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Re: [SKOS] OWL DL compatibility

From: Dan Brickley <danbri@danbri.org>
Date: Wed, 21 Feb 2007 11:11:57 +0100
Message-ID: <45DC1AED.5090702@danbri.org>
To: SWD WG <public-swd-wg@w3.org>
Cc: SKOS <public-esw-thes@w3.org>

Antoine Isaac wrote:
> Hi Alistair,
> Very nice summary of these problems!


I'm still digesting the issue. But one immediate point: I am 
uncomfortable with excessive use of OWL's notion of "annotation 
properties". They're very much 2nd-class citizens in the OWL world. I'd 
rather define extra properties for class etc annotation, and restrict 
prefLabel, altLabel to  SKOS individuals.

SKOS is in a funny place here, since it bridges (conceptually if not yet 
technically) the ontological and the "thesaural" (ahem) styles for world 
modelling. I think it should be possible for SKOS instance data to be 
usable within a DL environment. And the SKOS vocabulary definitions 
should be OK in a DL environment too. But beyond that, I envisage SKOS 
being used in practice within idioms which blatently "cross the 
streamers" and tangle up instance data with class-level data. But I 
think we can make this an opt-in feature that doesn't upset the DL approach.

BTW re DL, it is worth keeping an eye on
http://owl1_1.cs.manchester.ac.uk/owl_specification.html#A and nearby, 
to get a sense for where the folk behind OWL DL's thinking is headed...


Received on Wednesday, 21 February 2007 10:12:13 UTC

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