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Re: RIF and QL

From: Enrico Franconi <franconi@inf.unibz.it>
Date: Fri, 27 Jan 2006 14:25:19 +0100
Message-Id: <CAD435F7-CDD3-4753-BE5D-8E29AA6ADA03@inf.unibz.it>
Cc: W3C RIF WG <public-rif-wg@w3.org>
To: Francois Bry <bry@ifi.lmu.de>

On 27 Jan 2006, at 14:12, Francois Bry wrote:
> It seems to me that you are missing that Enrico's point was not about
> finding a way to implement his example, but to cope with disjunctive
> information in general. Enrico's goal requires deduction methods  
> that go
> beyond what many rule languages offer.
> Many rule languages are based on construvctive logic, or if you  
> like it
> better, simple modus ponens (with forward or backeward chaining). For
> coping with disjunctive information, one needs refutation, or  
> techniques
> like anscestor resultion amounting to refutation.
> My understanding, is that Enrico's example is about the power of the
> deduction methods used in a rule engine. RIF might well give rise to
> express Enrico's example, copming along with a simple declarative
> semantics (or model theory), without making any commitment/assumptions
> about a procedural semantics.

I agree. This is a fair account of my feelings :-)

Received on Friday, 27 January 2006 13:25:53 UTC

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