[ckan-dev] Recent DCAT/RDF work on ckanext-dcat

Fri Oct 31 12:45:54 UTC 2014

Thanks Jan,

That's the kind of feedback I was hoping by publishing this comment about
our role. I'll have a look at you methodology.

On Fri, Oct 31, 2014 at 7:04 AM, Jan Kučera <elquenor at gmail.com> wrote:

> Dear Stéphane and all,
>
> first, it is good to hear about the DCAT RDF support in CKAN. Second I am
> responding to the note about the best practices for open data that you are
> working on at Open North. In the COMSODE project [1] we recently developed
> a methodology called "Methodology for publishing datasets as open data"
> which discusses the open data publication process and the related practices
> [2-4]. This methodology might be relevant to your standardization
> activities. We would be glad for any comments or feedback if you find any
> part of the methodology interesting.
>
> Kind regards,
>
> Jan
>
> [1] http://www.comsode.eu/
>
> [2]
> http://www.comsode.eu/wp-content/uploads/D5.1-Methodology_for_publishing_datasets_as_open_data.pdf
>
> [3]
> http://www.comsode.eu/wp-content/uploads/Annex1_D5.1-Documentation_of_practices.pdf
>
> [4]
> http://www.comsode.eu/wp-content/uploads/Annex2_D5.1-Methodology_Master_Spreadsheet.xlsx
>
> 2014-10-30 17:10 GMT+01:00 Stéphane Guidoin <stephane at opennorth.ca>:
>
>> Thank you Adrià,
>>
>> This is very good news! DCAT improvement was part of the important stuff
>> from my point of view (in the Trello board).
>>
>> There is an extension to also support data.json format, which is a DCAT
>> JSON serialization (I don't know how close it is from spec on
>> datacatalogs.org) and there's also an CKAN extension to support
>> data.json. Do you know if there was a look to integrate data.json (both to
>> parse and produce) in the dcat extension?
>>
>> ***
>>
>> As a side note: as a member of the open data working group of the OGP,
>> Open North is working (with some folks at the US GSA) on best practice in
>> terms of open data standardization (from encoding to data formats, and
>> everything that make open data more accessible). For the moment, we are at
>> the step of inventory of practice so clearly everything around DCAT and
>> other metadata format is of interest for us.
>>
>> Cheers
>>
>> Stéphane
>>
>> On Thu, Oct 30, 2014 at 11:30 AM, Adrià Mercader <adria.mercader at okfn.org
>> > wrote:
>>
>>> Hi all,
>>>
>>> I just wanted to point people interested in DCAT and more generally
>>> RDF + CKAN to some recent work that has been done in ckanext-dcat.
>>>
>>> To give some context, a while ago we propose a simple spec [2] for
>>> sharing metadata across catalogs based on DCAT terms. This provided a
>>> specific serialization format that catalog owners could implement on
>>> JSON or XML, and that is supported by ckanext-dcat to import metadata
>>> from other catalogs.
>>>
>>> We still think that this spec is useful for publishers that don't want
>>> or can't go through the process of publishing proper semantic
>>> descriptions of the catalog records in RDF. But is also true that
>>> restricts the possibilities of interacting with other catalogs that
>>> are publishing their metadata in various RDF formats and
>>> serializations, commonly under a certain DCAT Application Profile.
>>>
>>> In that regard, ckanext-dcat now offers a generic RDF based parser and
>>> harvester that allows importing DCAT-based RDF in different
>>> serialization formats and create/update/delete CKAN datasets
>>> accordingly.
>>>
>>> From the updated README:
>>>
>>> "In terms of CKAN, this extension offers:
>>>
>>> * A base mapping between DCAT and CKAN datasets.
>>> * An RDF Parser that allows to read RDF serializations in different
>>> formats and extract CKAN dataset dicts, using customizable plugins.
>>> * An RDF Harvester that allows importing RDF serializations from other
>>> catalogs to create CKAN datasets.
>>> * An JSON DCAT Harvester that allows importing JSON objects that are
>>> based on DCAT terms but are not defined as JSON-LD, using the
>>> serialization described in the spec.datacatalogs.org site.
>>> "
>>>
>>> The examples folder [3] contains examples of different serializations
>>> successfully parsed and imported into CKAN.
>>>
>>> This work has been made possible by the Government of Sweden and
>>> Vinnova, as part of work on the upcoming version of  Öppnadata.se, the
>>> Swedish Open Data Portal.
>>>
>>>
>>> Feedback and issues are most welcomed!
>>>
>>> Cheers,
>>>
>>> Adrià
>>>
>>>
>>>
>>> [1] https://github.com/ckan/ckanext-dcat/
>>> [2] http://spec.datacatalogs.org/
>>> [3] https://github.com/ckan/ckanext-dcat/tree/master/examples
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>>
>>
>>
>>
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>
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-- 
Stéphane Guidoin
Director of product and service development
Open North
514-862-0084
http://opennorth.ca
Twitter: @opennorth / @hoedic
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