Meta-Object Facility and Common Warehouse Metamodel

CWM, MOF, etc

OMG's Common Warehouse Metamodel is certainly a very good example of how data should be tagged and marked for ontological placement within a domain - and the related Meta-Object Facility (MOF) is a good enabling method.

I wonder if anyone has ever compared this to the Hierarchical Data Format, and it's metadata model?

Tags: ontology, mof, semantic web, tagging, xmi, hdf