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Re: owl:sameAs confusion (Ref and Guide)

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Thu, 29 May 2003 15:37:10 -0400 (EDT)
Message-Id: <20030529.153710.07310752.pfps@research.bell-labs.com>
To: hendler@cs.umd.edu
Cc: schreiber@swi.psy.uva.nl, jjc@hplb.hpl.hp.com, www-webont-wg@w3.org

I don't see anything in what Guus quotes to indicate that there has been a
decision on whether owl:sameAs is in OWL DL.

peter


From: Jim Hendler <hendler@cs.umd.edu>
Subject: Re: owl:sameAs confusion (Ref and Guide)
Date: Thu, 29 May 2003 15:32:15 -0400

> 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 15:37:27 GMT

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