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Re: Putting context in RDF serialization

From: Graham Klyne <GK@Dial.pipex.com>
Date: Mon, 01 Jan 2001 16:02:03 +0000
Message-Id: <>
To: Seth Russell <seth@robustai.net>
Cc: RDF-IG <www-rdf-interest@w3.org>

If the context can be expressed in the RDF graph-syntax (which I is the 
approach I have tried to follow) then I see no need to create extensions to 
the RDF serialization.


At 09:31 AM 12/15/00 -0800, Seth Russell wrote:
>Applications of the semantic web are going to be aggregating
>different sources of RDF.  Categorizing information (time,
>geography, trust, topic etc. ) will also be collected in the
>process of reading RDF statements. Our applications will
>need some method to easily express this type of information
>*in RDF*.   I suppose that there are methods to do this
>using bag containers, but they are cumbersome.  However, RDF
>has already defined the perfect container  for our purpose
>... the RDF element itself.   So I propose the following
>extension to RDF XML serialization for contexts (graphs,
>models, microtheoroies, sources, settings, frameworks,
>situations .......):
><?xml version="1.0"?>
>   <RDF
>     xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>     xmlns:s="http://description.org/schema/"
>     context="contextUri1"
>     context="contextUri2"
>    >
>     <Description about="http://www.w3.org/Home/Lassila">
>       <s:Creator>Ora Lassila</s:Creator>
>     </Description>
>   </RDF>
>This would generate the following triples:
>[contextUri1] ---context--->[id1,
>http://www.w3.org/Home/Lassila , s:Creator, "Ora Lassila"]
>[contextUri2] ---context--->[id1,
>http://www.w3.org/Home/Lassila , s:Creator, "Ora Lassila"]
>Where [id1, http://www.w3.org/Home/Lassila , s:Creator, "Ora
>Lassila"] is just a shorthand notation for the reification
>[ id1, rdf:type, statement]
>[ id1, rdf:subject, http://www.w3.org/Home/Lassila]
>[ id1, rdf:predicate, s:Creator]
>[ id1, rdf:object, "Ora Lassila"]
>Seth Russell

Graham Klyne
Received on Monday, 1 January 2001 14:00:48 UTC

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