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Reasoned SPARQL

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Reasoned SPARQL

  1. 1. ELIS  –  Mul*media  LabReasonedSPARQLSam Coppens, Miel Vander Sande, Ruben Verborgh,Erik Mannens, Rik Van de Walle,
  2. 2. SPARQL
  3. 3. JACK BAUER INTERROGATION TECHNIQUEWhen asking politely just isn’t enoughReasoning ondistributed data
  4. 4. ReasonedSPARQL
  5. 5. ELIS  –  Mul*media  LabGoal: Reasoning as a ServiceSmart SPARQL agentsoutsource reasoning to appropriate infrastructure(client-side, server-side, or third party)ClientServer /DataProviderReasoning OWL QLOWL RL / EL
  6. 6. ELIS  –  Mul*media  LabSmart SPARQL AgentGoal: Reasoning as a ServiceClientServer /DataProviderReasoningReasoningGridGoal: Reasoning as a ServiceSmart SPARQL agentsoutsource reasoning to appropriate infrastructure(client-side, server-side, or third party)
  7. 7. ELIS  –  Mul*media  LabDistributed Reasoning (LarKC)IdentificationSelectionTransformationReasoningDecisionREASON<http://test.com/rules.n3>OVER {?s ?p ?o}WHERE {?s ?p ?o}Solution: ‘Reason’ Query Form
  8. 8. ELIS  –  Mul*media  LabSPARQL 1.1: Support for entailment regimes(RDFS, OWL) by means of BGP matchingData provider decides inference rules supportWith reasoned SPARQL, the data consumerchoses the inference rules for reasoning
  9. 9. ELIS  –  Mul*media  LabNested QueriesSELECT ?childWHERE {:Jenna :child ?child .{REASON {{ ?x :parent ?y } => { ?y :child ?x } .}OVER {?s :parent ?o .}WHERE {?s a :Person; :parent ?o .}}}
  10. 10. ELIS  –  Mul*media  Lab•Workload BalancingREASON {{ ?x foaf:knows ?y } => { ?y foaf:knows ?x } .}OVER {:Jenna foaf:knows ?person .}WHERE{{SERVICE <http://example.org/sparql> {:Jenna foaf:knows ?person .} } UNION {SERVICE <http://example2.org/sparql> {:Jenna foaf:knows ?person .} }}
  11. 11. ELIS  –  Mul*media  LabPitfallsIncomplete reasoning / errorslike SPARQLServer-side vs. client-side reasoningprobably OWL QL reasoningserver-side BGP matchingOWL RL and EL will happen client-side
  12. 12. ELIS  –  Mul*media  LabDistributed reasoning on top of distributed queryingReasoning as a serviceUse CasesEnd userDistributedReasoningFrameworkEndpointsEndpointsEndpointsClientExternalReasonerEndpoint
  13. 13. ELIS  –  Mul*media  LabReasoning ondistributed dataSPARQL
  14. 14. ReasonedSPARQL
  15. 15. ELIS  –  Mul*media  Lab
  16. 16. ELIS  –  Mul*media  LabSam Coppens, Miel Vander Sande, Ruben Verborgh,Erik Mannens, Rik Van de Walle,ReasonedSPARQLUsing SPARQL agents to obtain answersthrough distribution and reasoning

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