From: Jim Hendler (jhendler@darpa.mil)
Date: 01/15/01
At 9:55 -0500 1/12/01, Peter F. Patel-Schneider wrote: >[I expect that I will also send this out to rdf-logic (possibly modified), >but I wanted to send it to the committee now, and I can't send it to >rdf-logic until DAML+OIL is released. peter] Folks- language is announced - go for it! > >OK, now that there is a DAML+OIL release, it is time to try to put a >spanner in the works. (Not that it is time to sabotage the release, it is >just that it is now time to see what problems remain, so that the next >release can fix them.) I expect that this list is not complete! > > >Problem 1: The lack of a theory of identity (or equality, or equivalence) > I agree with Peter that this is important, and that we need it. However, I wonder if the correct solution isn't a langauge feature to allow it to be said -- we have the ability to say things are the same class or same property -- why not a similar explicit construct for same entity? I wanted to ask this here, rather than on rdf-logic, because it is likely I am missing something, and figured I'd rather get beaten up in private, rather than in public thanks JH Prof. James Hendler Program Manager DARPA/ISO 703-696-2238 (phone) 3701 N. Fairfax Dr. 703-696-2201 (Fax) Arlington, VA 22203 jhendler@darpa.mil
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