Re: issues with skos:related and Semantic Tags

Any named linked data resource can be (or in many way is) a
skos:Concept, inferring the type skos:Concept does not add any further
semantic implications (e.g. does not add any constraints or further
interpretations). I consider SKOS a non-intrusive way to relate to
"any kind of identified concept".

SKOS can be used in conjunction with any other existing schemes (e.g.
OWL) - it is meant exactly as a bridging technology.

See http://www.w3.org/TR/skos-primer/


I would still agree on questioning the need for the blank node and
oa:SemanticTag - in many ways just identifying dbr:Paris *as* a
skos:Concept should be sufficient to make its usage a 'semantic tag'.
(In some ways the 'tag' is the annotation relating the concept with
the annotated target resource, not the concept itself which is used
for many things.



What is the challenge with oa:SemanticTag is if it should be a
localized resource per annotation (e.g. blank node as you say), or if

In the original Open Annotation Data Model  ontolology, oa:SemanticTag
was meant to be used directly on the concept, similar to skos:Concept:

> A class assigned to the Body when it is a semantic tagging resource; a URI that identifies a concept, rather than an embedded string, frequently a term from a controlled vocabulary. It is NOT RECOMMENDED to use the URI of a document as a Semantic Tag, as it might also be used as a regular Body in other Annotations which would inherit the oa:SemanticTag class assignment. Instead it is more appropriate to create a new URI and link it to the document, using the foaf:page predicate.

http://www.openannotation.org/spec/core/core.html#Tagging


But this would mean those also become oa:Tag instances - so dbr:Paris
would become a oa:Tag - which I think is more intrusive than saying it
is a skos:Concept (as any dbpedia resource) that is related to a tag.
If you then add a "value" (or cnt:chars as it was in OA) to the
oa:Tag, you are trying to add new (possibly annotation-centric) labels
to an existing third-party concept, which could be wrong.


I would wonder a bit about skos:related rather than skos:closeMatch or
even skos:exactMatch, as it is a quite a loose relation.. which leaves
the blank oa:SemanticTag a bit meaningless.. a target resource has
been tagged with something that is related with Paris, but we don't
know what that something is (except hopefully it would also have a
"value": "Paris" from oa:Tag, and as such is a ad-hoc skos:Concept).

Received on Monday, 14 September 2015 09:51:16 UTC