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Re: Review of Direct Semantics (ACTION 314)

From: Ivan Herman <ivan@w3.org>
Date: Wed, 08 Apr 2009 08:51:20 +0200
Message-ID: <49DC4968.1010907@w3.org>
To: Michael Schneider <schneid@fzi.de>, Boris Motik <boris.motik@comlab.ox.ac.uk>
CC: W3C OWL Working Group <public-owl-wg@w3.org>

Michael Schneider wrote:
>>> * ยง1, 2nd par: "Since OWL 2 is an extension of OWL DL, ..." Didn't we
>> want to
>>> turn away from this statement?
>> But this actually is true: each OWL DL ontology is an OWL 2 DL ontology,
>> and it is therefore an OWL 2 ontology. Hence, I don't really see a
>> problem with this statement.
> Yes, you are right. But what I actually had in mind was that we 
> had LC comments on this particular kind of statements, 
> for example LC 28/FH2, which specifically refers to this phrase in the 
> Direct Semantics:
>   <http://lists.w3.org/Archives/Public/public-owl-comments/2009Jan/0035.html>
> So, I strongly suggest to change the text here.
> I can see that, in this particular case, this statement is a rational
> for the observation that the Direct Semantics is also a semantics for
> the original OWL DL and OWL Lite. So, that's really good information 
> that people will be happy to learn.
> Suggestion, why not start the sentence with something approximately like:
>   "Since this semantics in this document is an extension 
>   of the Direct Semantics of OWL 1 ..."
> IMHO, this will be completely uncontentious for people outside the WG, 
> and will still meet the purpose of the sentence.

I must admit that I fully agree with Michael's reaction here. I know
that is _not_ Boris' intention, but the sentence could be understood by
saying that OWL 2 extends OWL DL only and nothing else, ie, only the OWL
2 DL with direct semantics is the _real_ one.

Let us not wake up sleeping animals like lions, dogs, shakals, or
whatever animal our respective languages use for this purpose:-)




Ivan Herman, W3C Semantic Web Activity Lead
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Received on Wednesday, 8 April 2009 06:51:53 UTC

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