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rdf [2018/08/20 20:57]
christian [Triple store]
rdf [2018/08/20 21:02]
christian [Triple store]
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 === Schemas and inferencing === === Schemas and inferencing ===
  
-Schemas (or Vocabularies or ontologies) for RDF can be easily (?) defined by anyone. A schema itself is defined in RDF. Commonly used (and sometimes mixed) are RDFS (RDF Schema) and OWL (Web Ontology Language). Besides concepts like ''Class'' and ''Property'', predicates and value restrictions, an ontology also defines properties for relationships. For example you can define that the relation ''married'' between two persons is symetrical; or that the ''subclass'' relationship is transitive.+Schemas (or Vocabularies or ontologies) for RDF can be easily (?) defined by anyone. A schema itself is defined in RDF. Commonly used (and sometimes mixed) are [[https://www.w3.org/TR/rdf-schema/|RDFS]] (RDF Schema) and [[https://www.w3.org/2001/sw/wiki/OWL|OWL]] (Web Ontology Language). Besides concepts like ''Class'' and ''Property'', predicates and value restrictions, an ontology also defines properties for relationships. For example you can define that the relation ''married'' between two persons is symetrical; or that the ''subclass'' relationship is transitive.
  
 With this, only basic facts have to be entered into a triple store. Many more facts can get deducted / inferenced. It would be an interesting project to build such an inferencer. I wonder if Gemstone would make a good triplestore. With this, only basic facts have to be entered into a triple store. Many more facts can get deducted / inferenced. It would be an interesting project to build such an inferencer. I wonder if Gemstone would make a good triplestore.
  • rdf.txt
  • Last modified: 2020/03/18 09:09
  • by christian