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Re: S5+RDFa + attribution to multiple people

From: Nathan Yergler <nathan@creativecommons.org>
Date: Sat, 3 Jan 2009 22:19:31 -0800
Message-ID: <c1a864630901032219x9e94483u8ce9645a92ab5560@mail.gmail.com>
To: "Sergey Chernyshev" <rdfa.info@antispam.sergeychernyshev.com>
Cc: "Ben Adida" <ben@adida.net>, RDFa <public-rdf-in-xhtml-tf@w3.org>

Hi Sergey --

We've had this discussion a few times at CC and decided that the way
we're doing it now more closely models the way the licenses are
actually written (see section 4b of
http://creativecommons.org/licenses/by/3.0/legalcode for one example).

The licenses allow you to specify a name and a URL (where copyright
information may be found) to use when attributing reuse of your work.
The biggest question when you specify more than one attribution
name/url pair (or more than one object) is what that really means --
do you have to attribute them all (which the license legal text
doesn't require -- it just says there should be a single URL) or
choose one (which probably isn't what creators really want)?

I think the key thing to remember is that the CC attribution
information is not intended to be a replacement or proxy for things
like contributor or creator metadata -- it's meant to convey
information which will allow users to comply with the license. As the
creator(s) of a work, you can decide how you want to be attributed and
that should be an explicit, literal string.  I'd argue that in most
cases you'd want both the attribution information as well as more
detailed creator/contributor metadata in a document.

In response to your other inquiries:

* We do have a prototype validator that was developed as part of a
Summer of Code project last year; one of the things on our agenda for
early this year is to finish reviewing that and push it out.
* The behavior you're seeing on the deeds is definitely sub-optimal --
there's a bug open for it
* There's a CC developer mailing list which is as good a place as any
to ask CC metadata-related questions.  See


On Sat, Jan 3, 2009 at 9:33 PM, Sergey Chernyshev
<rdfa.info@antispam.sergeychernyshev.com> wrote:
> Hi Ben,
> I'm working on implementing RDFa encoding for presentation-related
> information into S5 template and have a huge desire to include and promote
> licensing information as part of this.
> I was doing implementation with attribution to multiple people and had hard
> time making it recognized by a deed page.
> When I just use two cc:attributionName and two cc:attributionURL to
> represent two people, deed page just concatenates two values separating them
> with commas for each pair and obviously this makes bogus URL.
> It's probably not a way it should be done and some object property like
> "cc:attributedTo" should be used instead (which in turn has single values
> for cc:attributionName and single value for cc:attributionURL or similar
> attributes, maybe even foaf:name and foaf:homepage) to mark both authors of
> the work.
> Unfortunately, I couldn't find an object property like this in CC vocab
> (http://creativecommons.org/schema.rdf) and there is no explanation how to
> attribute work to multiple people.
> Also, it'll be great if there was some validator that would be able to tell
> a user if his/her HTML is properly marked with CC using RDFa and show
> identified properties.
> P.S. Is there any group/list I should be asking these CC+RDFa related
> questions?
>        Sergey
> On Wed, Nov 12, 2008 at 11:54 PM, Ben Adida <ben@adida.net> wrote:
>> Sergey Chernyshev wrote:
>> > Dan posted good links to Creative
>> > Commons case studies, but they don't talk about any tools that consumes
>> > this data.
>> We do have tools that consume RDFa :)
>> First is the deed itself. If you go to
>>  http://ben.adida.net/
>> and click on the license in the footer, you'll see that the Deed says to
>> "give attribution to Ben Adida [link]", what we do is look at RDFa in
>> the referrer URL.
>> There's more coming down the pipe with the CC Network, I'll keep the
>> list posted.
>> -Ben
> --
> Sergey Chernyshev
> http://www.sergeychernyshev.com/
Received on Sunday, 4 January 2009 06:20:14 UTC

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