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Possibly wrong use of RL-theorem in the Conformance spec

From: Michael Schneider <schneid@fzi.de>
Date: Fri, 3 Jul 2009 21:29:20 +0200
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A0014C65B0@judith.fzi.de>
To: "W3C OWL Working Group" <public-owl-wg@w3.org>
Hi!

In Section 2.3.1 of the Conformance spec, appended to the definition of an "OWL 2 RL entailment checker", there is the following note:

[[
Note that it follows from Theorem PR1 of Profiles [OWL 2 Profiles] 
that it is always safe for an OWL 2 RL entailment checker 
using the RDF-Based Semantics 
to return False if:
... several conditions ...
]]

But the actual theorem PR1 does only make a assertion about the relationship between the RL ruleset and the *Direct Semantics*. Nothing is said about the RDF-Based Semantics by that theorem.

So I believe that in the above note, the term "RDF-Based Semantics" has to be replaced by the term "Direct Semantics".

Michael

--
Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
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Received on Friday, 3 July 2009 19:30:04 GMT

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