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Re: owl semantics

From: Matthew Pocock <matthew.pocock@ncl.ac.uk>
Date: Tue, 24 Jul 2007 20:44:53 +0100
To: public-owl-dev@w3.org
Message-Id: <200707242044.53162.matthew.pocock@ncl.ac.uk>

Thanks to all who answered my question. The answer was that the vocabulary is 
the complete set of things that can possibly be said, not the things that are 
used in a particular ontology. So, deltaD contains all data values possible, 
and deltaI contains all individuals possible, and so on.

There was no consensus about what the sub-set of the vocabulary used by a 
particular ontology is called e.g. the named classes that a particular 
ontology uses, or all property expressions in the ontology.

Perhaps the spec could include a sentence making this clear, for those of us 
who don't come to the document already steeped in DL lore?

My next question/observation is that the interpretation table 3 mentions both 
named things (e.g. OWL:Thing) and un-named things (e.g. description 
expressions) as having interpretations. The word 'class' here (as in 'class 
interpretation function') seems to be a different use of the word to the rest 
of the spec documents, where 'description' would be the right name. 
Similarly, the object property interpretation function seems to be over 
object property expressions rather than what the rest of the spec calls 
object properties.

My inner pedant finds this unfortunate.

Matthew
Received on Tuesday, 24 July 2007 19:45:32 UTC

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