[foaf-dev] foaf:topic and dcterms:subject

Dan Brickley danbri at danbri.org
Thu Apr 23 12:18:49 CEST 2009


On 23/4/09 10:37, Danny Ayers wrote:
> I was looking for a 'topic' term and landed on dcterms:subject [1]
> first, but then yesterday chatting with Leigh he mentioned foaf:topic
> [2]...
>
> I'm guessing the old DC Elements dc:subject would often be used with
> literal object, but the DC Terms definition explicitly suggests a
> non-literal object. So unless I'm missing something, these properties
> have very similar semantics (only real difference being foaf:topic
> rdfs:range foaf:Document).
>
> foaf:topic is presumably already too well deployed to deprecate, so to
> get some kind of alignment might it make sense to make foaf:topic
> rdfs:subPropertyOf dcterms:subject ?
>
> (dcterms:subject rdfs:subPropertyOf dcelements:subject which might
> mess up a few inferences if a literal object is used)
>
> Maybe for max connectivity in published data it would be best to
> include both properties (same ?s&  ?o)..?
>
> Thoughts?
>
> Cheers,
> Danny.
>
> [1] http://dublincore.org/documents/dcmi-terms/#terms-subject
> [2] http://xmlns.com/foaf/spec/#term_topic
>



More information about the foaf-dev mailing list