W3C home > Mailing lists > Public > www-rdf-logic@w3.org > May 2001

RE: Predicates and Arcs vs Triples RE: use/mention and reification: rdf:predicate/subject/object

From: Jonathan Borden <jborden@mediaone.net>
Date: Mon, 28 May 2001 22:23:19 -0400
To: "Graham Klyne" <GK@NineByNine.org>
Cc: <www-rdf-logic@w3.org>
Message-ID: <001701c0e7e6$533fd340$0201a8c0@ne.mediaone.net>
Graham Klyne wrote:
>
>
> At 01:52 PM 5/27/01 -0400, Jonathan Borden wrote:
>
> [...]
> >You: contexts e.g. (p,s,o, context)
>
> Actually, not:  what I proposed (as a working format grounded in (p,s,o))
> was <p,s,o,id> where 'id' was an identifier for the statement,
> not a context.

still, quads.

>
> [...]
> >What we are calling "triples" are often not triples (of course
> they can be
> >decomposed into triples).
>
> I have always been clear in my own mind of a distinction between the
> unadorned labelled directed graph form (triples) and any other
> format that
> might prove more convenient to work with.
>

Again, there is a long history of representing DLGs using other than
triples. I personally used and cut my teeth on Grasper in the 1980s.
Undoubtedly there have been other DLG representation systems which don't
store arcs as structures with three elements (e.g. triples). At the very
least, the concept of a "space" or "context" is important enough to deserve
a "slot".

-Jonathan
Received on Monday, 28 May 2001 22:24:32 UTC

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