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[protege-owl] Define some interval subclass

Nagy Attila nagy.attila.1984 at gmail.com
Sat Apr 28 01:51:06 PDT 2007


If you manage to find a solution, please tell us about it. As I said
before, I have a quite similar problem. Thanks.

Cheers,

Attis

2007/4/27, Steve Jonathan Tirtha <sjtirtha at gmail.com>:
> Ok,
>
> thanks for the advices. I'll try those approaches.
> I'm thinking also to use new datatype defined in xsd, but only pellet
> supports datatype reasoning.
> But I'll try first, than I'll ask again.
>
> steve
>
>
> On 4/27/07, Thomas Russ <tar at isi.edu> wrote:
> >
> > On Apr 27, 2007, at 4:25 AM, Steve Jonathan Tirtha wrote:
> >
> > > Hi,
> > >
> > > How can I define subclass that represents interval of its superclass.
> > > Example:
> > > I have a class "Weight" and I divide it into some subclasses:
> > > WeightUnder10Kg, WeightBetween10And30Kg, WeightOver30Kg.
> > > I can define them only as a name. But how can define that the class
> > > WeightUnder10Kg can only have weight under 10 kg.
> >
> > As pointed out by others, this is not something that you can express
> > using OWL.
> >
> > Some restrictions like this can be expressed either by creating your
> > own XSD datatypes.  Or else you need to look to additional languages
> > like SWRL, which can do some things like this.
> >
> > Or you find a modeling language more expressive than OWL.
> >
> > > NB: is there any best practice for ontology modelling. I've read
> > > already Ontology 101. That was pretty good, but it's still not enough.
> >
> > There isn't really any complete consensus on modeling practices.
> >
> > There are some hints in the OWL tests that you can run from Protege.
> >
> > There has also been methodological work on ontologies in general
> > (rather than OWL-specific), from U. Amsterdam (CommonKADS) and from
> > some theoretical work (Chris Welty and Nicola Guarino -- OntoClean)
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