> I have not had a deeper look, but is looks like you created yet  
> another RDF namespace with your own classes and your own properties  
> instead of reusing existing ontologies.
>
> The German National library has also created a mapping from their  
> internal authority format (it's not MARC!) to RDF:

Note that there is also the FRAD ontology in RDF that is for authority data:
    http://metadataregistry.org/schema/show/id/24.html
That ontology has a total of 143 (!) classes and properties.

Has anyone looked at FRAD and the MADS/RDF? My first reaction is that  
MADS/RDF is a generalized structure, while FRAD provides significantly  
more detail.

kc



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Karen Coyle
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