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
>>
>
>