W3C home > Mailing lists > Public > www-rdf-interest@w3.org > December 2000

Re: Putting context in RDF serialization

From: Sean B. Palmer <sean@mysterylights.com>
Date: Wed, 20 Dec 2000 16:40:24 -0000
Message-ID: <01aa01c06aa3$ae043a20$a3d993c3@z5n9x1>
To: "Seth Russell" <seth@robustai.net>
Cc: "RDF-IG" <www-rdf-interest@w3.org>
> > Also, if (or rathr, "as") the context URI's are RDF Schema, could we
use
> > classes/properties of the Schema (i.e. further pointing out the
context),
> > and if so how?
>
> I think I would prefer doing it outside the schema as illustrated above.
> What do you think?

Good idea. In the context Schema, we could define further context models
for whatever assertions we have. For example, in your model:-

[contextUri3]--subContextOf-->[contextUri1]
[contextUri3]--subContextOf-->[contextUri2]
[contextUri3]--contextFor-->[id1,http:..../Lassila, Creator, "Ora Lassila"]

This is a Schema itself, but one that points "backwards" from the actual
context Schemas. As such, contextUri3 could itself be the context of
another context Schema:-

[contextUri4]--subContextOf-->[contextUri3]

In that case would it automatically import the "contextFor" triple that is
included in contextUri3 for the purposes of the RDF code you made? In other
words, would this example have the same context as yours(?):-

<?xml version="1.0"?>
  <RDF
    xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:s="http://description.org/schema/"
    contextFor="contextUri4"
   >
    <Description about="http://www.w3.org/Home/Lassila">
      <s:Creator>Ora Lassila</s:Creator>
    </Description>
  </RDF>

If so, then it's lucky you use contextFor in the literal sense rather than
just pointing out a node!
In summary, if these are your proposals, then I think that they are very
useful indeed and should probably be added as RDF serialization properties.

Kindest Regards,
Sean B. Palmer
http://www.mysterylights.com/sbp/
http://www.w3.org/WAI/ [ERT/GL/PF]
"Perhaps, but let's not get bogged down in semantics."
   - Homer J. Simpson, BABF07.
Received on Wednesday, 20 December 2000 11:41:51 GMT

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