Kodo Millet PPT made by Ghanshyam bairwa college of Agriculture kumher bhara...
Linked Data and SKOS
1. Linked Data and SKOS
2011 Workshop on Physics Classification, Boston
November 28th, 2011
Bernhard Haslhofer | Cornell University, Information Science
5. Web Architecture
HTML HTML HTML
hyperlinks hyperlinks
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
6. But sometimes we need programmatic
access the underlying content, metadata, and
vocabularies.
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
7. Web APIs
API API API API API
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
8. Web APIs - Drawbacks
• Each Web API has a proprietary interface
• Datasources must be known in advance
• Information entities (papers, authors,
subjects, etc.) are not linked
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
9. Linked Open Data Vision
• Publish and link structured data on the Web
• Create a single global data space based on
the Architecture of the World Wide Web
RDF RDF RDF
RDF links RDF links
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
10. Linked Data Example
http://xmlns.com/foaf/
spec/#term_Person
N. M. R. Peres
...
rdf:type
http://purl.org/ontology/
bibo/Article foaf:name
http://arxiv.org/authors/ http://aps.org/authors/
owl:sameAs
Peres_N peres_nmr
rdf:type
dcterms:creator dcterms:creator
http://arxiv.org/resource/ http://prb.aps.org/resource/
owl:sameAs
cond-mat/0512091 PRB/v73/i12/e125411
dc:title
...
Electronic Properties of Disordered
Two-Dimensional Carbon
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
11. Publishing Linked Data
• Distinguish between non-information (NIR) and
information resource (IR)
• Sample NIR
• http://arxiv.org/resource/cond-mat/0512091
• Sample IRs
• http://arxiv.org/abs/cond-mat/0512091 (HTML)
• http://arxiv.org/data/cond-mat/0512091 (RDF)
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
12.
13. The Simple Knowledge
Organization System (SKOS)
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
14. What is SKOS?
• A language for describing controlled
vocabularies (taxonomies, classification
schemes, thesauri)
• Builds on Linked Data principles
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
18. SKOS Example
skos:broader
skos:Concept
...
skos:Concept
skos:related
arxiv:cond-mat
skos:narrower
skos:closeMatch
dbpedia:
Condensed_matter_
physics
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
19. SKOS Examples
ex1:someConceptScheme ex2:otherConceptScheme
skos:Concept skos:Concept
arxiv:cond-mat aps:....
skos:exactMatch
skos:Concept skos:broadMatch skos:Concept
arxiv:physics.data-
aps:....
an
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011
20.
21.
22. Summary
• Linked Data is about exposing and linking
structured data on the Web
• SKOS is a language for expressing
controlled vocabularies
• SKOS vocabularies can be published as
Linked Data
2011 Workshop on Physics Classification | Boston, MA | Nov. 28th, 2011