[tdwg-content] DSW questions

Hilmar Lapp hlapp at nescent.org
Thu Jan 26 02:06:19 CET 2012

Hi Steve and Cam,

I have a question re: your design of the current Semantic Darwin Core ontology. (And this is assuming that with the published 0.2 version I have the latest one in hand.)

My understanding is that all classes in DSW are imported from either DwC or DC (or FOAF), in order to reuse those terms. While that's a good idea in principle, it seems that DSW is actually not saying much new (in a semantic sense) about them, except to declare them to be OWL classes, and to assert them as disjoint from each other (or equivalent in one case). DSW then adds a variety of object (and some data) properties, which distinguish themselves from those in DwC by declaring domain and range axioms for them. But that doesn't say anything about the classes either, nor does it, I would argue, about the properties - domain and range constraint really only say something about the instances for which one asserts those properties.

So by itself the DSW won't allow me to infer anything about the classes and properties in the ontology (aside from disjointness), though it will allow me to make more inferences about instance data to which it is applied than DwC would. And those additional inferences would consist only of the instances' class memberships (and their non-memberships).

I'm wondering a) whether I'm missing something here and am in error, and if not, b) whether the above was indeed the extent of what you wanted to achieve with DSW. Either way, what are your current plans with the ontology? It doesn't seem to have changed for a while.

(And please forgive me if this isn't the right list to post to - I couldn't find a DSW-specific one on the Google code homepage.) 


: Hilmar Lapp  -:- Durham, NC -:- informatics.nescent.org :

More information about the tdwg-content mailing list