W3C home > Mailing lists > Public > www-webont-wg@w3.org > May 2003

Re: owl:sameAs confusion (Ref and Guide)

From: Guus Schreiber <schreiber@cs.vu.nl>
Date: Wed, 28 May 2003 13:17:09 +0200
Message-ID: <3ED49AB5.2020206@cs.vu.nl>
To: Jeremy Carroll <jjc@hplb.hpl.hp.com>
CC: www-webont-wg@w3.org, ijd@hplb.hpl.hp.com

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/
Received on Wednesday, 28 May 2003 13:28:44 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:58:00 GMT