On Montag, 2. November 2009, Safran, Tracy (NIH/NCI) [C] wrote:
> I have an OWL Ontology that I wish to publish to a SMW for purposes of
> collaboration. I am trying to represent the OWL as faithfully as possible.
> I also want to be able to pull edited information from the SMW into the
> Protégé OWL editor, and adhering to an OWL structure would make this
I see. In this case, it might be useful to consider the ontology as "data" in
the sense that SMW does not work based on the ontological axioms that you
enter (e.g. they would not affect query results) but that you can edit them
like any other wiki content. Some amount of mapping to OWL could still be
achieved directly in the SMW OWL/RDF export by using the "vocabulary import"
feature . Alternatively, you could also have some transformation script
that extracts the ontology from the SMW export.
This does not give you a very tight integration with tools like Protege, of
course, and especially it does not yield any way to import/update the ontology
into the wiki when it has been edited elsewhere.
> Tracy M. Safran
> Contractor - SAIC Frederick
> EVS support
> -----Original Message-----
> From: Markus Krötzsch [mailto:markus.kroetzsch@...]
> Sent: Sunday, November 01, 2009 3:58 PM
> To: semediawiki-devel@...
> Cc: Yaron Koren; Safran, Tracy (NIH/NCI) [C]
> Subject: Re: [SMW-devel] property restrictions
> On Sonntag, 1. November 2009, Yaron Koren wrote:
> > You can't create "existential restrictions"  in SMW. You can have
> > some universal restrictions - namely, restricting the type of a
> > property, and restricting the set of values it can hold.
> I think I generally agree, although the effect of type information in SMW
> is not /exactly/ the same as the effect of universal property restrictions
> in OWL (I suppose that this is the semantic language to which the request
> refers, see  for an introduction). In particular, types in SMW mainly
> affect how user inputs are interpreted to obtain semantic data, while OWL
> property restrictions are evaluated together with the given semantic data
> to derive new conclusions. This is also why the OWL/RDF export of SMW does
> not include property types as universal OWL restrictions (allValuesFrom).
> Existential property restrictions as used in OWL express that there is some
> (unknown) value for a property. This kind of information is useful for
> deriving class subsumptions, especially in the absence of concrete
> instances/values. I do not quite see which feature of SMW could be enhanced
> by taking such information into account.
> What do you need the property restrictions for?
> -- Markus
>  http://www.w3.org/TR/owl2-primer/
> > On Fri, Oct 30, 2009 at 12:12 PM, Safran, Tracy (NIH/NCI) [C] <
> > safrant@...> wrote:
> > > Is there a way to create property restrictions in Semantic
> > > Mediawiki? The ones I need to use are the universal (all) and
> > > existential (some) restrictions.
> > >
> > > Thanks,
> > >
> > > Tracy M. Safran
> > > Contractor - SAIC Frederick
> > > EVS support
> > > 301-402-1537
> > >
> > >
> > >
> > >
> > >
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> Markus Krötzsch
> Karlsruhe Institute of Technology (KIT), Institute AIFB Englerstraße 11
> (Geb. 11.40), 76131 Karlsruhe, Germany
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> KIT - Universität des Landes Baden-Württemberg und nationales
> Großforschungszentrum in der Helmholtz-Gemeinschaft
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