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Re: ACTION-210: Review on "Conformance" section

From: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk>
Date: Mon, 22 Sep 2008 07:22:36 +0100
Message-Id: <B2BA77C8-0EB0-4829-AC12-7A99F9DDA353@comlab.ox.ac.uk>
Cc: <public-owl-wg@w3.org>
To: Michael Schneider <schneid@fzi.de>

I already reported (I think) that I incorporated the conformance text  
into Test [1] -- now called Conformance and Test Cases. I also made a  
few updates, including e.g., fixing up the RFC 2119 text. Not much  
else has changed, however, so I wouldn't bother re-reviewing it.  
Anyway, I will take a look at your comments and see what I can do to  
address them.

Thanks,
Ian

[1] http://www.w3.org/2007/OWL/wiki/Test



On 21 Sep 2008, at 12:43, Michael Schneider wrote:

> Dear all,
>
> this mail is to fulfill my ACTION-210 (related to ISSUE-130) on  
> reviewing the "Conformance" section based on version
>
>   <http://www.w3.org/2007/OWL/wiki/index.php? 
> title=Conformance&oldid=12922>
>
> However, there are still a few points which I like to check in more  
> depth later this day. So it may happen that I come up with a second  
> mail tomorrow.
>
>
> * Start of sec. 1
>   """
>   This section uses the words
>   MUST, MUST NOT, SHOULD and MAY
>   as in [RFC 2119].
>   """
>
> We now have some standard text used in many of our documents (e.g.  
> in sec. 1.1 of the Syntax). This should be used here, too, I think.
>
> Afterwards, everywhere in the text the rendering of the occurrences  
> of these keywords have to be changed, accordingly.
>
> * 1.1.1: Syntactic Conformance
>   """
>   Any RDF document [RDF Syntax] is an OWL 2 Full ontology document.
>   [...]
>   An OWL 2 Full ontology document is an OWL 2 DL ontology document  
> iff [...]
>   """
>
> What is with non-RDF documents, such as documents in Functional  
> Syntax or OWL/XML? These are not treated by the definition of  
> "syntactical conformance".
>
> * 1.1.2: Semantic Conformance
>   """
>   In OWL 2, semantic conditions are defined
>   with respect to a datatype map [OWL 2 Specification].
>   This MUST be either the OWL 2 Datatype map [OWL 2 Specification]
>   or an extension of the OWL 2 Datatype map
>   to include additional datatypes.
>   """
>
> The headline "semantic conformance" seems a bit broad to me, given  
> that the requirements stated in this section are restricted to  
> datatype maps.
>
> Further, there are certain restrictions on the datatype map at  
> least for OWL 2 RL, see
>
>   <http://www.w3.org/2007/OWL/wiki/Fragments_Proposal#Entities_3>
>
>   "The following predefined OWL 2 datatypes
>   MUST NOT be used in OWL 2 RL: ..."
>
> This sounds to me as if an OWL 2 RL reasoner cannot be semantically  
> conformant!?
>
> * 1.2.1: Entailment Checker
>   """
>   An OWL 2 entailment checker takes as input two
>   OWL 2 ontology documents [...]
>   """
>
> The term "OWL 2 ontology document" is undefined. It should perhaps  
> be said that this is some kind of "collective term" for those terms  
> defined in the "syntactic conformance" section.
>
> * 1.2.1 Entailment Checker
>   """
>   Five different conformance classes of
>   OWL entailment checker are defined
>   """
>
> Should be: "OWL /2/ entailment checker/s/".
>
> (I guess this was in to check the reviewers? ;-))
>
> * 1.2.1 Entailment Checker, Conformance Classes
>
> Just as a note (probably no action needed): All five entailment  
> checker classes now allow for trivial checkers which never  
> terminate or which always return "UNKNOWN" (in spite of the  
> explicit "SHOULD NOT"). That's sort of strange, but maybe there is  
> no way to deal with this situation in a meaningful way.
>
> Regards,
> Michael
>
> --
> Dipl.-Inform. Michael Schneider
> FZI Forschungszentrum Informatik Karlsruhe
> Abtl. Information Process Engineering (IPE)
> Tel  : +49-721-9654-726
> Fax  : +49-721-9654-727
> Email: Michael.Schneider@fzi.de
> Web  : http://www.fzi.de/ipe/eng/mitarbeiter.php?id=555
>
> FZI Forschungszentrum Informatik an der Universität Karlsruhe
> Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe
> Tel.: +49-721-9654-0, Fax: +49-721-9654-959
> Stiftung des bürgerlichen Rechts
> Az: 14-0563.1 Regierungspräsidium Karlsruhe
> Vorstand: Rüdiger Dillmann, Michael Flor, Jivka Ovtcharova, Rudi  
> Studer
> Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
>
Received on Monday, 22 September 2008 06:23:33 UTC

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