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Re: exchanging OWL through RIF

From: Michael Kifer <kifer@cs.sunysb.edu>
Date: Fri, 03 Mar 2006 14:44:32 -0500
To: bparsia@isr.umd.edu
Cc: RIF WG <public-rif-wg@w3.org>
Message-ID: <6228.1141415072@kiferdesk>

> [snip]
> >2. There are no FOL rule engines as far as I know. They currently exist on
> >   paper only. It is not at all certain that there will be. So, what is your
> >   target user group?
> >
> >	--michael  
> Does Hoolet count? (For swrl):
>      http://owl.man.ac.uk/hoolet/
> We are currently working on extending Pellet to handle DL Safe rules and then 
> SWRL. It will be a "native" SWRL engine and respect the FOL semantics. Various 
> sorts of optimizations are planned.
> Cheers,
> Bijan.

My statement should be understood in the context of Ed's use case.
He conjectured that there might be an FOL rule engine that *doesn't
understand OWL* and therefore a translation is needed. SWRL
is not such an FOL reasoner, because it builds directly on OWL.
OWL doesn't need to be encoded in order to be used by SWRL. It is the need
for this encoding that I claimed to be questionable.

Now, the charter talks about FOL rule languages and there will be a need to
devise a RIF encoding for something like SWRL. But I doubt that it will
look like a translation into FOL (one that extends the usual translation
from DL to FOL).

Received on Friday, 3 March 2006 19:54:46 UTC

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