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[protege-owl] Query: Subclasses or Sibling

Timothy Redmond tredmond at stanford.edu
Wed Apr 4 07:37:17 PDT 2007


> I do think that closed-world reasoning tends to be more of an issue  
> when
> dealing with instances than with concept subsumption, since I don't
> think
> there are any class subsumption inferences that require knowing  
> that the
> current set of fillers is the complete set.  That seems to me to be  
> more
> of an instance-level concern.

At first blush this sounds right.  So if you are reasoning about  
instances it is more likely that you actually want to have a closed  
world assumption (as is desired with many queries).

-Timothy




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