What is the Semantic Web?

steelsquareInternet and Web Development

Oct 20, 2013 (3 years and 10 months ago)

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July, 04

What is the Semantic Web?

(A
mostly

pictorial tour)

Prof. James Hendler

Hendler@cs.umd.edu



http://www.cs.umd.edu/~hendler

http://www.mindswap.org

Presentations, Downloads and Demos:



July, 04

Information Convergence


Convergence not just in devices, also in “information”


Your personal information (phone, PDA,…)



Calendar, photo, home page, files…


Your “professional” life (laptop, desktop, … Grid)


Web site, publications, files, databases, …


Your “community” contexts (Web)


Hobbies, blogs, fanfic, social networks…


The Web teaches us that people will work to share


How do we CREATE, SEARCH, and BROWSE in
the non
-
text based parts of our lives?




July, 04

Getting there: Make Web content more “machine
-
readable!”

Lassila
et al
, 2002



July, 04

The Semantic Wave

(Berners
-
Lee, 03)

YOU

ARE

HERE



July, 04

Now.


RDF, RDFS and OWL are ready for prime time


Designs are stable, implementations maturing


Major Research investment translating into
application development and commercial spinoffs


Adobe 6.0 embraces RDF


IBM releases tools, data and partnering


HP extending Jena to OWL


Tucana announces results for 1B triple queries


Proprietary OWL ontologies for vertical markets


c.f. pharmacology, HMO/health care, ... Soft drinks


Several new starts in SW space



July, 04

Now: huge potential


Data integration identified as $100Bs world
-
wide
market


with significant govt interest creating a user
-
pull


Ontology development efforts, in OWL, aimed at
information mgt ongoing in US govt include


NIST, NLM, EPA, DHS, DoD, DOJ, FDA, NIH, USGS,
NOAA


Huge potential follow
-
on market
-

EAI for the
small business


making external data and info resources integrable


Could do for integration what Visicalc (excel) did for report
generation



July, 04

Now: Tools for tool builders


Like the pre
-
MOSAIC WWW…


…but, it is much easier to get started than it was
even a year ago,


Parsers, APIs, triple
-
stores


http://www.daml.org/tools


http://www.w3.org/RDF


End to end no longer takes a “miracle”


Prototype OWL website took three undergraduates about 1
month.


End user tools just starting to emerge


“Metaphors” growing



July, 04

Tools for markup...

PhotoStuff Demo



July, 04

Not tied to specific domains

Photo from Grecia



July, 04

Not tied to specific domains

Photo from Grecia



July, 04

Semantic Web Application Portals



July, 04

Info views…



July, 04

Not tied to specific domains



July, 04

Not tied to specific domains



July, 04

Not tied to specific domains



July, 04

With Info Contexts



July, 04

Shared calendars



July, 04

Calendar + photos + …



July, 04

Social networks:

e.g.
Friend of a Friend (FOAF)


Say stuff about yourself (or others) in OWL
files, link to who you “know”



<foaf:Person>


<foaf:name>Jim Hendler</foaf:name>


<foaf:title>Dr</foaf:title>


<foaf:firstName>Jim</foaf:firstName>


<foaf:surname>Hendler</foaf:surname>


<foaf:mbox_sha1sum>



be972c7a602683f7cf3c7a1fd0949c565debe4d3


</foaf:mbox_sha1sum>


<foaf:homepage rdf:resource="http://www.cs.umd.edu/~hendler"/>


<foaf:depiction rdf:resource="http://www.semanticgrid.org/q
-
iantbljim.jpg"/>


<foaf:workplaceHomepage rdf:resource="http://owl.mindswap.org"/>


<foaf:knows>http://www.cs.umd.edu/~jen/foaf.rdf</foaf:knows>


</foaf:Person>

Estimates of the number of Foaf users range from 2M
-
5M



July, 04

Using
FOAF

in other contexts

http://trust.mindswap.org

Jennifer

Golbeck



July, 04

Coming sooner than you may
think…



July, 04

… and this…



July, 04

…and this?



July, 04

Emerging:

Semantic Web Services

Information management capabilities


Discovery, Filtering, Composition




July, 04

Semantics and services

input xsd:complex=”oncogene”

output xsd:complex=”RiskType”

Oncogene(MYC):


Found_In_Organism(Human).


Gene_Has_Function(Transcriptional_Regulation).


Gene_Has_Function(Gene_Transcription).


In_Chromosomal_Location(8q24).


Gene_Associated_With_Disease(Burkitts_Lymphoma).


<owl:Class rdf:about="http://annotation.semanticweb.org/iswc/iswc.daml#RiskIndicator">


<rdfs:subClassOf>


<owl:Restriction>


<owl:onProperty rdf:resource="http://annotation.semanticweb.org/iswc/iswc.daml#name"/>


<owl:allValuesFrom rdf:resource="http://www.w3.org/2000/10/XMLSchema#string"/>


</owl:Restriction>


</rdfs:subClassOf>


</:Class>

OWL
-
S grounding (coming to WSDL 2.0)



July, 04

Get a B&N price (In Euros)



July, 04

Of a particular book



July, 04

In its German edition?



July, 04



July, 04

Later: Automated composition



July, 04

Longer term?: Adding Proof



July, 04

The “Policy Aware Web”



July, 04

Conclusion


The Semantic Web is here


The question isn’t if, but “how much”


Semantic Web technologies have a promising future and an
exciting potential


The business case is emerging


Enterprise integration on the Web


Database, image, and services as 1st class Web citizens


Portal technology “in the small”


The future feed is exciting


Rules and Proof
-
> “Policy Aware” Web



July, 04

MIND SWAP


Maryland Information and Network Dynamics Laboratory,



Semantic Web and Agents Project


J. Hendler


B. Parsia


Jennifer Golbeck


Aditya Kalyanpur


David Wang


Daniel Krech


Evren Sirin


Corporate Research Partners:


Fujitsu Laboratory of America, College Park


Lockheed Martin Advanced Technology Laboratories


NTT Corp


SAIC Corp., Kevric Corp, Top Quadrant, Tucana, Semaview


Govt Funding:


US Army Research Laboratory, NSF, DARPA, DoD, NIST,


http://www.mindswap.org

(
OWL
-
powered Semantic Web page
)

• Ronald Alford

• Jordan Katz

• Amy Alford

• Matt Westhoff

• Kendall Clark

• Nada Hashmi