Re: How do you deprecate URIs? Re: OWL-DL and linked data

I haven't been following the "deprecate URIs" thread, so forgive me if I'm 
being repetitious.
1. everything is contextual.  But that's no excuse for being sloppy with 
meanings.
2. ambiguity is not inevitable -- it is avoided by clearly identifying 
context.
2. OWL:SameAs (like mKR:is) means identical -- two names (aliases) which 
mean the same thing.  Let's not corrupt the meaning of this term.
3. there are other terms which can be used to express varying degrees of 
similarity.

Dick
----- Original Message ----- 
From: "Booth, David (HP Software - Boston)" <dbooth@hp.com>
To: <martin.hepp@uibk.ac.at>; "Giovanni Tummarello" 
<giovanni.tummarello@deri.org>
Cc: "Jonathan Rees" <jar@creativecommons.org>; "Bernard Vatant" 
<bernard.vatant@mondeca.com>; "semantic-web at W3C" <semantic-web@w3c.org>; 
"Earle Martin" <earle@downlode.org>
Sent: Monday, July 07, 2008 8:31 AM
Subject: RE: How do you deprecate URIs? Re: OWL-DL and linked data


>
> Regarding use of owl:sameAs . . .
>
>> From: Martin Hepp
>> [ . . . ]
>> 3. For practical impact, we must (and do so every day outside
>> the SW box) adopt stronger statements of equivalence, such:
>> that may not hold universally, but are appropriate for our
>> context of usage and purpose. So we assume things to be more
>> similar than they actually are (btw, this is the core
>> principle of classification).
>
> +1
>
> To quote from slides 15-18 of
> http://dbooth.org/2008/irsw/slides.ppt
> (or PDF: http://dbooth.org/2008/irsw/slides.pdf )
> [[
>  owl:sameAs
>        * Creates value
>          - Permits data to be merged.  Good!
>        * Also creates problems when combining data
>        * Contradiction does not mean that the data is wrong!
>          - Models may be okay for one context, but inadequate for another
>          - E.g., modeling the earth as flat is good enough for driving 
> directions
>        * This problem will never go away!
>          - Avoid it when possible
>          - But be prepared when it happens
>  . . .
>        * Ambiguity is undesirable but unavoidable
>          - An identity that was good enough for one app may be
>            insufficiently precise for another
>                * Pat Hayes the physical body?
>                * At what point in time?
>                * Pat Hayes the legal entity?
>        * Uses of owl:sameAs would be vanishingly few if limited to
>          cases of identical URI definitions
>        * owl:sameAs can be viewed as an expression of belief: for
>          this app/context, these two URIs denote the same resource.
> ]]
>
>
> David Booth, Ph.D.
> HP Software
> +1 617 629 8881 office  |  dbooth@hp.com
> http://www.hp.com/go/software
>
> Statements made herein represent the views of the author and do not 
> necessarily represent the official views of HP unless explicitly so 
> stated.
>
>
>
>
>
Dick McCullough
http://mKRmKE.org/
Ayn Rand do speak od mKR done;
knowledge := man do identify od existent done;
knowledge haspart proposition list;
mKE do enhance od "Real Intelligence" done;

Received on Monday, 7 July 2008 22:39:18 UTC