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Re: making statements about a graph

From: Reto Bachmann-Gmuer <reto@gmuer.ch>
Date: Thu, 06 Nov 2003 13:35:48 +0100
Message-ID: <3FAA4024.6010801@gmuer.ch>
To: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
Cc: www-rdf-interest@w3.org

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<rdf:Description rdf:about="#u1">
~  <dc:language rdf:ID="r1">EN</dc:language>
</rdf:Description>

is the same graph as

<rdf:Statement rdf:ID="r1">
~   <rdf:subject rdf:resource="#ul" />
~   <rdf:predicate rf:resource="dc:languages" />
~   <rdf:object>EN</rdf:object>
</rdf:Statement>
<rdf:Description rdf:about="#u1" dc:language="EN"/>

do you think reification is messed up in RDF or just the way it is
serialized in RDF/XML?

reto

Steve Harris wrote:

| On Thu, Nov 06, 2003 at 11:27:40 +0100, Max Froumentin wrote:
|
|>Steve Harris <S.W.Harris@ecs.soton.ac.uk> wrote:
|>
|>
|>>The RDF provided mechaism for reification is pretty messed up IMHO.
|>
|>This reminds me that I never saw a clear statement explaining why it
|>was messed up. I want to use it for voice recognition, to express
|>confidence values for assertions:
|>
|><utterance id="u1">chat</utterance>
|>
|><rdf:RDF>
|>  <rdf:Resource rdf:nodeID="r1" rdf:about="#u1" dc:language="EN"/>
|>  <rdf:Resource rdf:nodeID="r2" rdf:about="#u1" dc:language="FR"/>
|>
|>  <rdf:Resource rdf:about="#r1" foo:confidence="65%"/>
|>  <rdf:Resource rdf:about="#r2" foo:confidence="35%"/>
|></rdf:RDF>
|
|
| I dont think thats reified (though I'm not that hot on RDF syntax), I
| think reified statements look something like:
|
|   <rdf:Statement>
|     <rdf:subject resource="#r1" />
|     <rdf:predicate resource="foo:confidence" />
|     <rdf:object>65%</rdf:object>
|   </rdf:Statement>
|
| representing one triple. But it doesnt entail the "obvious" triple.
|
| IIRC, your exmaples are b-nodes.
|
| - Steve
|
|

- --
Reto Bachmann-Gmuer
Tel: +41 79 586 18 76
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Received on Thursday, 6 November 2003 07:35:18 GMT

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