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RE: ISSUE-52 (Explanations): Specification of OWL equivalences and rewriting rules for explaining inferences

From: Kashyap, Vipul <VKASHYAP1@PARTNERS.ORG>
Date: Fri, 2 Nov 2007 17:22:00 -0400
Message-ID: <DBA3C02EAD0DC14BBB667C345EE2D124010F0697@PHSXMB20.partners.org>
To: "Bijan Parsia" <bparsia@cs.man.ac.uk>, "OWL Working Group WG" <public-owl-wg@w3.org>



> > I was wondering if the OWL 1.1 effort should also look at ways and
> > means of standardizing inference explanations, especially to make
> > them user understandable.
> 
> IMO, no.

Wondering if you think this is a scope or a relevance issue.

> > The current version of P4 has functionality that identifies the
> > relevant axioms involved in making an inference, but stops short of
> > explaining how the entailments/consequences of these axioms can be
> > chained together to create an explanation.
> 
> This is an active research topic. If you are coming to the face to
> face, I can show you some of that research.

Look forward to it. Unfortunately cannot make it to the F2F. Any chance you are
coming to the Tech Plenary?

> You might also look at Swoop which has more advanced presentation
> features. The implementation in P4 is preliminary (e.g., not
> including any presentational help). You might be surprised how far
> you can get without lemma generation.

Thanks for the pointer. Will download Swoop and check it out.

> Actually, this is pretty clearly false. What would be very useful is
> very useful. I'm willing to bet a lot that the above rewritings are
> not. 

Could you point to some paper/experiment that establishes the usefulness or lack
thereof of these rewritings?

> We already know (through actual user study, albeit indirectly)
> is that presentation is helpful. We have preliminary evidence that
> certain kinds of rewrite (e.g., swoop's "strike out" mode) can help a
> lot, and we are exploring others.

Yeah! More insights on this - papers etc. would be very useful.

> However, this is not appropriate for this group. Nor would it
> significantly speed access to users.

I am not sure I agree with the above. The ability to specify standardized
Explanations which to some extent depend on useful rewritings will play a big
role in the support model - i.e., the ability to debug and test OWL ontologies,
etc. The analogy is that every industry standard programming language today has
a well standardized error reporting and debugging mechanism.

Cheers,

---Vipul


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Received on Friday, 2 November 2007 21:22:19 GMT

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