The Semantic Web: It's for Real


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Presented to a webinar hosted by Nuance Inc, under the title "The Semantic Web: What it is and Why you should care" on 2/29/2012.

This talk presents a fast overview of the Semantic Web and recent application deployment in the space.

Published in: Technology, Education

The Semantic Web: It's for Real

  1. 1. The Semantic Web: It’s for Real Jim Hendler Tetherless World Professor of Computer and Cognitive Science Assistant Dean of Information Technology and Web Science Rensselaer Polytechnic Institute @jahendler (twitter)
  2. 2. My Web page
  3. 3. My embedded metadata
  4. 4. My talk today From Research to Web
  5. 5. DAML Notional Schedule Now Later 2001: We will change the world!
  6. 6. On the Web -- links are critical! <a href= URI> HTML Web page Any Web Resource <a href= “http://…”> RDF URI URI URI RDF is like the web!
  7. 7. Links in the data <mind:Person rdf:id= “Hendler”> <mind:title jobs:Professor> <jobs:placeOfWork> </mind:Person> DOC1 Hendler DOC1 Mind:title Jobs:placeOfWork Web Page http://www… Professor Jobs: Mind: Jobs:
  8. 8. Asserting Links in the data <mind:Person rdf:id= “Hendler”> owl:sameAs <> DOC2 Hendler Mind:title Jobs:placeOfWork Web Page http://www… Jobs:Professor Dbpedia:Hendler Owl:sameAs Dbpedia:ComputerScientist Dbpedia:occupation
  9. 9. Linking Web Resources
  10. 10. Linked Data is entering many sectors 37 billion links
  11. 11. Linked Data + Semantics <ul><li>&quot;Linked Data&quot; approach finds its use cases in Web Applications (at Web scales) </li></ul><ul><ul><li>A lot of data, a little semantics </li></ul></ul><ul><ul><li>Finding anything in the mess can be a win! </li></ul></ul>
  12. 12. Semantic Web <ul><li>What is different now? </li></ul><ul><ul><li>Semantic Search </li></ul></ul><ul><ul><ul><li>Advertising drives Web market </li></ul></ul></ul><ul><ul><li>Some Visible successes </li></ul></ul><ul><ul><ul><li>Watson, Siri, Evi… </li></ul></ul></ul><ul><ul><li>“ Buzz” around data on the Web </li></ul></ul><ul><ul><ul><li>Esp open govt data </li></ul></ul></ul><ul><ul><li>Enterprise Technology Maturity </li></ul></ul><ul><ul><ul><li>Market demand pushing tech maturation </li></ul></ul></ul><ul><ul><ul><li>(BUT - business models still not mature) </li></ul></ul></ul>
  13. 13. Semantic Web <ul><li>What is driving the change? </li></ul><ul><ul><li>Maturation of RDF technologies </li></ul></ul><ul><ul><ul><li>SPARQL endpoints </li></ul></ul></ul><ul><ul><ul><li>Embedded markup </li></ul></ul></ul><ul><ul><ul><ul><li> & RDFa </li></ul></ul></ul></ul><ul><ul><ul><li>Lightweight Knowledge </li></ul></ul></ul><ul><ul><ul><ul><li>A little semantics goes a long way </li></ul></ul></ul></ul>
  14. 14. Maturation of the “bottom” of the Semantic Web <ul><li>What is seeing the most use?? </li></ul>RDFa
  15. 15. Facebook’s Open Graph Protocol April 2010 Today
  16. 16. Because they need the links! 2012: Extending the Social Graph
  17. 17. Creates a platform for SW-powered apps
  18. 18. (6/2011)
  19. 19. Video results show above regular results because of the embedded schemas - Google isn’t “guessing” on these
  20. 20. Rumors of bigger Google play coming soon July 2010 Feb 2012
  21. 21. Semantic Web in the Enterprise Aug 2010 cf. Oracle 2012
  22. 22. Enterprise Semantic Web DoD RFI – 12/2011
  23. 23. Watson and Semantic Web IBM
  24. 24. Watson and Semantic Web IBM
  25. 25. Agents coming Agent Technology is here
  26. 26. With more to come Agent Technology is here (and more to come…)
  27. 27. Semantic Search IEEE Computer, Jan 2010; IEEE Computing Now, Feb 2010 (free)
  28. 28. Semantic Search 2009-2010 Emerging search engines, new functionality
  29. 29. Semantic Search 2011-12 Integrated into search engines, continuing improvement
  30. 30. “ Web 3.0” Linked Data (RDF, SPARQL) Semantic Web (RDFS, owl) Web 3.0 Web 2.0 Web 3.0 extends current Web applications using Semantic Web, esp semantic and real-time search, technologies and graph-based, open data. Web (REST API)
  31. 31.
  32. 32. Unclear business model
  33. 33. Which may be a feature <ul><li>Significant and growing commercial interest… </li></ul><ul><ul><li>Web: Google, Amazon, Travelocity… </li></ul></ul><ul><ul><li>Web 2.0: Facebook, Wikipedia, YouTube, Twitter… </li></ul></ul><ul><ul><li>Web 3.0: ?? </li></ul></ul>
  34. 34. Summary <ul><li>The Semantic Web is real </li></ul><ul><ul><li>People asking “how,” not why </li></ul></ul><ul><li>So far the commercial driver has been “weak semantics” </li></ul><ul><ul><li>Very Simple “ontologies” </li></ul></ul><ul><ul><li>Lots of linking </li></ul></ul><ul><ul><li>Metadata agreements, not ontology alignments </li></ul></ul><ul><li>Web 3.0 adds semantics as a value add to regular Web functionality </li></ul><ul><ul><li>Data mashup </li></ul></ul><ul><ul><li>Semantic search </li></ul></ul><ul><ul><li>Semantic match </li></ul></ul><ul><li>Investor excitement: The big one is still out there </li></ul>
  35. 35. Your Questions Were <ul><li>Requested Session Focus </li></ul><ul><li>My internal contacts here at Nuance have requested a basic introduction on semantic web, with the discussion biased toward two use cases: </li></ul><ul><ul><li>Question answering by machine </li></ul></ul><ul><ul><ul><li>“ When does home depot close?” </li></ul></ul></ul><ul><ul><ul><li>“ Who has tylenol on sale?” </li></ul></ul></ul><ul><ul><ul><li>“ Where is the nearest shoe store that carries Rockport?” </li></ul></ul></ul><ul><ul><ul><li>(See Semantic Search) </li></ul></ul></ul><ul><ul><li>Automated agents </li></ul></ul><ul><ul><ul><li>“ Buy two tickets to the Patriots Jets game.” </li></ul></ul></ul><ul><ul><ul><li>“ Reorder Bond Street English Breakfast from Upton Tea.” </li></ul></ul></ul><ul><ul><ul><li>“ Find the lowest price on a Canon 70 to 200 f4 IS lens and email me the link.” </li></ul></ul></ul><ul><ul><ul><li>(Discuss Siri) </li></ul></ul></ul>