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How to map national themes to MDR Data Theme Vocabulary?
- Missing themes
- Different grouping of themes
- Semantic differences
National implementations may use national classifications for published datasets, partly because such national classifications pre-existed the definition of the MDR Themes Vocabulary, and partly because national services require slightly different themes.
Sharing experiences concerning the way that national implementations map the national theme vocabulary to the European MDR themes will help implementers to define such mappings, thereby increasing interoperability across national implementations.
This issue has been reported by Hanssens Bart:
http://joinup.ec.europa.eu/mailman/archives/dcat_application_profile/2016-January/000351.html
Component
DocumentationCategory
improvement
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As an example, in .be we use (for example) this SKOS file for mapping the categories of the Brussels-Capital City portal (which is using OpenDataSoft, by the way) to the custom taxonomy of our data.gov.be Drupal site, and (more important) to the Publication Office MDR data-themes
https://github.com/Fedict/dcattools/blob/master/dist/cfg/bxlcity/data-m…
It is a very brute force / dumb approach, simple replacing user-entered keywords with the URIs of the controlled list, using a SPARQL query
https://github.com/Fedict/dcattools/blob/master/dist/cfg/bxlcity/sparql…
(ignore the drupal part and dgov namespace, it's a quick and dirty hack only needed for our portal, and it is filtered out when generating the final DCAT dump that is distributed on github)
Smarter services may perhaps scan the title and description metadata and look up some reasonable terms using WordNet or OpenCalais :-)
Proposed resolution:
We support this proposal.
Jean on the behalf of OP/OpenDataPortal