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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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- similarity and/or differences of terms (properties or
classes)
- construct classes, not just name them
- 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”
- etc.
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This lead to the development of OWL (Web Ontology
Language)