Re: PROV-ISSUE-89 (what-entity-attributes): How do we find the attributes of an entity? [Formal Model]

On 02/09/2011 09:52, Provenance Working Group Issue Tracker wrote:
> PROV-ISSUE-89 (what-entity-attributes): How do we find the attributes of an entity? [Formal Model]
>
> http://www.w3.org/2011/prov/track/issues/89
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> Raised by: Luc Moreau
> On product: Formal Model
>
> The conceptual model defines an entity in terms of an identifier and a list of attribute-value pairs. It is indeed crucial for the asserter to identify the attributes that have been frozen in a given entity.
>
> Currently, the ontology does not seem to identify these attributes.
>
> To say that these attributes could be found by looking at all the properties for this entity does not work with an open world assumption.
>
> What mechanism do we have to identify these attributes?

A solution that can be adopted, although I am not sure if it poses 
efficiency problems, is to explicitly add a class in the ontology named, 
e.g., "EntityAttrribute", and an object property "charaterizedBy" that 
links Entity to EntityAttribute.

The attributes that characterize a given entity must then be defined as 
instances of EntityAttribute, and the link between the entity in 
question and the attributes characterizing it as instances of 
characterizedBy.

Khalid

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