Re: toString and fresnel

From: David R. Karger <>
Date: Tue, 22 Mar 2005 12:36:36 -0500

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   From: Eric Miller <>
   Date: Tue, 22 Mar 2005 09:50:53 -0500
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   On Mar 22, 2005, at 9:30 AM, David R. Karger wrote:

> please be more precise about in-your-face urls? is an in-your-face url.

> i am sure fresnel shows rdfs:label if it exists; question is what
> to do if there is none.


   Implementing variants of this problem in the past (and generalizing
   from various other implementations), the general approach seems to be
   hard-wired in code to look for (rdf:value, rdfs:label, dc:title) and
   then punt to an in-your-face url of the 'thing'. I'm hoping we can do
   better than that. :)

   Haystack seems to have gotten this pretty close. How is this being done?

Haystack has something analagous to fresnel:label, namely
hs:titleSourcePredicate specifies, for a given class, which properties can
serve as labels.

   As Emmanuel mentioned -

   "... fresnel:label (or at least there is label in it, Chris or Ryan
   will know better) and takes a URI reference (indicating a property) as
   the property value to be considered as the label."

   seems to be a start towards this.

   There are various issues to watch out for with objects that are
   multiple types (which in turn might have multiple fresnel:label (s) but
   thats a different thread.

   I just wanted to make sure this feature was in there somewhere. :)

> Perhaps rather then showing url, fresnel
> should print "unnamed <rdfs:Class of resource>"

   Yes. In the case of not knowing the 'label', applications should
   defaulting to some sort of additional helpful display. While this
   default will be application specific in the case of Longwell /
   PiggyBank / SemBank a linked version of the above is preferable to

   eric miller
   semantic web activity lead
   w3c world wide web consortium

> From Tue Mar
> 22 09:23:55 2005
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> To:
> From: Eric Miller <>
> Subject: toString and fresnel
> Date: Tue, 22 Mar 2005 09:23:52 -0500
> In your face URLs are a "bad thing".
> One of the uses I see of fresnel is being able to declaratively
> indicate human readable "default" labels for arbitrary resources. I
> suspect this is part of fresnel but I haven't seen this discussed yet.
> Can one of the fresnel folk confirm how this is currently handled?
> I just want to make sure we don't miss the simple use cases while
> dealing with the harder ones.
> --
> eric miller
> semantic web activity lead
> w3c world wide web consortium
Received on Tue Mar 22 2005 - 17:34:59 EST

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