18 Sep 2004
CS 5244: Semantic Web
20/22
What about incompatible schemas? SW’s Answer: OWL
¡RDF Schema is fine if one person/organization is authoring all of SW
lInconsistencies among different authors
¡OWL strengthens RDF Schema with some 30 additional interchange properties
Did you say “To may to” or  “To mah to”?
I said “Poe
tay to”!
owl:samePropertyAs = A and B same across schemas
owl:inverseOf, A is inverse property of B
owl:TransitiveProperty, allows transitivity
(e.g. A à B, B à C, then A à C)