the semantic web: it's for real
DESCRIPTION
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.TRANSCRIPT
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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)
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Tetherless World Constellation
My Web page
http://www.cs.rpi.edu/~hendler
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Tetherless World Constellation
My embedded metadata
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Tetherless World Constellation
My talk today
From Researchto Web
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Tetherless World Constellation
DAML
Notional Schedule
Now
Later
2001: We will change the world!
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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!
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<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
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<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
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Tetherless World Constellation
Linking Web Resources
Sindice.com
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Tetherless World Constellation
Linked Data is entering many sectors
Linkeddata.org 37 billion links
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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
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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)
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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
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Maturation of the “bottom” of the Semantic Web
• What isseeing the mostuse??
RDFa
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Tetherless World Constellation
Facebook’s Open Graph Protocol
April 2010Today
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Because they need the links!
2012: Extending the Social Graph
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Tetherless World Constellation
Creates a platform for SW-powered apps
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Tetherless World Constellation
Schema.org (6/2011)
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Tetherless World Constellation
Schema.org
Video results show above regular results because of the embedded schemas - Google isn’t “guessing” on these
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Rumors of bigger Google play coming soon
July 2010 Feb 2012
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Tetherless World Constellation
Semantic Web in the Enterprise
Aug 2010cf. Oracle 2012
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Enterprise Semantic Web
DoD RFI – 12/2011
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Tetherless World Constellation
Watson and Semantic Web
IBM
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Tetherless World Constellation
Watson and Semantic Web
IBM
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Tetherless World Constellation
Agents coming
Agent Technology is here
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Tetherless World Constellation
With more to come
Agent Technology is here(and more to come…)
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Tetherless World Constellation
Semantic Search
IEEE Computer, Jan 2010; IEEE Computing Now, Feb 2010 (free)
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Tetherless World Constellation
Semantic Search 2009-2010
Emerging search engines, new functionality
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Tetherless World Constellation
Semantic Search 2011-12
Integrated into search engines, continuing improvement
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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)
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Example:Trialx.com
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Unclear business model
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Which may be a feature
• Significant and growing commercial interest…– Web: Google, Amazon, Travelocity…– Web 2.0: Facebook, Wikipedia,
YouTube, Twitter…– Web 3.0: ??
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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
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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)