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Data Catalog Vocabulary (DCAT)
https://w3c.github.io/dxwg/dcat/
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Dataset to Catalog association #1288

Closed riannella closed 3 years ago

riannella commented 3 years ago

It would also be useful to add a new explicit association from Dataset to Catalog. (inverse of dcat:dataset)

dr-shorthair commented 3 years ago

Creating purely inverse relationships is often frowned upon, with the argument that the same effect can be gained by including a single triple in the original direction in the dataset, so having the inverse is unnecessary.

andrea-perego commented 3 years ago

@riannella , is @dr-shorthair 's reply addressing your comment?

If this is not the case, could you please explain the use case behind the proposal of supporting the inverse of dcat:dataset?

riannella commented 3 years ago

The use case is Aviation datasets. We are working on a mapping to use DCAT now: https://ext.eurocontrol.int/aixm_confluence/display/ADS/DCAT2+and+ISO+19115+representation

You can see there is a requirement in the Dataset to refer to which Dataset Series (dcat:Catalog) it belongs to.

We currently use the general dct:isPartOf property.

(We prefer not to expose dataset users to owl:inverseOf concepts, when we can make the property more explicit)

andrea-perego commented 3 years ago

Thanks, @riannella . So, basically, this is about how to map to DCAT the ISO 19115 element MD_DataIdentification.citation.CI_Citation.series.

Actually, your approach (dct:isPartOf) is the same used in the dataset series section of the current DCAT3 ED. Do you think a more specific property is needed?

On a different note:

I see that for the mapping between ISO 19115, DCAT, and Schema.org you are referring to:

https://www.w3.org/2015/spatial/wiki/ISO_19115_-_DCAT_-_Schema.org_mapping

Please note that that wiki space has been frozen, and therefore the mappings have not been updated wrt the latest versions of DCAT and Schema.org.

An up-to-date and more fine-grained mapping from ISO 19115 to DCAT is defined in GeoDCAT-AP:

https://semiceu.github.io/GeoDCAT-AP/releases/#rdf-syntax-bindings-for-inspire-and-iso19115-metadata-elements

riannella commented 3 years ago

Hi @andrea-perego - given what is said in Section 11.1 - does this mean using dcat:Catalog as the "data set series" is not recommended?

andrea-perego commented 3 years ago

@riannella , @dr-shorthair , as the discussion has moved to https://github.com/w3c/dxwg/issues/1272 , I'm closing this issue.