The Rredland package available through Bioconductor (www.bioconductor.org)
will parse and do limited
modeling of RDF; some OWL examples are in the vignette.  Some years ago a
package called Rswub
included an interface to Jena, but became stale.  Developments in R-java
interfaces since then might make an
effect R-Jena interface relatively easy to create and maintain.

It has been noted that Rredland's dependence on Berkeley db is a potential
nuisance for installation; since
Rredland was released, a SQLite back end has been introduced for
redland/librdf but I have not had the
opportunity to add code to capitalize on this.  Patches welcome.

On Thu, Jun 10, 2010 at 3:45 PM, Stavros Macrakis <macrakis@alum.mit.edu>wrote:

> Are there any R packages to import and use Web Ontology Language (OWL)
> ontologies (represented in OWL/RDF or other form)?
>
> Thanks,
>
>             -s
>
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>
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