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Re: extend an Ontology

From: Pat Hayes <phayes@ai.uwf.edu>
Date: Tue, 16 Oct 2001 00:06:19 -0500
Message-Id: <p05101018b7f1707f06f1@[205.160.76.193]>
To: Wolfgang Nejdl <nejdl@kbs.uni-hannover.de>
Cc: www-rdf-logic@w3.org
>  > [1  <text/plain; iso-8859-1 (8bit)>]
>>  I think I did not express my self clearlyÖ or else I did not fully
>>  understand the reply
>>
>>  What I had in mind is, in an existing ontology one of the ObjectProperties
>>  is applicable over a certain rangeÖ Would it be possible to use the same
>>  property but use a different range..In this case the range is another class?
>>
>
>No, you can only restrict the range of the property, not change it
>completely to another range (in DAML+OIL; in RDFS you can't even do
>that, because only one range is allowed per property)

Actually RDFS now mirrors DAML in this respect.

Pat
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Received on Tuesday, 16 October 2001 01:06:22 GMT

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