IASSIST 2011 - Representation of the Data Documentation Initiative using Semantic Web Technologies [Thomas Bosch - 02.06.2011]
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IASSIST 2011 - Representation of the Data Documentation Initiative using Semantic Web Technologies [Thomas Bosch - 02.06.2011]

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37th International Association for Social Science Information Services & Technology (IASSIST 2011) [30.05.2011 - 03.06.2011; Vancouver, Canada]

37th International Association for Social Science Information Services & Technology (IASSIST 2011) [30.05.2011 - 03.06.2011; Vancouver, Canada]

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IASSIST 2011 - Representation of the Data Documentation Initiative using Semantic Web Technologies [Thomas Bosch - 02.06.2011] IASSIST 2011 - Representation of the Data Documentation Initiative using Semantic Web Technologies [Thomas Bosch - 02.06.2011] Presentation Transcript

  • Representation of theData Documentation Initiative using Semantic Web Technologies IASSIST 2011 02.06.2011 Thomas Bosch (research associate, GESIS Leibniz Institute for the Social Sciences)
  • Agenda• What is the Semantic Web (SW)?• Why should the SW be applied in the context of DDI?• Take-aways and Discussion 2
  • RDF Triples AgeSubject references Predicate What age? Object 3
  • Ontologiesclass property class domain range Variable references Question type type type Age What age? referencesresource resource resource 4
  • Agenda• What is the Semantic Web (SW)?• Why should the SW be applied in the context of DDI?• Take-aways and Discussion 5
  • Publish and Link DDI Data and Metadata Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/ 6
  • Semantic Queries• What kinds of problems can be solved?• Queries on multiple, distributed and merged DDI instances• Formulation using DDI domain concepts ?question contains questionScheme ?questionSELECT ?question ?questionWHERE { questionScheme contains ?question. } 7
  • Integration of Other Ontologies• Ontology domain classes can relate to similar concepts of external ontologies• Reasoner may use additional semantic information DDI Other Ontology Ontologies (Question) (Question) 8
  • DDI Consistency Check• Definition of consistency• OWL reasoning techniques• Class consistency• Global consistency• Global consistency of DDI ontology Global consistency of DDI data model 9
  • Concept HierarchyVariable Concept Concept Concept SimilarConceptReference SimilarConcept Difference Reference text + html (superClassOf) 10
  • Concept Hierarchy Concept subConceptOf hasConceptVariable 11
  • DDI Elements‘ Comparability Grade_USA hasCode subClassOf A subClassOfVariable Code subClassOf 1.0 subClassOf hasCode Grade_Germany• Necessary conditions (equality, inequality, similarity, …) 12
  • References OtherMaterial type ExternalURL Citation Relationship Reference RelatedTo DCElements ... ReferenceTitle Creator URN … … ... 13
  • References OtherMaterial type Drawbacks: ExternalURL Citation Relationship Reference • Complex data model • No intuitive semantics RelatedTo DCElements ... • Bibliographic citation Reference limits • Ensure reusability?Title Creator URN … … ... 14
  • Semantic References referencesPublicationReferencing Publication IDPublication subClassOf X publicationReferencedBy Variable Title Creator Date URL 15
  • Agenda• What is the Semantic Web (SW)?• Why should the SW be applied in the context of DDI?• Take-aways and Discussion 16
  • http://ddiandsemanticweb.blogspot.com Subject Predicate Assertional RDFTriple Ontology Terminological Object