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Graphics
Ontologies
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RDFS is useful, but does not solve all possible
requirements
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Complex applications may want more possibilities:
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- characterization of properties (not only listing their range
and domain)
- identification of objects with different URI-s
- disjointness or equivalence of classes
- construct classes, not only name them
- more elaborate class hierarchies
- can a program reason about some terms? E.g.:
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- “if «Person» resources «A» and «B» have the same
«foaf:email» property, then «A» and «B» are identical”
- restrict a property range when used for a specific class
- etc.