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Re: [dxwg] Profiles Ontology Figure 3 (#731)

From: Rob Atkinson via GitHub <sysbot+gh@w3.org>
Date: Thu, 21 Feb 2019 23:08:05 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-466205587-1550790484-sysbot+gh@w3.org>
Thanks @fellahst .

The semantic grounding here is full consistent with the W3C profiles vocabulary:

"One or more subsets of vocabularies can be used to define an application profile. The concept of Profile is defined as a subclass of Dublin Core dct:Standard. A dataset used by a given application conforms (dct:conformsTo) to an application standard. A vocabulary can be used by multiple application profiles."

The additional semantics of a "schema" seem to be the key area where this work is more specialised than the general solution. The idea of schema mappings is out of scope, but perhaps it is another resource with a different role using the qualified role metamodel of prof:ResourceDescriptor/prof:hasRole 

From what I see it looks like treating a schema as an expression of the profile in the W3C profiles/dcat alignment is a special case of a dcat:Distribution, via the class prof:ResourceDescriptor.   I think you could keep these classes and axiomitise a x:Schema rdfs:subClassOf prof:ResourceDescriptor - and if you want to preserve the "schema" role is could be a subProperty of prof:hasResource.  

If you concur please note that here,  or if you disagree could you provide a worked example using the prof: vocabulary to show where it fails to support your needs? 

w.r.t. the further work suggestion : 

"Metamodel for RDF Application Profiles: This ER proposes an initial metamodel for describing RDF application profiles. It aims at facilitating search and discovery of application profiles based on specific ontologies. Testbed-12 investigated an Application Programming Interface (API) for a semantic mediation service and defined an SRIM profile for a semantic registry to represent schemas and schema mappings. This work can be extended and refined to accommodate RDF application profiles, so they can be searched and discovered by registry clients and used by a semantic mediation service."

I think the emergence of a consistent but more general W3C model for profiles could be used as the basis for an extended model to support the same competency questions, and this would be a good focus for a followup testbed. 

Note that I will be describing the subset of OGC published specifications that are profiles (according to the general conceptual model) using the W3C profiles vocabulary in the OGC Definitions Server - and it could easily be extended to support these more specialised concepts.

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