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Re: Chainsaw?

From: Tom Van Eetvelde <tom.van_eetvelde@alcatel.be>
Date: Wed, 08 Nov 2000 12:23:17 +0100
Message-ID: <3A0937A5.18AA02F3@alcatel.be>
To: Graham Klyne <GK@Dial.pipex.com>
CC: Jonathan Borden <jborden@mediaone.net>, RDF interest group <www-rdf-interest@w3.org>

Does this mean the problem can be solved with statements and rules?


My statement:    Fordescort is defined by FORDCompany.
My rule:             if x is a FordEscort, x has a color and it is red.

The rules define the context of FordEscort. The statements give extra info on the concept 'context
of FordEscort'.

This goes into the direction of Prolog. Maybe one should ask oneself: is my modeling problem
inherent to the problemdomain or am I using the wrong modelling tool? I guess if it is the latter,
you can learn from the other modelling tool how to do things in your currently used modelling tool.



Graham Klyne wrote:

> Jonathan,
> I for one don't know the answer to your question, but I'm trying to pursue
> some ideas.  In considering and responding to Sergey's comments, I come to
> think we're looking at different facets of the same problem:  I'm focused
> on expressivity (with partial information), you're focused on inference, I
> think.  In the end, I expect we'll find a solution that adequately captures
> both, and hence answers your question.
> #g
> --
> At 01:22 PM 11/2/00 -0500, Jonathan Borden wrote:
> > > My interpretation of the second statement is that it says the *bag*
> > > containing the statements that define a [FordEscort] is defined by
> > > [FordMotorCompany].  My goal is to make that assertion about the (reified)
> > > statements themselves.  (Consider, there may be another bag defined by
> > > another party containing some of the same statements.)  The nearest thing
> > > in the RDF spec is <Description 'aboutEach=...'>, but I find that lacks a
> > > corresponding representation in the RDF abstract model.
> >
> >     And this is the problem. As much as it is good to keep the model as
> >simple as is possible, the model needs to model the --isa--> chain properly.
> >Part of this is the 'inheritance' of property values in a fashion similar to
> >the way an object instance might 'inherit' const values defined as members
> >of the class. Usually these const values can be static or class members. So
> >the question is, how is this best modelled in RDF?
> >
> >Jonathan Borden
> >The Open Healthcare Group
> >http://www.openhealth.org
> ------------
> Graham Klyne

Received on Wednesday, 8 November 2000 06:26:00 UTC

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