[Pellet-users] RDF to DIG 1.1 standalone converter

[Michael Smith]

On Fri, 2008-07-11 at 15:33 +0100, Alexander Nazarov wrote:

> Yes, I'm aware that DIG 1.1 is less expressive than OWL DL, I just hope that
> my ontologies would be quite simple.
> 
> Yes, the problem is a platform - I was told by my boss that Java is
> disfavored in our development. Our domain is NLP and consequently we are in
> Perl.
> 
> Could you tell me please: what is it, a bridge from Perl to Java?

A quick Google found two relevant perl extensions
+ http://search.cpan.org/~metzzo/Java-4.7/Java.pm
+ http://search.cpan.org/~rusekd/Java-Import-0.03/lib/Java/Import.pm

I have no experience with either and don't know if they can be used
successfully with Pellet.

> About converter to DIG 1.1 - I found one called OWL2DIG:
> http://projects.semwebcentral.org/projects/owl2dig/

That looks promising, if dormant.

> It looks like working OK. The only strange thing I notice:
> Every class definition from OWL was converted to <equalc> axiom, i.e. for
> class 'Thing':
>     <equalc>
>         <catom name="http://www.w3.org/2002/07/owl#Thing"/>
>         <catom name="http://www.w3.org/2002/07/owl#Thing"/>
>     </equalc>
> 
> Could you tell me please, is it the same as <defconcept> introduction?

I think it will have the same effect for Pellet via DIG.

> I actually subscribed to DIG forum mailing list:
> dig-users at lists.sourceforge.net
> but it looks dead.

You might try [1], it has more recent activity.

-- 
Mike Smith

Clark & Parsia

[1] http://listserv.manchester.ac.uk/cgi-bin/wa?A0=DIG-WG