itws capstone lecture (spring 2013)
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ITWS Capstone Lecture:ITWS Capstone Lecture:
The Semantic WebThe Semantic Web
John S. Erickson, Ph.D.John S. Erickson, Ph.D.Director, Web Science OperationsDirector, Web Science Operations
Tetherless World ConstellationTetherless World ConstellationRPIRPI
...the purpose of the lecture is to summarize the Semantic Web
with key concepts and the introduction of a few advanced ideas
that will be useful to these graduating seniors in grad school
or their careers...
...the purpose of the lecture is to summarize the Semantic Web
with key concepts and the introduction of a few advanced ideas
that will be useful to these graduating seniors in grad school
or their careers...
1989...1989...
““Vague but exciting...”Vague but exciting...”““Vague but exciting...”Vague but exciting...”
21212121
Percent of total catalogsPercent of total catalogs(from 192 catalogs)(from 192 catalogs)
Int'l Open Gov't Dataset Search:Int'l Open Gov't Dataset Search:searching searching 1,022,7871,022,787 datasets datasets
from from 192192 catalogs catalogsin in 2424 languages languages
representing representing 4343 countries countries and international organizationsand international organizations
(Summer 2012)(Summer 2012)
““Web of meaning”Web of meaning”
Web of DataWeb of Data
Make meaningfulMake meaningfulassertionsassertions
about thingsabout thingson the Web...on the Web...
Make meaningfulMake meaningfulassertionsassertions
about thingsabout thingson the Web...on the Web...
Semantic Web?Semantic Web?
““Web of meaning”Web of meaning”
Web of DataWeb of Data
Linked DataLinked Data
Link ideas...Link ideas...Link ideas...Link ideas...
Semantic Web?Semantic Web?
subjectsubjectsubjectsubject objectobjectobjectobjectpredicatepredicate
articlearticlearticlearticle has creatorhas creator JimJimJimJim
http://dbpedia.org/resource/James_Hendlerhttp://dbpedia.org/resource/James_Hendlerhttp://dbpedia.org/resource/James_Hendlerhttp://dbpedia.org/resource/James_Hendler
doi:10.1109/MC.2009.30doi:10.1109/MC.2009.30
http://purl.org/dc/elements/1.1/http://purl.org/dc/elements/1.1/creatorcreator
http://dbpedia.org/resource/http://dbpedia.org/resource/James_HendlerJames_Hendlerhttp://dbpedia.org/resource/http://dbpedia.org/resource/James_HendlerJames_Hendler
doi:10.1109/MC.2009.30doi:10.1109/MC.2009.30
http://purl.org/dc/elements/1.1/http://purl.org/dc/elements/1.1/creatorcreator
?s?s?s?s ?blackboard?blackboard?blackboard?blackboarddbpedia2:blackboarddbpedia2:blackboard
http://bit.ly/RumkhWhttp://bit.ly/RumkhWhttp://bit.ly/RumkhWhttp://bit.ly/RumkhW
?s?s?s?s ?blackboard?blackboard?blackboard?blackboarddbpedia2:blackboarddbpedia2:blackboard
http://bit.ly/Rumtlphttp://bit.ly/Rumtlphttp://bit.ly/Rumtlphttp://bit.ly/Rumtlp
?s?s?s?s ““There is no such monthThere is no such month
as “Rocktober”as “Rocktober”
““There is no such monthThere is no such monthas “Rocktober”as “Rocktober”dbpedia2:blackboarddbpedia2:blackboard
http://bit.ly/RumQwuhttp://bit.ly/RumQwuhttp://bit.ly/RumQwuhttp://bit.ly/RumQwu
http://bit.ly/RumQwuhttp://bit.ly/RumQwuhttp://bit.ly/RumQwuhttp://bit.ly/RumQwu
http://dbpedia.org/resource/Double,_Double,_Boy_in_Troublehttp://dbpedia.org/resource/Double,_Double,_Boy_in_Troublehttp://dbpedia.org/resource/Double,_Double,_Boy_in_Troublehttp://dbpedia.org/resource/Double,_Double,_Boy_in_Trouble
Use Use URIsURIs as names for things as names for things
Use Use HTTP URIsHTTP URIs so that people can look up so that people can look up those names (on the Web)those names (on the Web)
When someone looks up a URI, returnWhen someone looks up a URI, returnuseful information, using the standards useful information, using the standards ((RDFRDF*, *, SPARQLSPARQL))
Include Include links to other URIs,links to other URIs, so that they can so that they can discover more thingsdiscover more things
Use Use URIsURIs as names for things as names for things
Use Use HTTP URIsHTTP URIs so that people can look up so that people can look up those names (on the Web)those names (on the Web)
When someone looks up a URI, returnWhen someone looks up a URI, returnuseful information, using the standards useful information, using the standards ((RDFRDF*, *, SPARQLSPARQL))
Include Include links to other URIs,links to other URIs, so that they can so that they can discover more thingsdiscover more things
Use Use URIsURIs as names for things as names for things
Use Use HTTP URIsHTTP URIs so that people can look up so that people can look up those names (on the Web)those names (on the Web)
When someone looks up a URI, returnWhen someone looks up a URI, returnuseful information, using the standards useful information, using the standards ((RDFRDF*, *, SPARQLSPARQL))
Include Include links to other URIs,links to other URIs, so that they can so that they can discover more thingsdiscover more things
Use Use URIsURIs as names for things as names for things
Use Use HTTP URIsHTTP URIs so that people can look up so that people can look up those names (on the Web)those names (on the Web)
When someone looks up a URI, returnWhen someone looks up a URI, returnuseful information, using the standards useful information, using the standards ((RDFRDF*, *, SPARQLSPARQL))
Include Include links to other URIs,links to other URIs, so that they can so that they can discover more thingsdiscover more things
Mashup: Mashup: OrgPedia Open Corporate DataOrgPedia Open Corporate DataMashup: Mashup: OrgPedia Open Corporate DataOrgPedia Open Corporate Data
http://tw.rpi.edu/orgpedia/http://tw.rpi.edu/orgpedia/
Mashup: Mashup: RPI Research CentersRPI Research CentersMashup: Mashup: RPI Research CentersRPI Research Centers
Mashup: Mashup: RPI Research CentersRPI Research CentersMashup: Mashup: RPI Research CentersRPI Research Centers
Linked Data Publication:Linked Data Publication: HHS Health Data HHS Health DataLinked Data Publication:Linked Data Publication: HHS Health Data HHS Health Data
Linked Data Publication:Linked Data Publication: HHS Health Data HHS Health DataLinked Data Publication:Linked Data Publication: HHS Health Data HHS Health Data
Linked Data Publication:Linked Data Publication: HHS Health Data HHS Health DataLinked Data Publication:Linked Data Publication: HHS Health Data HHS Health Data
Linked Data Publication:Linked Data Publication: HHS Health Data HHS Health DataLinked Data Publication:Linked Data Publication: HHS Health Data HHS Health Data
Linked Data Publication:Linked Data Publication: HHS Health Data HHS Health DataLinked Data Publication:Linked Data Publication: HHS Health Data HHS Health Data
Example:Example: Extending a Sci Publishing Portal Extending a Sci Publishing PortalExample:Example: Extending a Sci Publishing Portal Extending a Sci Publishing Portal
Idea: Idea: Linking Data-driven Apps with “Smart Content”Linking Data-driven Apps with “Smart Content”
http://inference-web.org/wiki/Semantic_Water_Quality_Portalhttp://inference-web.org/wiki/Semantic_Water_Quality_Portalhttp://inference-web.org/wiki/Semantic_Water_Quality_Portalhttp://inference-web.org/wiki/Semantic_Water_Quality_Portal
Discovery visualizations
Analytics and mining
Global Census, Virtual Mineral Laboratory, ...
IntegratedApplications
Application-level mediation: vocabulary,mapping to science and data terms
Semanticinteroperability
SemanticinteroperabilitySoftware,
Tools & Apps
DataRepositories
….
Semantic query,hypothsis and
inference
Query,access anduse of data
Metadata,schema,
data... ... ...
Deep Energy/ Life
Applications
Physics/ Chemistry
Models
Res/FluxApplications
GVP MINDAT EOS EarthChem
Semantic mediation: physics, chemistry, mineral, emission data - ChemML,
Schematic for Deep Carbon Virtual Observatory and Interoperability
Emission/ Compositions
...the purpose of the lecture is to summarize the Semantic Web
with key concepts and the introduction of a few advanced ideas
that will be useful to these graduating seniors in grad school
or their careers...
key concepts...
RDF, SPARQL,RDF, SPARQL,Linked Data, Linked Data,
mashups, dataviz,mashups, dataviz,RDFa, microformats,RDFa, microformats,
Schema.orgSchema.org
Semantic Web
key concepts... advanced ideas...
RDF, SPARQL,RDF, SPARQL,Linked Data, Linked Data,
mashups, dataviz,mashups, dataviz,RDFa, microformats,RDFa, microformats,
Schema.orgSchema.org
ontology, inference,ontology, inference,reasoning, provenance,reasoning, provenance,
machine learning,machine learning,policy-based systemspolicy-based systems
Semantic Web
key concepts... advanced ideas...
RDF, SPARQL,RDF, SPARQL,Linked Data, Linked Data,
mashups, dataviz,mashups, dataviz,RDFa, microformats,RDFa, microformats,
Schema.orgSchema.org
ontology, inference,ontology, inference,reasoning, provenance,reasoning, provenance,
machine learning,machine learning,policy-based systemspolicy-based systems
careers...
Semantic Web