RE: Inheritance and RIF

Hans --

You may like to look at a simple inheritance example that, I believe, 
cannot be done in OWL:

     http://www.reengineeringllc.com/demo_agents/TransitiveOver1.agent

Cheers,  -- Adrian



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At 09:49 PM 4/11/2006 +0200, you wrote:

>Peter and Frank,
>
>This forum seems to recover from the shock of the raid by the ONTACians.
>
>I suggest that we return to more mundain subjects, like inheritance:
>
>If inheritance is taken care of at all in OWL and/or OWL-related software,
>where then exactly is it being taken care of? Is it:
>- in the language, hidden in the S&AS?
>- in "standard" reasoners or other software?
>
>If it is defined in the S&AS or similar, I guess that in order to claim
>compliance one must adhere to that.
>
>Or is everybody on its own (which is fine with me)? (Yes Frank, we do use
>n-ary relations all over the place, so we can handle it. I haven't heard
>from Evan Wallace.)
>
>Regards,
>Hans
>
>-----Original Message-----
>From: Frank Manola [mailto:fmanola@acm.org]
>Sent: Monday, April 03, 2006 18:24
>To: Hans Teijgeler
>Cc: semantic-web@w3.org
>Subject: Re: Inheritance and RIF
>
>Hans Teijgeler wrote:
> > Peter,
> >
> > Thanks for your response!
> >
> > You wrote:
> >
> > <PFPS>
> > Well, RIF shouldn't have any mechanism for inheritance.   After all, RIF
>is
> > not about classes and instances, but is instead about rules.
> > </PFPS>
> >
> > I hope that those rules are about anything we know of, i.e. about
> > classes, individuals, and properties. What else can a rule be about?
> >
> > I still am in need for an answer to my question: does anyone know how
> > to represent a value with a tolerance in RDF/OWL? So something like:
> > diameter = 150 mm +0.03%  -0.25%.
>
>http://www.w3.org/TR/swbp-n-aryRelations/ discusses a use case for
>describing "Christine has breast tumor with high probability".  The same
>approach (basically, n-ary relations) could be used to describe values with
>upper and lower tolerances as well.  This may not be the way manufacturing
>folks would do it, but it's certainly possible.  NIST does a lot with
>manufacturing (and Evan Wallace is on the SW Best Practices group);  perhaps
>someone from there could comment on this.
>
>--Frank
>
> >
> > XML Schema doesn't have any datatype that can do that. I assume that
> > somewhere in SemWebland someone must have been dealing with tolerances
> > and accuracies. After all it is necessary when "making one of the
> > standard modelling choices", i.e. that of defining classes by means of
> > "criteria for membership". Are there other modelling choices?
> >
> > Kind regards,
> > Hans
> >
>
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Received on Wednesday, 12 April 2006 01:00:12 UTC