People seem to use either dct: or dcterms: as a prefix for the the http://purl.org/dc/terms/ namespace. Is there any guidance on which is "right"?

Hi does anyone know if there is an ideal property for describing the inverse of dcterms:subject? Or, would it be a case of having to define your own property for this relationship …

I am looking for ontologies to create RDFa-rich JavaDoc (for which I will write a custom Doclet). I think I can use a bit of Dublin Core, FOAF and DOAP at places, but I have no clu …