Yes, I am agreeing with Irene that the way to do this is import foaf.
An alternative is to create a model with just the URIs and triples
that foaf has. For example, {<http://xmlns.com/foaf/0.1/Person>
rdfs:subClassOf <http://xmlns.com/foaf/0.1/Agent> . <http://xmlns.com/
foaf/0.1/knows> rdf:type owl:ObjectProperty ...} etc. Really all that
is needed is to use the URIs that foaf uses and you will be ensured
that other models using the foaf model can be easily merged with your
model.
In term of servers, it is the case that TopBraid Live is a separate
product with competitive costs - contact [email protected] for
more :). In the end it's a buy vs. build decision. My experience
varies, but in hindsight it usually costs more to build. The services
we provide, as a company, are to keep updated with standards, etc.,
while having people on the other end that are the best in the business
on these technologies, will answer questions quickly, and generally
support your development efforts. And, yes, our main focus is at the
organizational level where this level of support is often not
optional.
In the meantime, a nice feature of the TopBraid Suite is that you and
try it out using TBC-ME (localhost server aka Personal Server) to run
a PoC, determine whether the product does what you need, etc. Then
you know how it works before purchasing the server-class TBL software.
-- Scott
On Nov 2, 4:21 pm, Bruce Whealton <[email protected]> wrote:
> Scott, so you are saying like Irene, to have my ontology import foaf?
>
> I do like the Top Braid products. Ensemble requires a special server
> doesn't it? The costs for both the product and the server are hard
> for smaller businesses. Someday, though, I'd like to use these
> products. It might be good to offer a product that one can purchase
> and not also have to pay an ongoing fee. Purchasing software is a
> major expense for the web developer and when you add a monthly fee,
> that makes it even more difficult. Perhaps TB is targeting
> Organizations and such.
> Bruce
>
> On Nov 2, 10:15 am, Scott Henninger <[email protected]>
> wrote:
>
> > Bruce; As Irene states, the best practice is to create an ontology and
> > use owl:imports to import the foaf model. Then the application uses
> > your ontology, which contain foaf and your ontology, provided the
> > application can properly apply owl:imports.
>
> > Just as a side-note, Ensemble is a collaborative Web-based interface
> > that is basically a Wiki out-of-the-box. The interface can be
> > customized to provide features as desired.
>
> > -- Scott
>
> > On Nov 1, 6:25 pm, "Irene Polikoff" <[email protected]> wrote:
>
> > > Bruce,
>
> > > If your application was running on TopBraid Live server, you would need to
> > > create myfoaf ontology, import foaf into it using owl:import statement and
> > > then define the two extra properties in myfoaf. The TopBraid
> > > infrastructure
> > > would take care of getting foaf and (virtually) merging it with myfoaf to
> > > derive the full model.
>
> > > I can't speak for how Drupal or Semantic Media Wiki work and what issues
> > > they would (or not) have in this scenario. Of course, if the import
> > > approach
> > > did not work and you decided to duplicate all of foaf in myfoaf, there
> > > would
> > > be no reason for you to also include foaf.
>
> > > Regards,
>
> > > Irene
>
> > > -----Original Message-----
> > > From: [email protected]
>
> > > [mailto:[email protected]] On Behalf Of Bruce Whealton
> > > Sent: Tuesday, November 01, 2011 7:03 PM
> > > To: TopBraid Suite Users
> > > Subject: [topbraid-users] Question: re expanding an existing ontology
>
> > > Hello,
> > > I was wondering what the best practice is for working with
> > > custom vocabularies that one extends from existing vocabularies. For
> > > example, suppose one starts with FOAF and then decides 2 new terms are
> > > needed for an application. This would give,
> > > myfoaf.
> > > I am guessing I would publish myfoaf on my own domain. Ok,
> > > is there a way to say, import foaf from where it is defined/specified
> > > and then add these properties?
> > > My applications will use Drupal and MediaWiki with the
> > > Semantic MediaWiki extensions. Has anyone used these? I assume there
> > > would be a problem if I refer to a property that is not part of the
> > > foaf specification.. Both of these have ways for importing
> > > vocabularies. Much duplication can happen if one's extended foaf
> > > ontology had just two new fields and one was importing into the
> > > software both foaf and myfoaf, and my foaf had all of foaf plus 2 new
> > > terms.
> > > Sorry, I'm not sure why I am getting hung up on this.
> > > Bruce
>
> > > --
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> > > Composer,
> > > TopBraid Live, TopBraid Ensemble, SPARQLMotion and SPIN.
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