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12 Cards in this Set
- Front
- Back
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What is RDFS? |
RDFS is a language one can use to create a vocabulary for describing classes, subclasses, and properties of RDF resources |
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RDF Schema How is it done? |
RDF triples and the RDF vocabulary |
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Core elements of RDFS (4, 2,2) |
Core classes: rdfs:Resource, rdf:Property, rdfs:Class, rdfs:DataType Core properties: rdfs:subClassOf, rdfs:subPropertyOf Core constraints: rdfs:range, rdfs:domain |
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Simple RDFS |
rdf: RDF>rdfs:Class ID>
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RDFS Subclass |
rdf: RDF>rdfs:Class ID>rdfs:SubClassOf="ID"
OR full url |
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owned_by |
rdf:Property rdf:ID='owned by'>rdfs:Domain and rdfs:Range (Both of which have rdf:Resource) |
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Domain and range |
Range owns Domain |
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Multiple Domains |
Range must be in both domains |
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Inference using RDFS 1 |
Given a property name of P we can infer the class using domains of the property |
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Inference using RDFS 2 |
Identify resources class by Range |
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Inference using RDFS 3 |
Identify superclasses by following hierachy |
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Inference using RDFS 4 |
Lal>Mother>Perera |
