Linked Open Govt Data - Sem Tech East
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Linked Open Govt Data - Sem Tech East

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Keynote talk at 2011 Semantic Technology and Business conference - Washington DC, November 30, 2011. This updates my earlier slideshare talk on linked open govt data - new slides from slide 17 on.

Keynote talk at 2011 Semantic Technology and Business conference - Washington DC, November 30, 2011. This updates my earlier slideshare talk on linked open govt data - new slides from slide 17 on.

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  • 1. Linking Open Government Data http://logd.tw.rpi.edu Jim Hendler Tetherless World Professor of Computer and Cognitive Science Assistant Dean of Information Technology and Web Science Rensselaer Polytechnic Institute http://www.cs.rpi.edu/~hendler @jahendler (twitter)
  • 2. Government Data on the Web
  • 3. Government Data Sharing January 1, 2009 “ Openness will strengthen our democracy and promote efficiency and effectiveness in Government.” --- President Obama Putting Govt Data online- Data.gov.uk beta May 21, 2009 January 19, 2010 data.gov.uk online May 21, 2010 data.gov online data.gov relaunch with semantic web featured June30,2009 December 8, 2009 “ Open Government Directive ” released 2009 2010 … 57 Data Sets ~6000 Data Set ~2000 Data Sets >305,000 Data Sets
  • 4. Important to the citizens: eg. Education Data.gov.uk RPI NYS demos
  • 5. Moving data.gov to linked data (UK)
    • Built around “linked data” from the start
    • Authorization for this from the Prime Minister
  • 6. Moving data.gov to linked data (US)
    • Third parties (like RPI) translate the government datasets into linked data formats
    • • US Data.gov hosts 6.4B RDF triples 5/21/2010
      • Semantic Web community hosted
      • http://data.gov/semantic
  • 7.
    • Linked data lets us create “Data” Mashups
    More than 50 of these at http://logd.tw.rpi.edu (and lots more at data.gov.uk)
  • 8. Data.gov + epa.gov
  • 9.  
  • 10. Adding some Web magic Web Analytics Social Data Networks External Links
  • 11. Linking GDP of the US and China GDP of China (Billion Chinese Yuan ) GDP of the US (Billion Dollar) [Temporal Mashup] bea.gov + federalreserve.gov +stats.gov.cn
  • 12. Linking GDP of the US and China GDP of China (Billion Chinese Yuan ) GDP of the US (Billion Dollar) [Temporal Mashup] bea.gov + federalreserve.gov +stats.gov.cn This mashup was built in less than 4 hours – including conversion of data, web interface, and visualization!
  • 13. Govt systems can use linked data web for context Datasets: acres burned, and agency budgets Dbpedia: wikipedia descriptions of major US fires
  • 14. Integrate with Social media
  • 15. Combining data from different data sharing sites
  • 16. RPI workflow enhances raw RDF w/useful URIs derive derive create derive revision Convert Access Enhance Version SemDiff
  • 17. http://logd.tw.rpi.edu demos, tutorials, RDF-ized datasets, and more
  • 18.  
  • 19. Government Data in the linked open data cloud http://linkeddata.org/ Government Data is currently over ½ the cloud in size (~17B triples), 10s of thousands of links to other data (within and without)
  • 20. URI design
    • URI design is crucial to govt data sharing
      • esp. within govts
      • Whether your goal is linked data or not
    • UK Government has designed and made great use of standard URI practices in their linked data
      • US exploring URI design schemes
        • Join the community at Semantic.data.gov and participate!
  • 21. Instance Hub
  • 22. Example: US States
  • 23. Example: US Govt Agencies
  • 24. Etc.
  • 25. Metadata design
    • Metadata design is crucial to govt data sharing
      • Needed for search and federation in large data sharing efforts
    • International data sharing will be a crucial next step
      • W3C Govt Linked Data Working Group
      • Need for vocabularies within govt sectors
        • Esp for cross-langauge use
  • 26. International Open Government Data Search
  • 27. There’s lots of data out there!!
  • 28. Searching for data
    • Faceted browser with
      • Keyword search
      • Catalogs
      • Countries
      • Agencies
      • Categories
      • (in any order)
  • 29. Details and download… http://logd.tw.rpi.edu/demo/international_dataset_catalog_search
  • 30. Research remains to be done… (it ain’t all hackathons and contests)
    • Trust
      • Government data is controversial, and potentially biased
        • How do we confirm or dispute?
    • Combination
      • When we combine data we need to keep the provenance of information (see trust)
        • How can we show and use?
    • Scaling
      • Our project has already converted 9.9B triples from only >2,000 of the 440,000 government databases we can identify (116 catalogs, 38 countries, 16 languges)
    • Versioning and updating
    • Archiving
    • Visualization
  • 31. Exploring new visualizations Data from http://littlesis.org
  • 32. Summary
    • Open Govt data is a critical resource
      • Government data released as RDF (UK)
      • Government data converted to RDF (US)
      • Government data that can be found in many forms and used or converted (WWW)
    • Government transparency comes through in the “mashing up” of data from many datasets
      • Key to linked data
    • An amazing opportunity for technologists (public and private) to play in an important area of the public good
      • Innovation needed!
  • 33. Questions? http://logd.tw.rpi.edu