W3C

– DRAFT –
DCAT subgroup meeting

09 June 2021

Attendees

Present
AndreaPerego, DaveBrowning, riccardoAlbertoni__
Regrets
Alejandra
Chair
RiccardoAlbertoni
Scribe
AndreaPerego

Meeting minutes

<riccardoAlbertoni__> PROPOSED: approve last meeting minutes https://www.w3.org/2021/05/26-dxwgdcat-minutes

approve last meeting minutes

<riccardoAlbertoni__> +1

+1

<DaveBrowning> +1

Resolution: approve last meeting minutes https://www.w3.org/2021/05/26-dxwgdcat-minutes

approve agenda

<riccardoAlbertoni__> https://www.w3.org/2017/dxwg/wiki/Meetings:Telecon2021.06.09

riccardoAlbertoni__: Do we want to do any changes?

AndreaPerego: Not me

DaveBrowning: Fine with me

Should we move future teleconference on ZOOM or others systems?

Teleconf system

riccardoAlbertoni__: Should we move away from WebEx?
… Asking every time the host code is not very handy.
… Should we use zoom instead?

<riccardoAlbertoni__> PROPOSED: we move to zoom for future teleconferences (so that we do not have to ask for webex host code every meeting).

+1

<DaveBrowning> +1

<riccardoAlbertoni__> +1

Resolution: we move to zoom for future teleconferences (so that we do not have to ask for webex host code every meeting).

Issues related to dcat:theme and dcat:keywords

dcat:keyword subproperty of dcterms:subject, Issues https://github.com/w3c/dxwg/issues/1374 and https://github.com/w3c/dxwg/issues/175 :

riccardoAlbertoni__: Because now dcterms:subject has no range restriction, it could be also used by literals, so the issue can be probably dropped.

AndreaPerego: Not sure that this implies that dcterms:subject could be used with literals.

riccardoAlbertoni__: Yes, there are two issues here. The first one is about removing the subproperty relation.

AndreaPerego: I think the range can be safely dropped. I'm very much concerned about interoperability issues if we have properties that can be used with both literals and URI refs.

riccardoAlbertoni__: Yes, but on the DCAT side we specialise this, so we shouldn't have such issues.

AndreaPerego: Looking at the usage note in DCTERMS, mentioned by Antoine, I don't see an explicit statement about the fact that dcterms:subject can be used directly with literals.

riccardoAlbertoni__: So, let's keep on discussing this on GH.

:coherence between dcat:themeTaxonomy and dcat:theme. (Issues https://github.com/w3c/dxwg/issues/1364 and https://github.com/w3c/dxwg/issues/1153 )

riccardoAlbertoni__: The issue is about consistency of the range restrictions of dcat:theme and dcat:themeTaxonomy.
… Last time we decided to add a note about compatibility of owl:Class's and skos:Concept's.

<riccardoAlbertoni__> https://github.com/w3c/dxwg/pull/1380

riccardoAlbertoni__: There was also a discussion, where Simon was proposing to drop the range restriction, and explain the recommended use in the usage note.

<riccardoAlbertoni__> https://github.com/w3c/dxwg/pull/1379

riccardoAlbertoni__: Do you have any preference between the two PRs?

AndreaPerego: Fine for me to drop the range restriction and make them owl:ObjectProperty's, but we should make it clear that the use of these properties has not changed, and that we are just fixing a bug.

riccardoAlbertoni__: So we can add a note to make it clear.

<DaveBrowning> +1 to all of that

riccardoAlbertoni__: There's an ancillary issue - in the RDF we defined owl:ObjectProperty's, but we didn't make this explicit.
… Should we make the spec more consistent with the RDF.

https://github.com/w3c/dxwg/issues/1362 - Following the recommendation to use dct:type prevents using SKOS-based reference datasets or standard RDF typing

AndreaPerego: We can add a row "Type" saying whether this is a owl:DatatypeProperty or a owl:ObjectProperty.

riccardoAlbertoni__: Let's go that way.

riccardoAlbertoni__: Issue #1362 was basically addressed by the DCMI Usage Board. So Antoine proposes to close it.
… Should we close it, or go on with the discussion?

AndreaPerego: I think we can add a comment saying that, unless there are still open issues, we will close it.

[meeting adjourned]

Summary of resolutions

  1. approve last meeting minutes https://www.w3.org/2021/05/26-dxwgdcat-minutes
  2. we move to zoom for future teleconferences (so that we do not have to ask for webex host code every meeting).
Minutes manually created (not a transcript), formatted by scribe.perl version 136 (Thu May 27 13:50:24 2021 UTC).

Diagnostics

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