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Literals with datatypes defined by a datatype definition

From: Michael Schneider <schneid@fzi.de>
Date: Thu, 16 Dec 2010 21:34:20 +0100
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A002494B57@judith.fzi.de>
To: <public-owl-dev@w3.org>
Dear all!

I am trying to find out, from inspecting the OWL 2 specification, whether an
OWL 2 DL ontology can contain typed literals with datatypes that have been
defined by means of a datatype definition, as specified in Sec. 9.4 of [1].

For example, is the following text given in Functional Syntax a
syntactically valid OWL 2 DL ontology, or not?

    Declaration(DataProperty( ex:hasAge ))

    DatatypeDefinition( ex:Adult
        DatatypeRestriction( xsd:integer
            xsd:minInclusive "18"^^xsd:integer ))

    DataPropertyAssertion( ex:hasAge ex:alice "42"^^ex:Adult )

In the case of a positive answer, my next question is: does adding the
following axiom lead to a syntax error, or does it lead to a semantically
inconsistent ontology?

    DataPropertyAssertion( ex:hasAge ex:bob "14"^^ex:Adult )

Best,
Michael

[1] <http://www.w3.org/TR/2009/REC-owl2-syntax-20091027>

--
Dipl.-Inform. Michael Schneider
Research Scientist, Information Process Engineering (IPE)
Tel  : +49-721-9654-726
Fax  : +49-721-9654-727
Email: michael.schneider@fzi.de
WWW  : http://www.fzi.de/michael.schneider

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Received on Thursday, 16 December 2010 20:35:05 GMT

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