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Re: Response to JC5

From: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk>
Date: Fri, 15 May 2009 22:49:33 +0100
Message-Id: <97E02B11-DB90-4541-954A-D47B3D86BF9E@comlab.ox.ac.uk>
Cc: <schneid@fzi.de>, <public-owl-wg@w3.org>
To: Peter F.Patel-Schneider <pfps@research.bell-labs.com>
Yes, that was exactly it -- too many JCs and/or fingers.

Thanks,
Ian


On 15 May 2009, at 21:57, Peter F.Patel-Schneider wrote:

> I believe that Ian mistyped, and has been referring to JC6.  He merged
> our two replies.
>
> I am happy with the merge.  If you are as well, I think that you can
> send it out tomorrow.
>
> peter
>
>
> From: "Michael Schneider" <schneid@fzi.de>
> Subject: RE: Response to JC5
> Date: Fri, 15 May 2009 22:51:29 +0200
>
>> Hi!
>>
>>> -----Original Message-----
>>> From: public-owl-wg-request@w3.org [mailto:public-owl-wg- 
>>> request@w3.org]
>>> On Behalf Of Ian Horrocks
>>> Sent: Friday, May 15, 2009 6:54 PM
>>> To: OWL 1.1
>>> Cc: Peter Patel-Schneider
>>> Subject: Response to JC5
>>>
>>> The current draft [1] looks good to me -- speak up now if you  
>>> disagree.
>>
>> No, please stop!
>>
>> """
>> Therefore the Working Group will not be making
>> any change to OWL 2 in response to this comment.
>> """
>>
>> This is NOT what I have communicated to TQ! The change of the  
>> names, as we
>> have discussed yesterday, is crucial:
>>
>>   owl:subject   --> owl:annotatedSource
>>   owl:predicate --> owl:annotatedProperty
>>   owl:object    --> owl:annotatedTarget
>>
>> And possibly also some explaining text, probably in NF&R and/or  
>> Primer, that
>> the annotation vocabulary is meant to be used exclusively for  
>> annotation
>> purposes in the specifically defined way, if there isn't such text  
>> already.
>>
>> Apart from this, in my discussion with TQ, I became aware that  
>> there might
>> really be an issue with getting back to RDF Reification for  
>> annotations, at
>> least a principle one. Topbraid Composer directly supports the  
>> reification
>> of arbitrary RDF statements, and mixing such unrestricted custom  
>> reification
>> with the very precisely defined annotation of axioms would  
>> possibly lead to
>> a mess.
>>
>> In particular, since RDF reification is intended to happens at  
>> triple level,
>> while axiom annotation, although also technically only reifying a  
>> "main
>> triple", targets the complete triple /set/ encoding a given axiom.  
>> So,
>> depending on the view, the same reification statement could have  
>> different
>> scopes, and this may well confuse tools. Also, different types of  
>> axioms are
>> annotated in a different way, only some of them in a reification- 
>> style. So
>> while RDF reification would on the one hand be used by users also  
>> for other
>> things than creating OWL annotations, on the other hand it  
>> wouldn't cover
>> axiom annotation completely.
>>
>> I still cannot precisely point to the bit which will definitely  
>> break the
>> system, so I have to think more deeply about this topic, but I  
>> believe that
>> there would be real hidden threads lurking around for some  
>> existing tools,
>> if we would use the RDF reification vocabulary for annotations.
>>
>> Anyway, the draft needs to be redrafted before we can send it. It's
>> currently not in line with my discussion with TQ.
>>
>> Michael
>>
>>> Peter: if you don't hear anything to the contrary please send it off
>>> tomorrow.
>>>
>>> Thanks,
>>> Ian
>>>
>>> [1] http://www.w3.org/2007/OWL/wiki/LC2_Responses/JC5
>>
>> --
>> Dipl.-Inform. Michael Schneider
>> Research Scientist, Dept. Information Process Engineering (IPE)
>> Tel  : +49-721-9654-726
>> Fax  : +49-721-9654-727
>> Email: michael.schneider@fzi.de
>> WWW  : http://www.fzi.de/michael.schneider
>> ===================================================================== 
>> ==
>> 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, RP Karlsruhe
>> Vorstand: Prof. Dr.-Ing. Rüdiger Dillmann, Dipl. Wi.-Ing. Michael  
>> Flor,
>> Prof. Dr. Dr. h.c. Wolffried Stucky, Prof. Dr. Rudi Studer
>> Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
>> ===================================================================== 
>> ==
>>
Received on Friday, 15 May 2009 21:50:09 UTC

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