnt machine- readable  https://scraperwiki.com/tags/ireland  Scraping is problematic because:  It is expensive  It is brittle  It puts a strain on computing resources Enabling Networked Knowledge
  15. 15. FormatsDigital Enterprise Research Institute www.deri.ie  Good:  MS Excel, CSV, XML, JSON, Microdata  Not so good:  Pure websites, MS Word  Bad:  PDF  Really bad:  Only charts/maps without numbers, images Enabling Networked Knowledge
  16. 16. ★ ★ ★ Non-Proprietary FormatsDigital Enterprise Research Institute www.deri.ie Freedom of how to process, analyse and visualise data  Proprietary:  Word, Excel, PDF  Non-proprietary:  CSV, XML, JSON, Microdata, RDF Enabling Networked Knowledge
  17. 17. ★ ★ ★ ★ Use URIsDigital Enterprise Research Institute www.deri.ie Unique identifiers enable others to point to the data.  <http://www.deri.ie/about/team/member/Deirdre_Lee>  <http://www.deri.ie/publications#uid_339 > Enabling Networked Knowledge
  18. 18. ★ ★ ★ ★ ★ Linking DataDigital Enterprise Research Institute www.deri.ie Link your data to other data to provide context http://lod-cloud.net Enabling Networked Knowledge
  19. 19. Digital Enterprise Research Institute www.deri.ie  What is Linked Data  Linked Data Standards & Tools  Linked Open Data in Practice Enabling Networked Knowledge
  20. 20. Linked Data StandardsDigital Enterprise Research Institute www.deri.ie Government Linked Data (GLD) WG www.w3.org/2011/gld/ Enabling Networked Knowledge
  21. 21. Linked Open MetadataDigital Enterprise Research Institute www.deri.ie Data Catalog Vocabulary (DCAT) http://www.w3.org/TR/vocab-dca Enabling Networked Knowledge
  22. 22. Integrating Linked Metadata RepositoriesDigital Enterprise Research Institute www.deri.ie Shukair, G., et al., Integrating Linked Metadata Repositories in the Web of Data, in Third International Workshop on Consuming Linked Data (COLD 2012)at ISWC 2012: Boston, US. Enabling Networked Knowledge
  23. 23. Domain-Specific VocabulariesDigital Enterprise Research Institute www.deri.ie  JOINUP European Commission ISA Semantic Assets  Core Person Vocabulary  Core Location Vocabulary  Core Business Vocabulary  Core Public Service Vocabulary – http://joinup.ec.europa.eu/  Data Cube Vocabulary  http://www.w3.org/2011/gld/wiki/Data_Cube_Vocabulary  Vocab Lists  http://vocab.deri.ie/  http://vocab.data.gov/ Enabling Networked Knowledge
  24. 24. Linked Data ToolsDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  25. 25. Digital Enterprise Research Institute www.deri.ie  What is Linked Data  Linked Data Standards & Tools  Linked Open Data in Practice Enabling Networked Knowledge
  26. 26. Lets Do It Galway 2012Digital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  27. 27. Galway Open Data PortalDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  28. 28. Galway Compass -PiersDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  29. 29. County RankDigital Enterprise Research Institute www.deri.ie http://county-rank.data-gov.ie/ Enabling Networked Knowledge
  30. 30. Fingal Fact FinderDigital Enterprise Research Institute www.deri.ie http://vmsgov03.deri.ie:8080/data-cube-searcher/about.html Enabling Networked Knowledge
  31. 31. World Bank Linked DataDigital Enterprise Research Institute www.deri.ie  World Bank Indicators http://worldbank.270a.info  World Bank Finances  World Bank Projects and Operations  World Bank Climate Change Sarven Capadisli Enabling Networked Knowledge
  32. 32. Europeana LOD PilotDigital Enterprise Research Institute www.deri.ie http://data.europeana.eu http://srvgal85.deri.ie/ab-app/  Fully open metadata  2.4 M objects  200 individual providers  15 countries Enabling Networked Knowledge
  33. 33. Linked Sensor Middleware (LSM)Digital Enterprise Research Institute www.deri.ie Live data http://lsm.deri.ie Enabling Networked Knowledge
  34. 34. Over 110,000 Live Data SourcesDigital Enterprise Research Institute www.deri.ie …and growing!!! Enabling Networked Knowledge
  35. 35. Digital Enterprise Research Institute www.deri.ie 3 Railway Station a Flight information update CallSign: EIN432. Latitude: 47.17525. Longitude: 8.61251. Altitude: 34000.0 (feet). Speed: 392 (kts). Departure: ARN. Destination: LHR 1 RDF data b 2 Traffic camera 4 Enabling Networked Knowledge
  36. 36. Super Stream ColliderDigital Enterprise Research Institute www.deri.ieLSM Sensors SPARQL Endpoint http://superstreamcollider.org Enabling Networked Knowledge 36
  37. 37. Linked Data in Systems BiologyDigital Enterprise Research Institute www.deri.ie ~20 000 genes ~100 interesting High-throughput technologies genes/proteins ~ 10 interesting Computational statistics pathways Browse databases ~5 proteins testable in the lab Literature Linked Data Hypothesis Generation “I like to call it low-input, high- throughput, no-output biology.” Enabling Networked Knowledge
  38. 38. Data.gov.uk Linked Open DataDigital Enterprise Research Institute www.deri.ie Enabling Networked Knowledge
  39. 39. Data.gov Linked Open DataDigital Enterprise Research Institute www.deri.ie  Clinical Quality Linked Data on Health.data.gov  EPA s Facility Registry and Substance Registry  Enabling Networked Knowledge
  40. 40. Norwegian National Master Data as LODDigital Enterprise Research Institute www.deri.ie Norwegian master data: Business Property Citizen (Legal Entities) (inc. map data)  The Central Coordinating Register for Legal Entities (RLE)  ~1 million companies, 40 attributes  Norwegian Semantic Repository of Electronic Services (SERES)  Metadata repository  Register of Company Accounts Myrseth, P., et al., National Master Data as 5 Star Linked Open Data, in Electronic Government (eGov2012). 2012, Trauner-Verlag: Kristiansand, Norway. Enabling Networked Knowledge
  41. 41. Fire Department Amsterdam-AmstellandDigital Enterprise Research Institute www.deri.ie Bart van Leeuwen – Fire fighter & netage.nl  Problem: http://blog.resc.info/  Masses of data  Navigation system didn’t work  Operational risks due to communication failure  Need for:  Structured incident information  Used by >15 Fire Stations in the greater Amsterdam area  All Linked Data published on Web Enabling Networked Knowledge
  42. 42. New York TimesDigital Enterprise Research Institute www.deri.ie http://data.nytimes.com/ Enabling Networked Knowledge
  43. 43. How the BBC makes WebsitesDigital Enterprise Research Institute www.deri.ie  Develop a domain model  Populate your data model  Design URIs  Build pages  Apply layout and decor CSS  Test and iterate Mike Atherton, ‘Beyond the Polar Bear’ http://www.slideshare.net/reduxd/beyond-the-polar-bear Enabling Networked Knowledge
  44. 44. Proof PointsDigital Enterprise Research Institute www.deri.ie  Massive Industry Adoption Enabling Networked Knowledge
  45. 45. Open Data Publishing PipelineDigital Enterprise Research Institute (ODPP) www.deri.ie  Difficulty with Publishing Open Data:  Remains quite a manual process  Modular Data Management System for publishing standard Open Data, based on Open Source components. http://publishing-pipeline.com/ Enabling Networked Knowledge
  46. 46. Open Data Publishing PipelineDigital Enterprise Research Institute (ODPP) www.deri.ie Enabling Networked Knowledge
  47. 47. European Data Forum 2013Digital Enterprise Research Institute www.deri.ie April 9th/10th, Dublin Enabling Networked Knowledge

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