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Re: owl:sameAs confusion (Ref and Guide)

From: Jim Hendler <hendler@cs.umd.edu>
Date: Thu, 29 May 2003 15:32:15 -0400
Message-Id: <p05200f37bafc0fe7fa87@[10.0.1.2]>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>, schreiber@swi.psy.uva.nl
Cc: jjc@hplb.hpl.hp.com, www-webont-wg@w3.org

At 1:24 PM -0400 5/29/03, Peter F. Patel-Schneider wrote:
>I am not convinced that there has been a decision on whether owl:sameAs is
>in OWL DL.
>
>peter


Peter, I would hope that your disagreement with the chair on this 
issue was backed up with something -- Guus seems to have quoted 
appropriate sources and to have stated that he is not revisiting the 
decision.  I don't see anything saying he is suggesting this as a 
personal prefence, so it appears that it was sent in his chair's 
role.  Short of showing he's wrong, "I'm not convinced" doesn't seem 
to me to overrule such a decision...
  -JH
  the "other" chair.

>
>
>From: Guus Schreiber <schreiber@swi.psy.uva.nl>
>Subject: Re: owl:sameAs confusion (Ref and Guide)
>Date: Wed, 28 May 2003 14:17:52 +0200
>
>>
>>  [reposted from my old address, for some reason my first reply did not
>>  make it to the list]
>>
>>  Jeremy Carroll wrote:
>>   >
>>   >
>>   > The HP team report that we have had difficulty working on owl:sameAs
>>   > because different team members are working from different documents.
>>   >
>>   > S&AS excludes owl:sameAs from OWL DL and OWL Lite.
>>
>>
>>  This looks to me like a bug. The final resolution on Issue 4.6
>>  (EquivalentTo)
>>
>>     http://www.w3.org/2001/sw/WebOnt/webont-issues.html#I4.6-EquivalentTo
>>
>>  states clearly that sameAs is a synonym for sameIndividualAs and says
>>  nothing about it only being in Full. The minutes of the relevant telecon
>>  (Nov 11) contain a suggested methodological guideline that sameAs may
>>  typically be used in Full when the types of the subject/object are
>>  unknown, but that's something different.
>>
>>   > Guide recommends not using owl:sameAs (ever), but states that it is
>>   > synonymous with owl:sameIndividualAs, and suggests that using
>>   > owl:sameAs between classes is in full.
>>   > Ref is more positive about owl:sameAs.
>>   >
>>   > It would be helpful if the story were clearer, in particular Ref and
>>   > Guide should say that all uses of owl:sameAs are in Full
>>
>>  Not true, see above.
>>
>>   > (personally, I would not mind simply dropping owl:sameAs).
>>
>>  The introduction of the synonym was part of a WG compromise (some
>>  preferred sameAs instead of sameIndividualAs). I see no reason to
>>  revisit this decision.
>>
>>  I propose the S&AS, Guide and Ref editors take actions to ensure their
>>  documents are consistent with the current resolution.
>>
>>  Guus
>>
>>   >
>>   > Jeremy
>>   >
>>   >
>>
>>  --
>>  Free University Amsterdam, Computer Science
>>  De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
>>  Tel: +31 20 444 7739/7718
>>  E-mail: schreiber@cs.vu.nl
>>  Home page: http://www.cs.vu.nl/~guus/
>>
>>

-- 
Professor James Hendler				  hendler@cs.umd.edu
Director, Semantic Web and Agent Technologies	  301-405-2696
Maryland Information and Network Dynamics Lab.	  301-405-6707 (Fax)
Univ of Maryland, College Park, MD 20742	  240-731-3822 (Cell)
http://www.cs.umd.edu/users/hendler
Received on Thursday, 29 May 2003 15:36:08 GMT

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