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Re: observation on owl:real

From: Dave Reynolds <der@hplb.hpl.hp.com>
Date: Fri, 17 Apr 2009 08:41:45 +0100
Message-ID: <49E832B9.5020009@hplb.hpl.hp.com>
To: Axel Polleres <axel.polleres@deri.org>
CC: "Public-Rif-Wg (E-mail)" <public-rif-wg@w3.org>
Axel Polleres wrote:
> Since owl:real is disjoint from float and double, it appears that the 
> lexical space for owl:real, i.e. those owl:real values lexically 
> expressible in RIF, actually just conincides with that of xs:decimal.
> So, one could say the lexical space of owl:real is the same as the one 
> for xs:decimal?
> Given that, I kind of fail to see the need for owl:real at all for our 
> purposes... resp., I fail to see where it would NOT coincide with 
> xs:decimal.
> Opinions?

This seems like a bug in the OWL specs.

I had assumed that owl:real would be redefined to be the union of float, 
double and decimal (perhaps better named owl:number).

Since, as you say, they have actually defined it as disjoint with float 
and double I agree it serves no purpose and should be dropped.

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Received on Friday, 17 April 2009 07:42:46 UTC

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