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Re: owl:sameAs confusion (Ref and Guide)

From: Jim Hendler <hendler@cs.umd.edu>
Date: Thu, 29 May 2003 15:54:28 -0400
Message-Id: <p05200f3bbafc1427f96c@[10.0.1.2]>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
Cc: schreiber@swi.psy.uva.nl, jjc@hplb.hpl.hp.com, www-webont-wg@w3.org

At 3:37 PM -0400 5/29/03, Peter F. Patel-Schneider wrote:
>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


WG decided that owl:sameAs is a synonym for owl:sameIndividualAs (issue 4.6)
owl:sameIndividualAs is in OWL Lite 
(http://www.w3.org/TR/owl-semantics/syntax.html#2.2)

I therefore read our record (based on a simple syllogism) as placing 
owl:sameAs in Lite.

Both chairs now agree that the WG did indeed decide owl:sameAs is in DL/Lite.

  Could one of the editors of S&AS please make the change, or offer 
new evidence that the chairs should reconsider the decision
  thanks
  JH



>
>
>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

-- 
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 15:58:21 GMT

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