Re: Considerations on RDF presentation

From: Stefano Mazzocchi <>
Date: Mon, 21 Mar 2005 13:27:24 -0500

Chris Bizer wrote:
>>Two things, though, that I didn't realize: first of all CSS selectors
>>have no notion of namespaces. there was a proposal in 1999, but is still
>>as a working draft, so I'm really not sure that fresnel:value:after
>>would work.
> What are these guys doing?
> Why do we trying to build on prehistoric technologies?

I have the impression that they are still debating whether or not XSLT
is better to style XML than CSS.... obviously missing the point, since
XSLT has nothing to do with styling anymore.

Welcome to the world of standard bodies :-)

yeah, yeah, recommendations... whatever :-)

>>Second, the above feels still a little too much RDFish for my XML
>>tastes, there might be a way to make it look a little less verbose and
>>yet as expressive (maybe using some attributes... not sure really, but I
>>have that gut feeling that we can do more about this).
> I had attributes first, but the CSS for getting the information again out of
> the attributes was far beyond what any user would be willing to write down.
> Having nice CSS selectors was also the reason for the rather verbose XML.

I see, you are definately right in saying that CSS selectors was not
really meant to cope well with attributes

> I guess everybody will get what is meant with
> foaf:person > fresnel:property > foaf:depict > fresnel:value


>>>- Less expressive.
>>Why is it less expressive? not trying to be dense, just curious.
> Please express "Display all person that know more than 30 other persons
> using a special color" with a CSS selector ;-)

No, clearly not, but I think you are mixing concerns: the lens is the
one responsible for the complex graph selection, not the style part.

>>>- blurres the distinction between selection and styling (by having label
>>>and image in the lens)
>>True, although HTML suffers the same problem and we can't really say
>>HTML was a failure, can we? ;-)
> Might be true that blurring the distinction isn't a proplem.
> I'm not sure yet.
> Emmanuel, what do you think?
> Would something like this fit into IsaViz?
> Chris

Stefano Mazzocchi
Research Scientist                 Digital Libraries Research Group
Massachusetts Institute of Technology            location: E25-131C
77 Massachusetts Ave                   telephone: +1 (617) 253-1096
Cambridge, MA  02139-4307              email: stefanom at mit . edu
Received on Mon Mar 21 2005 - 18:25:54 EST

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