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Linking Data, Linking People


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2010 International Symposium on Agricultural Ontology Services

2010 International Symposium on Agricultural Ontology Services

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  • 1. Linking Data, Linking People 2010 International Symposium on Agricultural Ontology Service John Fereira, Cornell University
  • 2. An RDF Graph John Fereira Cornell University isAnEmployeeOf • Subject: John Fereira • Predicate: isAnEmployeeOf • Object: Cornell University
  • 3. What is an Ontology? • an ontology defines a set of representational primitives with which to model a domain of knowledge or discourse.
  • 4. My Definition of an Ontology • An Ontology is the language, or vocabulary used by practitioners in a specific domain. • Essentially it is a controlled vocabulary for a specific subject area, • Geographic Names Ontology defines terms for things like: • Park, Shelf, Saddle • Terms might have different means if using a different ontology
  • 5. Sample RDF can describe members <foaf:Organization> <foaf:name>Cornell University</foaf:name> <dc:type rdf:about="">nonprofit< /dc:type> <foaf:member> <foaf:Person> <foaf:name>John Fereira</foaf:name> </foaf:Person> <foaf:Person> <foaf:name>Aaron Godert</foaf:name> </foaf:Person> </foaf:member> </foaf:Organization>
  • 6. Code4Lib: Code For Libraries
  • 7. <?xml version="1.0" encoding="UTF-8"?> ... <Person rdf:about=""> <name>Zoia</name> <nick>zoia</nick> <depiction rdf:resource="" /> <based_near rdf:parseType="Resource"> <geo:lat>40.7355556</geo:lat> <geo:long>-74.1727778</geo:long> </based_near> <s:comment>This URI indentifies me the person. Feel free to use it when making statements about me the person (such as "your_uri foaf:knows").</s:comment> <knows> <Person rdf:about=""> <nick>gsf</nick> </Person> </knows> <swc:attendeeAt rdf:resource="" /> <swc:attendeeAt rdf:resource="" /> <interest rdf:resource=""/> <interest rdf:resource=""/> </Person> </rdf:RDF>
  • 8. Linked Data principles Tim Berners-Lee: • Use URIs as names for things • Use HTTP URIs so that people can look up those names using the web • When someone looks up a URI, provide useful information, using the standards (RDF, SPARQL) • Include links to other URIs so that people can discover more things
  • 9. Vivo in the Open Data Cloud
  • 10. Food security
  • 11. Melbourne Central Research Data Registry
  • 12. SKE Knowledge Environment
  • 13. Biomedical and Health Knowledge Environment
  • 14. Unique Identifier for Michael Conlon • • would be better
  • 15. Requesting RDF using an Accept Header • curl -H "Accept: application/rdf+xml" -X GET
  • 16. Querying Triples with SPARQL • By individual URI (subject or object) • Everything about one event, a grant, a person • By property relationship (verb) • All organizations that are part of another • By type • Everything with an rdf:type of Event, Person, or Project • By combinations of the above • SPARQL leverages the RDF format to focus on the data
  • 17. Enabling National Networking of Scientists
  • 18. Vivoweb is open source
  • 19. cancer
  • 20. Visualizing RDF as a map
  • 21. Querying the CIARD ring with SPARQL
  • 22. Ciard Ring SPARQL Query results
  • 23. Thank You Zie Zie
  • 24. Linking Data, Linking People A collection of links Ontology defined on Wikipedia e) Example of FOAF Semantic Web Conference Ontology Code4Lib Code4Lib "Zoia" Linked Data Principals Linked Data site Cornell Vivo (classic Vivo) Melbourne Central Research Data Registry ndex.jsp?primary=1 Subject Knowledge Environment Vivo at University of Florida Semantic Web Services app vices/ Cornell Classics Department site Vivoweb Vivoweb on Sourceforge