[ckan-discuss] Next version of the LOD cloud diagram. Please provide input, so that your dataset is included.

William Waites william.waites at okfn.org
Wed Sep 8 18:48:28 BST 2010

On 10-09-08 17:47, Ted Thibodeau Jr wrote:
> On Sep 8, 2010, at 01:31 AM, Peter DeVries wrote:
>> I am kind of annoyed by the CKAN site.
> I'm right there with you, Peter.
> Anja, you say "you can edit without logging in" but please note that
> the doc page [1] about this "database" says --
>    • Please register to CKAN bevor editing or adding any packages.

The login issues should be fixed now. Something had changed
at Google and Yahoo that was causing them to return 501
Unimplemented errors when the association was made. Updating
python-openid to a newer version (2.2.5) appears to have
solved the problem. Please let me know if anyone has further
troubles logging in.

> When I ignore that and do dive into editing DBpedia's listing, 
> I discover --

(Leaving your comments intact for the ckan-discuss list, you
are correct that it is an RDBMS system and that starts
showing through clearly when people used to thinking in an
RDF or EAV way start throwing data at it. I am particularly
interested in looking at ways to improve this, keeping in
mind that it is a running system with real users and a lot
of effort that has gone into building it -- so we need to be

> - The "notes" field uses "Markdown" markup, which I've never 
>   encountered anywhere else, and must now learn (or fake).
> - There must be a singular author, with a singular email address.
>   DBpedia doesn't have a singular author, and there are several
>   URIs which might be relevant to have here -- and they are not
>   mailto: URIs.  The best is an http: URI ... but there is no way
>   to make this present, except as part of the literal associated
>   with the mailto: URI.
> - There must be a singular maintainer, with a singular email address.
>   Same issues as with author.
> - There are 14+ CKAN Resource links listed [2] in the documentation, 
>   but the form appears to only take 5 (at least, 4 were previously
>   filled on the DBpedia page, and filling in the 5th didn't magically
>   cause a 6th to open, nor was there a link to create a 6th).  OH!
>   Until I "Preview" the page -- and now there's an empty set of 
>   Resource boxes ... so I can add one more, and Preview, and maybe
>   add one more, and Preview, and maybe....  Painful.
> - The licensure choices separate CC-ShareAlike and CC-Attribution, but
>   do not list CC-Attribution-ShareAlike [3].  cc-by-sa is distinct from
>   cc-by -- and also from cc-by-nc-sa (CC-Attribution-NonCommercial-
>   ShareAlike), among others.  Clarity of presentation is VERY important 
>   for licensing!
> - There appears to be an arbitrary limit on the number of "Extras" 
>   key-value pairs associated with any given data set ... which means
>   that *truly* densely connected data sets will be short-changed.
> From all I can see here, this is an RDB-based thing, not RDF-based.  That's disappointing, to say the least.
> All in all, the experience is challenging at best, when listing one 
> data set.  But I have several more to deal with, and today's the 
> deadline!  Hurrah!
> *sighs*
> Ted
> [1] <http://esw.w3.org/TaskForces/CommunityProjects/LinkingOpenData/DataSets/CKANmetainformation#How_do_I_add_a_dataset_to_CKAN_or_edit_an_existing_dataset.3F>
> [2] <http://esw.w3.org/TaskForces/CommunityProjects/LinkingOpenData/DataSets/CKANmetainformation#CKAN_resource_links>
> [3] <http://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License>
> --
> A: Yes.                      http://www.guckes.net/faq/attribution.html
> | Q: Are you sure?
> | | A: Because it reverses the logical flow of conversation.
> | | | Q: Why is top posting frowned upon?
> Ted Thibodeau, Jr.           //               voice +1-781-273-0900 x32
> Evangelism & Support         //        mailto:tthibodeau at openlinksw.com
>                              //              http://twitter.com/TallTed
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>     Universal Data Access and Virtual Database Technology Providers

William Waites           <william.waites at okfn.org>
Mob: +44 789 798 9965    Open Knowledge Foundation
Fax: +44 131 464 4948                Edinburgh, UK

RDF Indexing, Clustering and Inferencing in Python

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