[ckan-discuss] CKAN suggestions

Augusto Herrmann augusto.herrmann at gmail.com
Wed Nov 23 20:50:06 GMT 2011

IMHO, both a controlled vocabulary and flexible folksonomy tags are useful
and can coexist in harmony. As Morville & Rosenfeld put it on their
Information Achitecture book [1], "on some projects, we'll have the
opportunity to bridge the gap, using both tags and taxonomies to connect
users with the content they seek."

In December I shall take some days off work, and a side-project I'm
considering to undertake is building a simple python package, dependant on
RDFLib, to ease the manipulation of SKOS data. That should make it easier
to create a CKAN plugin for a controlled vocabulary that can import from

[1] http://books.google.com/books?id=2d2Ry2hZc2MC&pg=PA80

Augusto Herrmann

On Tue, Nov 22, 2011 at 1:00 PM, David Read <david.read at okfn.org> wrote:

> On 22 November 2011 14:00, Richard Cyganiak <richard at cyganiak.de> wrote:
> > (Apologies for responding to such old mails – I'm catching up on some
> unread list mails, and some things are just too interesting to let them
> pass by without a comment ;-)
> >
> > On 31 Oct 2011, at 17:22, David Read wrote:
> >> * Controlled Vocabulary Support - SKOS
> >>     Besides the existing folksonomy tags for packages, there should be
> >> the possibility that the catalog administrator could set up a
> >> controlled vocabulary, in SKOS format, that would be used in a
> >> specific field when an user would register or edit a package. The
> >> field could use autocomplete to search on the labels for the
> >> skos:Concept s and display them for users, but record the concept URIs
> >> on the database.
> >>
> >> DR: I think this is a great idea. We've had several people mention
> supporting a field for a controlled taxonomy. Which one used should be
> configurable by instance, but for thedatahub.org we'd want something
> pretty generic. How do people feel about SKOS, Eurovoc etc?
> >
> > If you decide to add support for controlled vocabulary, then I fully
> support the idea of being able to import the vocabulary from SKOS.
> >
> > Note that EUROVOC is available in SKOS format:
> > http://thedatahub.org/dataset/erovoc-in-skos
> Perfect - thanks! I would love to be able to import this sort of
> controlled vocabulary into CKAN.
> Does anyone else agree with the usefulness of a controlled vocabulary,
> or are flexible tags useful in general? If we can get enough weight
> behind controlled vocab, then we can prioritise some time for it to be
> coded into CKAN.
> David
> >
> > Best,
> > Richard
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