The introduction of a persistent and standardised identification of resources is a challenge and a commitment at the same time.
The Publications Office has put forward a proposal for an URI template for the EU Open Data Portal. The proposed template tries to combine two requirements: to provide a guideline for data providers, which have not yet defined an URI scheme for their datasets and to provide the possibility of the integration of existing URI schemas into referencing mechanism of the ODP.
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ISA has a also published a study on good practices for designing and managing persistent URIs drawing upon the experiences of Member States, EU institutions, EU-funded projects and other initiatives.
The study is available here.
The ISA study is already referenced in the DCAT-AP specification. If you provide the URL of the proposal for an URI templet from the Publications Office, I'll include it in section 11.1.
What about usingor aligning on DataCite (http://www.datacite.org/) which is based on DOI. This is being adopted by several statistical agencies around the globe (http://www.datacite.org/members). I'm concerned here by having too many different ways to create URIs.
I can certainly refer to DataCite in the specification (section 7.3.3). I can also note about the potential use of DataCite as a possible approach to URI assignment.
For our much smaller organisation, we use a cut down version of this, but I agree with 90% of it.
Our notable variation/innovation/herasy is to use a sub-domain for URI resolution; http:/id.southampton.ac.uk/ so that the data does not have to be hosted in as strict a way as the URIs. Long term we anticipate different URIs being passed to various services to resolve.
It also *massively* improves the initial understanding of RDF to have a stand alone domain for our persistant URIs which makes them much more clearly distingished from the data uris.
Consideration
It could indeed be helpful to point implementers to best practice for URIs.
Proposed resolution
Add a link to DataCite
Proposed action
Update specification, adding a paragraph to section 11.3: “Several statistical agencies around the world are adopting DataCite URIS [footnote: http://www.datacite.org/].
The proposed resolution was rejected by the WG in the meeting on 18 July 2013, see report at https://joinup.ec.europa.eu/document/dcat-application-profile-wg-virtual-meeting-2013-07-18.
No mention of DataCite will be made in ssction 11. Dataset will only be mentioned in the list of examples of identifiers in section 7.3.3
Resolution implemented in draft 0.04 at https://joinup.ec.europa.eu/document/dcat-application-profile-data-portals-europe-draft-final-text