Re: Considerations on RDF presentation

From: Emmanuel Pietriga <>
Date: Wed, 04 May 2005 07:57:01 +0200

Ryan Lee wrote:

>> First, the requirements:
>> a) the tree should be mainstream XML, so as to be easy to process with
>> XML/tree-world tools (XSLT, template languages, CSS,...)
>> b) the tree should contain information about what each element
>> represents (e.g. a property label, a property value,...) as this
>> information is important for the styling phase
>> c) Chris would like to be able to express RDF-ish styling rules on
>> this tree, such as "color in red all foaf:Person instances that have a
>> foaf:surname equal to 'Smith'". Depending on whether foaf:surname was
>> selected by the lens as a property to show or not, this information
>> might or might not be present in the tree. The absence of foaf:surname
>> info in the tree should not prevent us from expressing conditions such
>> as the one above. Besides, it should still be possible (but not
>> necessary) to express these conditions from an RDF model/graph
>> perspective.
> I'll jump in here, realizing some of these points were covered later.
> I had started writing something similar and would add the following:
> - Contains the URIs of non-bNode resources - lack of a URI indicates
> that it is a bNode (Chris mentioned this)

We agree on this.

> - Does not reference other parts of the tree so the entire tree is
> represented

I don't understand what you mean.

> - Includes rdf:type URI used in determining that branch of the tree, if
> type was how it was done

What if it was not? It looks a bit inconsistent to me. But I'll get back
to that in my answer to your other email.

> - Strictly user-definable class names (class='baz') - don't use the
> class attribute (or whatever it would ultimately be called) for any of
> our purposes


> - Every part of the tree has a human-readable label

what do you mean by "part of the tree"?

Emmanuel Pietriga
INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
Bat 490, Université Paris-Sud    fax : +33 1 69 15 65 86
91405 ORSAY Cedex FRANCE
Received on Wed May 04 2005 - 05:55:52 EDT

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