Linked Data Tutorial for Absolute Beginners
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Linked Data Tutorial for Absolute Beginners
- 1. Tutorial Linked Data for Absolute Beginners What is Linked Data good for? Andreas Blumauer Semantic Web Company (SWC) http://www.semantic-web.at/ http://blog.semantic-web.at/ Web 2.0 – What´s next?
- 4. Data from Databases can be exposed to the Web via HTML Persons Organisations
- 5. Data from Databases can be accessed via APIs getLocation(„SWC“) Persons Organisations getWorkplace(„Andreas“) <workPlace> Vienna </workPlace> <location> Austria </location>
- 6. (Some) Information on the Web can be found via search engines Google & Co Questions won´t be answered necessarily
- 10. Is Mapping the solution? Mapped! same country? What, if DB-owners can´t agree on a common model? Vienna work_place Austria location Still not clear … . … . … . Mike DB engineering TU Vienna 08-19 Andreas course university date_birth name Students And what, if we need to add another database?
- 13. Resources work_place location place isA isA Austria Vienna partOf type type
- 14. URIs & Namespaces geo:point geonames:country umbel:place rdfs:subClassOf dbpedia:Austria dbpedia:Vienna p:subdivisionName rdfs:subClassOf rdf:type dbpedia: Vienna http://dbpedia.org/resource/ Vienna = rdf:type rdfs: subClassOf = http://www.w3.org/2000/01/rdf-schema# subClassOf
- 15. Ontologies work_place location place Person Organisation University worksFor studiesAt isA has isA isA has Austria Vienna partOf type type
- 17. Expose data from databases as resources & triples on the web Persons dbpedia:Vienna persons:Andreas foaf:based_near Organisations dbpedia:Austria orgs:SWC foaf:based_near … . … . … . Mike dbpedia:Semantic Web dbpedia:Vienna 08-19 Andreas foaf:topic_interest foaf:based_near foaf:birthday foaf:name persons:Mike persons:Andreas … . … . … . Zitgist IT-Consulting dbpedia:Austria 2004 SWC orgs:services foaf:based_near foaf:birthday foaf:name orgs:Zitigist orgs:SWC
- 18. Link data and do queries all over the web dbpedia:Vienna persons:Andreas foaf:based_near dbpedia:Austria orgs:SWC foaf:based_near Who is interested in „Semantic Web“ and is working in the same country as SWC is located? dbpedia:Semantic_Web foaf:topic_interest p:subdivisionName
- 19. Link data from more than 40 datasets Make use of more than 2 Billion triples! http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData
- 20. How to get answers on really complex questions? dbpedia:Vienna persons:Andreas foaf:based_near dbpedia:Austria orgs:SWC foaf:based_near Who is interested in „Semantic Web“ and is working in a country where the unemployment rate is lower than 5%? dbpedia:Semantic_Web foaf:topic_interest p:subdivisionName eurostat:Österreich owl:sameAs 4.8 eurostat:unemployment_rate_total
- 21. Use Case: Mobile DBpedia http://wiki.dbpedia.org/DBpediaMobile
- 22. Use Case: Life Sciences NeuronDB BAMS Literature Homologene SWAN Entrez Gene Gene Ontology Mammalian Phenotype PDSPki BrainPharm AlzGene Antibodies PubChem MESH Reactome Allen Brain Atlas http://www.w3.org/2001/sw/hcls/