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Re: semantics of daml:equivalentTo [was: Comments on Annotated DAML 1.6]

From: Pierre-Antoine CHAMPIN <champin@bat710.univ-lyon1.fr>
Date: Thu, 12 Oct 2000 14:23:11 +0200
Message-ID: <39E5AD2F.6F5EFB92@bat710.univ-lyon1.fr>
To: Dan Connolly <connolly@w3.org>
CC: Grit Denker <denker@csl.sri.com>, www-rdf-logic@w3.org
There is something bothering me aboutdaml:equivamentTo :
the schema specifies that it is a subProperty of both rdfs:subPropertyOf and rdfs:subClassOf.

Which means that when you state

  daml:equivalentTo( daml:Class, rdfs:Class )

you state that daml:Class is a subclass of rdfs:Class (ok),
but *also* that daml:Class is a subProperty of rdfs:Class (less ok...),
from which I can infer that daml:Class and rdfs:Class are properties (not ok at all)
(because the domain and range of rdfs:subPropertyOf are both rdf:Property)

Ok, the inference above is a bit farfetched,
but anyway, I don't think that was what you meant...


Sometimes I think the surest sign that intelligent life exists elsewhere in the
universe is that none of it has tried to contact us.
(Bill Watterson -- Calvin & Hobbes)
Received on Thursday, 12 October 2000 08:23:56 UTC

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