Tetherless World Constellation
The Semantic Web:It’s for Real
Jim HendlerTetherless World Professor of Computer and Cognitive Science
Assistant Dean of Information Technology and Web ScienceRensselaer Polytechnic Institute
http://www.cs.rpi.edu/~hendler@jahendler (twitter)
Tetherless World Constellation
My Web page
http://www.cs.rpi.edu/~hendler
Tetherless World Constellation
My embedded metadata
Tetherless World Constellation
My talk today
From Researchto Web
Tetherless World Constellation
DAML
Notional Schedule
Now
Later
2001: We will change the world!
Tetherless World Constellation
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!
Tetherless World Constellation
<mind:Person rdf:id=“Hendler”> <mind:title jobs:Professor> <jobs:placeOfWork http://www.cs.rpi.edu></mind:Person>
DOC1
HendlerDOC1 Mind:title
Jobs:placeOfWork Web Pagehttp://www…
ProfessorJobs:Mind:
Jobs:
Links in the data
Tetherless World Constellation
<mind:Person rdf:id=“Hendler”> owl:sameAs<http://dbpedia.org/page/James_Hendler>
DOC2
Hendler
Mind:title
Jobs:placeOfWork Web Pagehttp://www…
Jobs:Professor
Asserting Links in the data
Dbpedia:Hendler
Owl:sameAs
Dbpedia:ComputerScientist
Dbpedia:occupation
Tetherless World Constellation
Linking Web Resources
Sindice.com
Tetherless World Constellation
Linked Data is entering many sectors
Linkeddata.org 37 billion links
Tetherless World Constellation
Linked Data + Semantics
• "Linked Data" approach finds its use cases in Web Applications (at Web scales)– A lot of data, a
little semantics– Finding anything
in the mess can be a win!
http://www.cs.rpi.edu/~hendler/LittleSemanticsWeb.html
Tetherless World Constellation
Semantic Web
• What is different now?– Semantic Search
• Advertising drives Web market
– Some Visible successes• Watson, Siri, Evi…
– “Buzz” around data on the Web• Esp open govt data
– Enterprise Technology Maturity• Market demand pushing tech maturation• (BUT - business models still not mature)
Tetherless World Constellation
Semantic Web
•What is driving the change?–Maturation of RDF technologies
•SPARQL endpoints•Embedded markup
–Schema.org & RDFa
•Lightweight Knowledge–A little semantics goes a long way
Tetherless World Constellation
Maturation of the “bottom” of the Semantic Web
• What isseeing the mostuse??
RDFa
Tetherless World Constellation
Facebook’s Open Graph Protocol
April 2010Today
Tetherless World Constellation
Because they need the links!
2012: Extending the Social Graph
Tetherless World Constellation
Creates a platform for SW-powered apps
Tetherless World Constellation
Schema.org (6/2011)
Tetherless World Constellation
Schema.org
Video results show above regular results because of the embedded schemas - Google isn’t “guessing” on these
Tetherless World Constellation
Rumors of bigger Google play coming soon
July 2010 Feb 2012
Tetherless World Constellation
Semantic Web in the Enterprise
Aug 2010cf. Oracle 2012
Tetherless World Constellation
Enterprise Semantic Web
DoD RFI – 12/2011
Tetherless World Constellation
Watson and Semantic Web
IBM
Tetherless World Constellation
Watson and Semantic Web
IBM
Tetherless World Constellation
Agents coming
Agent Technology is here
Tetherless World Constellation
With more to come
Agent Technology is here(and more to come…)
Tetherless World Constellation
Semantic Search
IEEE Computer, Jan 2010; IEEE Computing Now, Feb 2010 (free)
Tetherless World Constellation
Semantic Search 2009-2010
Emerging search engines, new functionality
Tetherless World Constellation
Semantic Search 2011-12
Integrated into search engines, continuing improvement
Tetherless World Constellation
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 3.0”
Web (REST API)
Tetherless World Constellation
Example:Trialx.com
Tetherless World Constellation
Unclear business model
Tetherless World Constellation
Which may be a feature
• Significant and growing commercial interest…– Web: Google, Amazon, Travelocity…– Web 2.0: Facebook, Wikipedia,
YouTube, Twitter…– Web 3.0: ??
Tetherless World Constellation
Summary
• The Semantic Web is real– People asking “how,” not why
• So far the commercial driver has been “weak semantics”– Very Simple “ontologies” – Lots of linking– Metadata agreements, not ontology alignments
• Web 3.0 adds semantics as a value add to regular Web functionality– Data mashup– Semantic search– Semantic match
• Investor excitement: The big one is still out there
Tetherless World Constellation
Your Questions Were
• Requested Session Focus• My internal contacts here at Nuance have requested a basic
introduction on semantic web, with the discussion biased toward two use cases:– Question answering by machine
• “When does home depot close?”• “Who has tylenol on sale?”• “Where is the nearest shoe store that carries Rockport?”(See Semantic Search)
– Automated agents• “Buy two tickets to the Patriots Jets game.”• “Reorder Bond Street English Breakfast from Upton Tea.”• “Find the lowest price on a Canon 70 to 200 f4 IS lens and email me the
link.”(Discuss Siri)