add type prov:Agent to instrument instances

[zednis]

references USGCRP/gcis-ontology/issues/124.

This type is inferable from the domain of prov:contributed; adding it to the template to make the type information explicit without requiring reasoning.

[justgo129]

👍

[bduggan]

Merged, but I'm curious about handling this in general, e.g. everything used to explicitly be a prov:Entity but now that is only inferrable.

[bduggan]

https://github.com/USGCRP/gcis/blob/master/lib/Tuba/Doc.pm#L27

[zednis]

@bduggan was there a decision made to stop explicitly typing instances with type prov:Entity? Since we aren't running any reasoning on the instance data queries for instances of type prov:Entity do not return results.

This causes the default query at http://data.globalchange.gov/sparql to return 0 results.

I would say leave the explicit typing of inferrable types in until and unless we start doing RDFS inference prior to the triplestore load.

[bduggan]

On Wednesday, August 19, Stephan Zednik wrote:

@bduggan was there a decision made to stop explicitly typing instances
with type prov:Entity?

Yes, I think so. The idea was that the templates should be as minimal
as possible. Having 'prov;Entity' in the templates is redundant and thus
incurs a maintainance cost (i.e. what is and what isn't a prov:Entity
has to be maintained in both the templates and the ontology).

Since we aren't running any reasoning
on the instance data queries for instances of type prov:Entity
do not return results.

This causes the default query at http://data.globalchange.gov/sparql to return 0 results.

I would say leave the explicit typing of inferrable types in until and unless we start doing RDFS inference prior to the triplestore load.

I would vote for doing inferencing (though I say this without
knowing what's involved on the technical side, e.g. why
does it have to be prior to the load, can't virtuoso do it
for us after the load?).

Brian

[zednis]

I'll create a new ticket in gcis for discussions on inferencing.

[justgo129]

👍 for the new ticket. I'm a big fan of inferencing, by the way.