- From: Stasinos Konstantopoulos <konstant@iit.demokritos.gr>
- Date: Wed, 10 Dec 2008 23:03:51 +0200
- To: Jonathan Rees <jar@creativecommons.org>
- Cc: public-powderwg@w3.org, Alan Ruttenberg <alanruttenberg@gmail.com>, Michael Schneider <schneid@fzi.de>
On Dec 1, 2008, at 3:44 AM, Jonathan Rees wrote: > A test of the correctness and tractability of the extension would be > agreement from one of the groups providing DL reasoners to implement > it. Has this been pursued? OWL or RDFS reasoners do not need to be modified or extended, unless they choose to implement POWDER-specific optimizations. The extension is made at the underlying RDF layer, which is expected to make the wdrs:matchesregex triples available to the reasoner to act upon, just in the same way that it makes other triples available to them. You can find a proof-of-concept implementation at http://transonto.sourceforge.net/ which implements a the extension in the form of a "middle man" between perfectly vanilla versions of Jena and Pellet. A POWDER processor is then simply a method describe(u) which asks all the right SPARQL queries (using vanilla ARQ over the closure inferred by Pellet) and translates the QueryResults object into the form specified by the DR doc. s
Received on Wednesday, 10 December 2008 21:04:37 UTC