[Pellet-users] Making implicit relationships explicit

[Evren Sirin]

On 7/23/08 9:11 PM, Bob DuCharme wrote:
> If foo is a symmetric property, and I declare that A foo B in my RDF/OWL 
> file, Pellet knows that B foo A. For software that doesn't know this 
> (e.g. Swoop), I'd like to create a version of the RDF/OWL file that adds 
> B foo A. I've looked through the various pellet command line switches 
> and didn't see anything, although a SPARQL query for all triples came 
> close--I just didn't know how to get that in RDF/OWL format.
>
> Any suggestions?
>   

Unfortunately there is no option that will do what you want. The closest 
that will output an RDF/XML file is using the options "-c RDF -cout 
<file> -r" that will put the classification and realization results into 
the file. The file will contain subClassOf, equivalentClass and type 
inferences but not the property assertions you want. It would be quite 
easy to do that in the code though (e.g. create a Jena model using 
Pellet and then simply call model.write).

FWIW, in the next version it will be possible to run CONSTRUCT queries 
from the command line so it will be possible to get the SPARQL results 
in RDF/XML format.

Cheers,
Evren


> thanks,
>
> Bob
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