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Re: Concrete and abstract domains disjointness

From: Pat Hayes <phayes@ihmc.us>
Date: Mon, 10 May 2004 13:06:41 -0500
Message-Id: <p06001f46bcc574b3ce9b@[10.0.100.76]>
To: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Cc: www-rdf-logic@w3.org

>Dimitrios A. Koutsomitropoulos wrote:
>>
>>Can somebody explain some formal reason why the concrete and abstract
>>domains (i.e. the datatype and individual sets) have to be disjoint in OWL
>>DL?
>
>I think in addition to the other postings, I would suggest 
>procedural reasons. Those who like this separation could point to 
>implementations (both real and theoretical algorithms) based on this 
>idea, and had the advantage that Daml+OIL has this separation. 
>Anyone wishing to challenge that really needed to point to working 
>systems, with academic creditionals, that was as credible. I don't 
>think this point was seriously challenged.
>Politically, those who were most likely to want to challenge this 
>separation were happy enough with OWL Full.
>
>The point of deliberately ignoring your request for *formal* 
>reasons, is that any such reasons will be the views of some (but not 
>all) of the WG. OWL was determined using a process, which was 
>(roughly) to take DAML+OIL and raise issues against it. IIRC this 
>issue was not (formally) raised, so the separation is in OWL because 
>it was in DAML+OIL (not for technical reasons)
>

Just to clarify, the reasons I suggested in my earlier email referred 
to the discussions during the design of DAML+OIL. As Jeremy points 
out, the result was never seriously debated in the process of 
designing OWL from DAML+OIL.

Pat

>Jeremy


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Received on Monday, 10 May 2004 14:06:59 GMT

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