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Re: Discussion with Ian and Henri about HTML5+RDFa (part 2/2)

From: Philip Taylor <pjt47@cam.ac.uk>
Date: Mon, 26 Jan 2009 20:08:55 +0000
Message-ID: <497E17FB.60207@cam.ac.uk>
To: public-rdf-in-xhtml-tf@w3.org
CC: Dan Brickley <danbri@danbri.org>, Ben Adida <ben@adida.net>, Manu Sporny <msporny@digitalbazaar.com>, Ian Hickson <ian@hixie.ch>, Henri Sivonen <hsivonen@iki.fi>, Sam Ruby <rubys@intertwingly.net>




Dan Brickley wrote:
> On 26/1/09 02:55, Ben Adida wrote:
>> On the issue of cut-and-paste: Creative Commons is, to my knowledge, the
>> biggest publisher of RDFa, and we haven't had much trouble getting users
>> to copy and paste proper RDFa. It's also been no problem getting folks
>> to add more complex ideas, like attribution name and URL (in fact, many
>> are pressing us to add more to our vocabulary, and we're being very
>> careful to do that only after serious consideration.)
> 
> That's great. When I talked with Ian he was asking how many RDFa use 
> cases were in the 'copy and paste something I don't understand' area 
> (akin to .js widgets), versus copy/paste but edit and tweak, vs hand 
> author etc. It is very good to have implementor feedback. Have you done 
> any statistics to see what proportion of CC RDFa is still a sensible RDF 
> graph, how often it is customised/tweaked and so on?

I don't have any decent statistics, but I've got some quick 
hacked-together data at http://philip.html5.org/data/cc-errors.txt

Brief summary:
As of a year ago, 0.1% of pages on dmoz.org (132 in my sample) had CC 
RDFa embedded in comments. (0.01% had it outside comments). Only one 
wasn't well-formed XML. Eight had an empty <License> element (I have no 
idea if that's a bad thing or not but it seemed odd). Two made incorrect 
assertions about licenses (e.g. saying that by-nc-nd permits 
DerivativeWorks), which looks like a case of 
copy-and-paste-and-tweak-and-get-it-wrong. So the error rate is low 
non-zero integer percentages.

-- 
Philip Taylor
pjt47@cam.ac.uk
Received on Monday, 26 January 2009 20:43:03 GMT

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