Más contenido relacionado La actualidad más candente (20) Similar a Linked Data (20) Linked Data7. Classic Data : in silos Image: Bob Jagensdorf, http://flickr.com/photos/darwinbell/, CC-BY 9. What do we actually want? Use the Web like a single global database. 13. Web APIs slice the Web into separate data silos Image: Bob Jagensdorf, http://flickr.com/photos/darwinbell/, CC-BY 14. What do we want? Use the Web as a single global database using what we know works on the Web 26. The RDF Data Model Richard Cyganiak dbpedia:Berlin foaf:name foaf:based_near foaf:Person rdf:type pd:cygri 27. Data objects are identified with HTTP URIs pd:cygri Richard Cyganiak dbpedia:Berlin foaf:name foaf:based_near foaf:Person rdf:type pd:cygri = http://richard.cyganiak.de/foaf.rdf#cygri dbpedia:Berlin = http://dbpedia.org/resource/Berlin 28. Follow Your Nose... Richard Cyganiak dbpedia:Berlin foaf:name foaf:based_near foaf:Person rdf:type pd:cygri dp:Cities_in_Germany 3.405.259 dp:population skos:subject 29. Dereferencing URIs over the Web Richard Cyganiak dbpedia:Berlin foaf:name foaf:based_near foaf:Person rdf:type dbpedia:Hamburg dbpedia:Muenchen skos:subject skos:subject pd:cygri dp:Cities_in_Germany 3.405.259 dp:population skos:subject 36. What of Web Services? “ Web APIs Are Just Web Sites” - Paul Downey Linked Data is exposed as (very simple) RESTful services 37. What of RDF Stores? A triplestore is just a cache of a chunk of the Semantic Web Convenient for data merging, querying (SPARQL) and inference See also: Semantic Web Client Library 38. What of the Real World? source: http://danbri.org/words/2008/04/15/300 based on timbl 1994 60. Example : First Pass @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix x: <http://purl.org/stuff/astro#> . x:Megrez rdf:type x:A3_dwarf ; x:magnitude "3.1" ; x:partOf [ rdf:type x:Constellation ; x:hasName "Ursa Major" ] . (RDF Turtle/N3 Syntax) 61. Example : Vocabulary @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix x: <http://purl.org/stuff/astro#> . x:Star rdf:type rdfs:Class . x:Constellation rdf:type rdfs:Class . x:A3_Dwarf rdfs:subClassOf x:Star . x:magnitude rdf:type rdf:Property . x:partOf rdf:type rdf:Property . x:hasName rdf:type rdf:Property . 63. Example : Better Linkage @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix x: <http://purl.org/stuff/astro#> . @prefix astro: <http://archive.astro.umd.edu/ont/astronomy.owl#> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix dolce: <http://www.loa-cnr.it/ontologies/DOLCE-Lite.owl#> . @prefix dbpedia: <http://dbpedia.org/resource/> . dbpedia:Delta_Ursae_Majoris rdf:type x:A3_Dwarf ; foaf:name "Megrez"; x:magnitude "3.1" ; dolce:part-of dbpedia:Ursa_Major ; rdfs:seeAlso <http://www.dcs.gla.ac.uk/workshops/semast09> . dbpedia:Ursa_Major rdf:type astro:Constellation . 65. New Vocabularies : voiD Vocabulary of Interlinked Datasets Classes: Dataset | Linkset | TechnicalFeature | Properties: statItem | feature | subset | target | sparqlEndpoint | linkPredicate | exampleResource | vocabulary | subjectsTarget | objectsTarget | dataDump | uriLookupEndpoint | uriRegexPattern | 67. "It is important to look as it as an interconnection bus, and it hasn't started working in earnest until one person's data is being used by some other unplanned use. This unexpected reuse is the measure." - Tim Berners-Lee, re. State of the Semantic Web Finishing Quotes