Re: rdfa vs. links

Martin, William,
 
Thanks for your comments! FYI: I've updated my blog post accordingly ...

Cheers,
      Michael

-- 
Dr. Michael Hausenblas
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html



> From: Martin Hepp <martin.hepp@ebusiness-unibw.org>
> Date: Tue, 26 Oct 2010 18:17:18 +0200
> To: Michael Hausenblas <michael.hausenblas@deri.org>
> Cc: William Waites <ww@styx.org>, Semantic Web community <semantic-web@w3.org>
> Subject: Re: rdfa vs. links
> 
> Hi Michael:
> 
> Thanks for your analysis. I did a related study for the presentation at
> 
>    http://www.slideshare.net/mhepp/goodrelations-semtech2010-4590918
> 
> Look at slide #11, please (also attached).
> 
> The net effect of even sophisticated RDFa on loading times is usually
> minimal, because of the following effects:
> 
> 1. Page sizes of typical Web pages are significant, due to Javascript,
> images, ... 100 kb for simple pages is nothing.
> 
> 2. RDFa payload can be compressed pretty well.
> 
> 3. There is a fixed delay caused by setting up the server connection,
> so the net effect is less than linear with page size.
> 
> Note that you can create RDFa snippets for ANY RDF/XML content you
> want using our tool at
> 
>     http://www.ebusiness-unibw.org/tools/rdf2rdfa/
> 
> Best
> 
> Martin
> 
> 
> 
> 
> 
> On 26.10.2010, at 16:31, Michael Hausenblas wrote:
> 
>> 
>> William ,
>> 
>> Your question motivated me to eventually carry out an experiment I
>> thought
>> of a while ago. Now I got my act together and eventually published
>> some
>> observations on the topic of HTML+RDFa load time dependencies on the
>> number
>> of embedded triples [1]. I hope you find this useful ;)
>> 
>> Cheers,
>>      Michael
>> 
>> [1] http://webofdata.wordpress.com/2010/10/26/rdfa-profiling/
>> 
>> -- 
>> Dr. Michael Hausenblas
>> LiDRC - Linked Data Research Centre
>> DERI - Digital Enterprise Research Institute
>> NUIG - National University of Ireland, Galway
>> Ireland, Europe
>> Tel. +353 91 495730
>> http://linkeddata.deri.ie/
>> http://sw-app.org/about.html
>> 
>> 
>> 
>>> From: William Waites <ww@styx.org>
>>> Reply-To: William Waites <ww@styx.org>
>>> Date: Sun, 24 Oct 2010 19:33:14 +0200
>>> To: Semantic Web community <semantic-web@w3.org>
>>> Subject: rdfa vs. links
>>> Resent-From: Semantic Web community <semantic-web@w3.org>
>>> Resent-Date: Sun, 24 Oct 2010 17:34:05 +0000
>>> 
>>> The argument was recently put to me that "rdfa was designed for
>>> layering rdf into html". While I'm not against the idea of doing
>>> this (and am happy to get data this way from people who find
>>> it more convenient to make them available with RDFa) I generally
>>> prefer to make RDF/XML and N3 available and link to them using
>>> meta http-equiv.
>>> 
>>> So the question is about best practices. I can also layer CSS
>>> and JavaScript in HTML using <script> and <style> tags and in
>>> some circumstances it might actually be convenient to do so
>>> but generally I think is better to link to them as separate
>>> documents. Is this not so also with RDF?
>>> 
>>> Cheers,
>>> -w
>>> 
>> 
>> 
>

Received on Tuesday, 26 October 2010 17:26:48 UTC