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Re: GRDDL Going to Last Call

From: Harry Halpin <hhalpin@ibiblio.org>
Date: Mon, 05 Feb 2007 16:46:21 -0500
Message-ID: <45C7A5AD.3050300@ibiblio.org>
To: Ben Adida <ben@adida.net>
Cc: tbaker@tbaker.de, schreiber@cs.vu.nl, www-archive@w3.org

You've had the typing idea for a while, but you need a

1) concrete mechanism that the WG agrees on - and at least one needs to
be suggested asap.
2) a use-case and text to be added to use-case document
3) text changes to the spec

I'm not pressing for it since I don't see what typing buys you besides
less processing done on the client side, and currently client-side
processing power is pretty cheap. However, I do think it's a generally
elegant idea if 1) can be done and found.

Re the javascript case,  there is no reason why an agent has to run
every transform if it can't process it. A RDFa/hGRDDL javascript agent
would run only those transforms it can, so for XHTML->RDFa hGRDDL, it
would run only those. We do not require the agent to run all transforms,
just run those it is equipped to, and we strongly recommend it run at
least XSLT 1.0, which I guess your hGRDDL/RDFa agent wouldn't do.

Ben Adida wrote:
> Harry,
> The latest RDFa documents are all linked from:
> http://www.w3.org/2006/07/SWD/wiki/RDFa
> which are a notable update since the last WD (I think I've sent the URLs
> out a few times.)
> That said, when this comes out in WD form, it will be updated at the URL
> you have ([7] in your references).
> I don't know about linking the RDFa bookmarklets in a WD or REC-track
> document... probably not stable enough for that.
> Regarding the ability of GRDDL to output any serialization of RDF: I
> know I haven't had very good attendance on the call, but I think the
> latest solution---to try every transform and figure out which one the
> agent cares about---is lacking. Unless these transforms can be typed in
> some way, they're not likely to be useful to an RDFa agent, especially
> since many RDFa agents will use client-side Javascript and thus not be
> able to "try every transform and see which one fits."
> I believe I've said this on GRDDL calls before, but if you need me to
> make this comment more officially, I can.
> -Ben
> Harry Halpin wrote:
>> I'm Harry Halpin, the Chair of the GRDDL WG [1] which links XML and
>> XHTML(including "microformats") to the Semantic Web in order to
>> faciliate the deployment of the Semantic Web. w
>> In order to prevent a "surprise" Last Call, I'd like for your WG to know
>> that we are going to go, barring any final comments or problems, to
>> request move to Last Call on or shortly after Feb 15th for the following
>> three documents:
>> 1) GRDDL Specification [2]
>> 2) GRDDL Primer [3]
>> 3) GRDDL Use Cases [4]
>> We believe this technology is related (of course!) to the SWD WG, and
>> we'd appreciate if this message was forwarded to either your listserv or
>> to interested parties in your list.
>> Primarily, we are interested in interoperating with RDFa, and have
>> included a use-case involving RDFa  [2] and in our Primer [3]. While
>> currently in our example in the Primer we will just RDFa as an "input"
>> format to extract RDF/XML from, in our Use-Case document we have a use
>> case that involves using a RDFa-aware browser and converting from
>> microformats to RDFa, much like Ben Adida's "hGRDDL" work [5]. We plan
>> to link to that work in our primer, should we use this link [6]?
>> Also, is this the most stable RDFa spec? [7] Is that URI going to
>> change? Also, since we are aiming for interoperability with SWD
>> specifications, if appropriate, do link to GRDDL specs.
>> Note that although people seem to forget this, GRDDL takes in an XML
>> document and produces an abstract RDF graph, which can be serialized as
>> RDFa, so GRDDL is *not* limited to producing RDF/XML.
>> The test-suite uses RDF/XML as its output tests, but it does not match
>> on the bytes, but on the graph.
>> [1 ]http://www.w3.org/2001/sw/grddl-wg/
>> [2] http://www.w3.org/2004/01/rdxh/spec
>> [3] http://www.w3.org/2001/sw/grddl-wg/doc29/primer.html
>> [4] http://www.w3.org/2001/sw/grddl-wg/doc43/scenario-gallery.htm
>> [5]
>> http://www.w3.org/2001/sw/grddl-wg/doc43/scenario-gallery.htm#scheduling_use_case
>> [6] http://www.w3.org/2001/sw/BestPractices/HTML/rdfa-bookmarklet/
>> [7] http://www.w3.org/TR/xhtml-rdfa-primer/
>>        thank you,


Harry Halpin,  University of Edinburgh 
http://www.ibiblio.org/hhalpin 6B522426
Received on Monday, 5 February 2007 21:46:35 UTC

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