CODEWITHSUNDEEP
owlontologyprotege
alex
alex

Reputation: 7905

OWL: scoped domain and range

What is the difference between scoped domain and domain? Also scoped range and range. And how is it defined in Protege for a single property to have two different scoped domains or scoped ranges?

P.S. I mean using two different scoped domain means:
R has range B if domain is A
R has range D if domain is C

Upvotes: 2

Views: 501

Answers (1)

Stanislav Kralin
Stanislav Kralin

Reputation: 11479

The fact that the domain of the object property R is A could be written in this way:

R some owl:Thing SubClassOf A

The fact that the range of the object property R is B could be written in this way:

owl:Thing SubClassOf R only B

One can generalize these records slightly.

The domain of R scoped with / by B is A:

R some B SubClassOf A

The range of R scoped with / by A is B:

A SubClassOf R only B

In Protégé, one can type these axioms in these places (pressing the ⊕ button as many times as one wishes):

  • Active Ontology > General Class Axioms > General Class Axioms, or
  • Entities > Classes > [Class] > Description > General Class Axioms.

Also, the OWLAx plugin can generate both scoped and non-scoped axioms.

In DL terms, scoped domain and range axioms are:

  • ∃R.B ⊑ A instead of ∃R.⊤ ⊑ A,
  • A ⊑ ∀R.B instead of ⊤ ⊑ ∀R.B.

In SWRL terms:

  • B(?y) ^ R(?x,?y) -> A(?x) instead of R(?x,?y) -> A(?x),
  • A(?x) ^ R(?x,?y) -> B(?y) instead of R(?x,?y) -> B(?y).

Upvotes: 4

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