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Re: unspecified domain,range in App. C of OWL Language Reference 31 March 2003

From: Guus Schreiber <schreiber@cs.vu.nl>
Date: Tue, 15 Jul 2003 21:56:34 +0100
Message-ID: <3F146A82.2080202@cs.vu.nl>
To: "Richard H. McCullough" <rhm@cdepot.net>
CC: public-webont-comments@w3.org

Unspecified domain,range in App. C of OWL Language Reference

 > From: Richard H. McCullough (rhm@cdepot.net)
 > Date: Fri, May 09 2003
 > There are several blanks in the table.
 > Shouldn't any "missing" domain,range
 > be replaced by owl:Thing?


Thanks for your comment and sorry for the late reply.
The domain/range of some of the built-in OWL
properties is left open on purpose:

owl:hasValue      domain: owl:Restriction range:

The object of owl:hasValue can be either an individual or a literal,
not just an individual (as a range of owl:Thing would imply). See
sec. of Reference:

The value constraint owl:hasValue is a built-in OWL property that links
a restriction class to a value V, which can be either an individual or
a data value.

owl:versionInfo domain:   range:

The subject of owl:versionInfo is not restricted to a particular
type, see Sec. 7.4.1:

Although this property is typically used to make statements about
ontologies, it may be applied to any OWL construct.

The object of owl:versionInfo is often, but not necessarily, a string:

An owl:versionInfo statement generally has as its object a string ....

Please respond, cc-ing public-webont-comments@w3.org, whether this
response is satisfactory.

Guus Schreiber
Free University Amsterdam, Computer Science
De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
Tel: +31 20 444 7739/7718
E-mail: schreiber@cs.vu.nl
Home page: http://www.cs.vu.nl/~guus/
Received on Tuesday, 15 July 2003 16:56:41 UTC

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