1. Tetherless World Constellation Open Government Data 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. Tetherless World Constellation Government Data on the Web

3. Tetherless World Constellation 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 ~3000 Data Sets ~2000 Data Sets ~270000 Data Sets*

4. Tetherless World Constellation What’s promising Linked open government data (data.gov, data.gov.uk) –Of many kinds Markup languages and semantics and tools to enable transparency Lower barriers to internet visualization, e.g. Google vis, MIT simile, many more… Web 2.0 to put people in the loop and use and contribute to annotations

5. Tetherless World Constellation Moving data.gov to linked data (UK) Built around linked data with top- down push from “Number 10”

6. Tetherless World Constellation Moving data.gov to linked data (US) Third parties (like RPI) translated the govt data into Sem Web forms and linked to sources RPI contribution acknowledged at Data.gov 5/21/10 - http://data-gov.tw.rpi.edu

7. Tetherless World Constellation http://data.gov

8. Tetherless World Constellation Data.gov community: International

9. Tetherless World Constellation Pump through to Google Viz and other APIS

10. Tetherless World Constellation Data.gov + epa.gov

11. Tetherless World Constellation

12. Adding some Web magic Web Analytics Social Data Networks External Links

13. Tetherless World Constellation Many examples on our wiki http://data-gov.tw.rpi.edu/wiki/Demos

14. Tetherless World Constellation NTIA internet funding vs. tweets about #haiti

15. Tetherless World Constellation Govt systems can use for context Correlates fires, acres burned, and agency budgets

16. Tetherless World Constellation Linked Open Data goes beyond govt http://linkeddata.org/

17. Tetherless World Constellation Combining data from different sites

18. Tetherless World Constellation Even if not “rationalized” together

19. Tetherless World Constellation And many other interesting issues 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 –Data-gov Wiki has already converted 5,448,693,510 triples Versioning and updating Archiving Searching …

20. Tetherless World Constellation Summary The 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 sites –Key to linked data But many challenges remain –Scaling, Trust, Provenance, Archiving, Curation, …