Hello Kingsley, (01)
I think doug really has a point here. Imagine how simple the conversion of a
RDB to RDF would be if we had n-ary relations. Of course the usefulness
of such an 1:1 conversion is doubtful but the entry threshold would be lower. (02)
Am I right that you are OK with quick and simple conversions to RDF where the
real value is added via mappings later ? Some of your data integration tools
probably work this way. (03)
I have wondered about the restriction to triples publicly several times and
never got an answer about the reasons for it. Was it for simplicity of
implementation ? Do we really know that n-tuples would be a pain ? (04)
Regards, (05)
Michael Brunnbauer (06)
On Wed, Sep 05, 2012 at 07:22:56AM -0400, Kingsley Idehen wrote:
> On 9/5/12 12:02 AM, doug foxvog wrote:
> >On Tue, September 4, 2012 17:02, Kingsley Idehen wrote:
> >>On 9/4/12 3:41 PM, doug foxvog wrote:
> >>>On Tue, September 4, 2012 12:34, Kingsley Idehen wrote:
> >...
> >
> >>>>I believe Data denotes Subject Observation.
> >>>>I believe all observations are comprised of:
> >>>>1. a subject
> >>>>2. subject attributes
> >>>>3. subject attribute values.
> >...
> >>>One common type of observation is that A is between B and C.
> >>>How would you express this with a single triple? 8)#
> >>I would state that A is between B. A is Between C. Then I would define
> >>the semantics of the 'Between' predicate .
> >!??
> >Let's explore this:
> > (and
> > (between 10 5 11)
> > (between 10 4 11)
> > (between 10 6 11)
> > (between 10 7 11))
> >Using the KI translator this becomes:
> > AND
> > 10 is between 5
> > 10 is between 11
> > 10 is between 4
> > 10 is between 11
> > 10 is between 6
> > 10 is between 11
> > 10 is between 7
> > 10 is between 11.
> >
> >What semantics does the between predicate have?
>
> And that isn't what I was conveying to you. Basically, at what point did
> you indicate we where dealing with typed literals? You said A between B
> and B between C. Why on earth should I assume A, B, and C are typed
> literals? Just because you used the literal 'Between' in some kind of
> fuzzy context?
>
> RDF is pretty clear about the semantics for typed literals.
> >
> >How about the quaternary predicate, isBetweenOnPath?
> >Can you express the following with triples:
> >
> >(and
> > (isBetweenOnPath WashingtonDC Maryland Virginia I95)
> > (not (isBetweenOnPath WashingtonDC Maryland Virginia I495)))
>
> I think we are now talking past ourselves.
>
> If you have some alternative to RDF that works, just point me to it. I
> think that's the best use of our respective time at this juncture.
>
> Kingsley
> >
> >
> >-- doug foxvog
> >...
> >>Kingsley
> >>>-- doug foxvog
> >
> >
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> >
>
>
> --
>
> Regards,
>
> Kingsley Idehen
> Founder & CEO
> OpenLink Software
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>
>
>
> (07)
>
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