Use of properties in combination with the Annotation class

[mielvds]

Hi there! I'm looking into using ebucoreplus:Annotation for describing automatically annotated content by means of Face Recognition and so on. Using ebucore(plus) for this seems like a great fit, but I have some questions about some of the properties.

I'm also not sure I'm interpreting the ontology correctly, so I'll walk through an example. Let's say I have a media resource and I want to annotate the appearance of Brad Pitt (wdt:Q35332) from second 5 to 10.

<x> a ec:MediaResource.

<x#t=5,10> a ec:MediaFragment; 
ec:isMediaFragmentOf <> .

<y> a ec:Annotation;
ec:hasAnnotationTarget <x#t=5,10> .

So far so good I think. Definition of ec:hasAnnotationTarget says "To define the target object to which the Annotation applies.", so I think its fine. But now I want to link to Brad Pitt.

<y> ebucore:hasAnnotationAgent wdt:Q35332 .

Is that the correct use of this property? The definition is a bit confusing: "To define the Annotation instance of an Agent. ". This could mean a lot of things.

I also see that the superproperty ebucore:hasAnnotationPurpose (which I interpreted to be the most generic one, but it's hard to teel, because the defintion/label are wrong), ebucore:hasAnnotationRelatedAgent, ebucore:hasAnnotationRelatedLocation (which had a slightly clearer definition) are gone. Does that mean that ebucore:hasAnnotationAgent now has a generic use, so it doesn't matter wheter it's a Location or artefact?

Best regards!

Miel

[JuergenGrupp]

Hi Miel, thank you for your question! I think you used ebucore correctly for pointing to the Thing that is annotated (the MediaFragment) and the "meaning" of the annotation, i.e. "annotating an Agent to a Thing" (hasAnnotationAgent). For "annotating a Location to a Thing" you could use "hasLocation" (I think). You observed that hasAnnotationRelatedAgent and hasAnnotationRelatedLocation are gone. They have not made it through the merge of CCDM and EBUCore into EBUCorePlus. I assign this issue to @tormodv who executed the merge and might remember the reason to do so. He will confirm or reject my proposal.

[mielvds]

FWIW, I think that sticking with just ebucore:hasAnnotationAgent is the better modeling choice, but its definition needs to be more clear.