The good – emphasize the importance of the foundational layers (URIs and RDF) ; emphasizes the long-term roadmap/vision of what’s needed for the Semantic WebThe bad – implies that perhaps things can’t be taken serious until all the pieces are in place ; implies an order to the research ; various versions of the cake tell different stories (importance of XML, absence of query, lack of UI/application layer, …)Valentin Zacharias wrote about the “infamy” part of the layer cake here: http://www.valentinzacharias.de/blog/2007/04/ban-semantic-web-layer-cake.html
An Introduction to the Semantic
VP Technology & Client Services, Cambridge Semantics
Co-chair, W3C SPARQL Working Group
Executive Summary: Semantic Web in
Semantic Web technologies in 2010 is characterized by a healthy
environment of stable, broadly-implemented core standard
technologies complemented by a number of continually emerging
Adopters of Semantic Web technologies can choose from a wide
range of commercial and open-source interoperable tools and
Enterprise Semantic Web projects are moving beyond proofs of
concept and production pilots to larger-scale production
Community and government projects on the World Wide Web,
buoyed by increasing support from major search engines, have
linked hundreds of public data sets into an emergent Semantic
“The Semantic Web”
Put explicit data on the World Wide Web in a
In order to enable…
What is it & why do we care? (1)
World Wide Web : Web pages :: The Semantic Web : Data
“Semantic Web technologies”
A family of technology standards that ‘play nice
Flexible data model
Expressive ontology language
Distributed query language
Drive Web sites, enterprise applications
What is it & why do we care? (2)
The technologies enable us to build applications and solutions that
were not possible, practical, or feasible traditionally.
Two (different but related) takes on the same
The Semantic Web is often implemented using
Semantic Web technologies
You’ll hear about both here
Heads or Tails?
Web of Data
Giant Global Graph
Linked Data Web
Semantic Data Web
A common set of technologies:
...enables diverse uses
A coherent set of technologies:
…encourage incremental application
…provide a substantial base for innovation
A standard set of technologies:
...reduces proprietary vendor lock-in
...encourages many choices for tool sets
A Common & Coherent Set of Technology
“Semantic technologies” generally refers to a
broad spectrum of techniques for finding
signal in large or complex data sources.
Semantic Web standards tend to be effective
tools for implementing these techniques.
Semantic (Web) Technologies?
Semantic Web standards
• RDF – data model
• RDFS & OWL – schema, ontology, inference
• SPARQL – query
• RDFa – data in Web pages
• Data mining
• Unstructured text mining / NLP
• Entity extraction
• Sentiment analysis
• Semantic search
The World Changes
Change is costly
Change is cheap
The (Dynamic) Semantic Web Paradigm
RDB 1 RDB 2
As technologies & tools have evolved, Semantic Web
community members have progressed through stages:
2010: Where we are
Report on… Execute on…
Semantic Web vision Initial experiments
Experiments Technology standards
Technology standards Software packages
Software packages Proofs of concept
Proofs of concept Production pilots
Production pilots Production implementations
2010: Where we’re not
Semantic Web technologies are not a ‘magic crank’ for discovering
new drugs (or solving other problems, for that matter)!
Image from Trey Ideker via Enoch Huang
How do the solutions and approaches
presented benefit from flexibility?
Can the solutions presented
be easily adapted to other
Flexibility & Reuse
How does Semantic Web technologies bring
differential value to the projects presented?
Faster development speed?
Incremental development / deployment?
Inferring new data?
Improved user / consumer / partner experience?
Something else altogether?
What skills are required to build and maintain
the solutions you see?
What factors are helping or hindering adoption
of the projects presented?
What does the presented work tell us about
the maturity of the Semantic Web standards,
tools, market, …?