W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > October 2001

RE: NP completeness & rdf entailment, graph identity, MT etc.

From: Pat Hayes <phayes@ai.uwf.edu>
Date: Mon, 8 Oct 2001 16:07:14 -0500
Message-Id: <p0510100fb7e7c58e6c0c@[]>
To: "Jeremy Carroll" <jjc@hplb.hpl.hp.com>
Cc: w3c-rdfcore-wg@w3.org
>>  Oh dear, I sure hope my RDF parser doesn't start returning
>>  _that_ any time soon. We've built something of a layered
>>  architecture in RDF, and I want to keep it that way. I see no
>>  reason an RDF parser should have to believe in the RDF Model
>>  Theory. Instead, it should just spit out triples for a
>>  higher-level application to deal with. It should definitely not
>>  be allowed to start adding or deleting triples (unless
>>  specifically asked to by the application.
>I find this paragraph more convincing now than I did last week.
>It suggests that rather than the conventional concrete versus abstract
>syntax distinction, we have a rather richer set of layers:
>    Semantics:                  Model Theory
>    Second Level Abstraction:   Graph
>    First Level Abstraction:    Triples (Multiset)
>    Concrete Syntax:            RDF/XML & N-Triple
>I guess last week I was assuming that the first level abstraction was not

Model theory not useful!??! Humph!!

Good job I'm a reasonable man, Jeremy.


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Received on Monday, 8 October 2001 17:07:19 UTC

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