W3C home > Mailing lists > Public > public-lod@w3.org > November 2010

RE: What would break, a question for implementors? (was Re: Is 303 really necessary?)

From: Pete Johnston <Pete.Johnston@eduserv.org.uk>
Date: Tue, 9 Nov 2010 10:34:38 +0000
To: Ian Davis <me@iandavis.com>
CC: Linked Data community <public-lod@w3.org>
Message-ID: <59E2F1A55E23D64DB03813F9B680F9D9242DEFDF47@edu-vmw-eml-l01.edu2000.com>
Ian said:

> I used Denny Vrandečić's browser tool to test several Linked Data browsers
> including Tabulator.
> 
> http://browse.semanticweb.org/?uri=http%3A%2F%2Fiandavis.com%2F2010

> %2F303%2Ftoucan&days=7
> 
> Non of these showed any confusion between the toucan and its description,
> nor did that throw warnings or errors about the lack of
> 303 or in fact make any reference to it (tabulator includes the response as
> RDF but does not infer that the 200 response implies a type of information
> resource, which I had assumed it would)

Looking at the Tabulator view here

http://dig.csail.mit.edu/2005/ajar/release/tabulator/0.8/tab?uri=http%3A%2F%2Fiandavis.com%2F2010%2F303%2Ftoucan


I did notice that the Tabulator generates the two triples:

<http://iandavis.com/2010/303/toucan> <http://dig.csail.mit.edu/2005/ajar/ajaw/ont#mentionsClass> <http://xmlns.com/foaf/0.1/Document> .
<http://iandavis.com/2010/303/toucan> <http://dig.csail.mit.edu/2005/ajar/ajaw/ont#mentionsClass> <http://dbpedia.org/resource/Ramphastidae> .

Which leads me to wonder whether either you have a very erudite toucan there, or Tabulator may be exhibiting some element of confusion?

Though, yes, the mentionsClass property has domain rdfs:Resource (rather than some:Document), so there is no inference that the toucan is-a document,  though I do note the human-readable rdfs:comment for that property says

"This document mentions the following class"

Pete
---
Pete Johnston
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Received on Tuesday, 9 November 2010 10:35:18 UTC

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