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Re: Anonymous individuals (again!)

From: Jeff Z. Pan <jeff.z.pan@abdn.ac.uk>
Date: Tue, 2 Dec 2008 15:16:09 +0000
Message-ID: <49355139.1000406@abdn.ac.uk>
To: Boris Motik <boris.motik@comlab.ox.ac.uk>
CC: <public-owl-wg@w3.org>

Hi Boris,

Thanks for the hard work. Are there any examples to illustrate why we
can have anonymous individuals in OWL 2 RL but not the other two profiles?

Thanks,

Jeff



Boris Motik wrote:
> Hello,
>
> The problems with anonymous individuals that I noticed in the Profiles made me look again at the global restrictions on anonymous
> individuals in Section 11.2. I noticed a slight error in the global restrictions, which I've fixed. After fixing this error, I
> realized that
>
> - the restriction on no anonymous individuals in OWL 2 EL and OWL 2 QL is strictly needed if we don't want to lose good
> computational properties;
>
> - however, in OWL 2 RL this restriction isn't needed -- that is, even with anonymous individuals reasoning in OWL 2 RL can be
> implemented in polynomial time.
>
> Consequently, I've removed the restriction on no anonymous individuals in OWL 2 RL from the Profiles document.
>
> I'm now done with all my changes to the spec -- we are ready to roll!
>
> Regards,
>
>       Boris
>
>
>
> The University of Aberdeen is a charity registered in Scotland, No SC013683.
>
>



The University of Aberdeen is a charity registered in Scotland, No SC013683.
Received on Tuesday, 2 December 2008 15:16:51 GMT

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