17. The computer system of claim 1 comprising a facet analysis component for defining the faceted data set for sharing among a plurality of domains of information, said facet analysis component configured to receive input information and discover the facets, facet attributes, and facet attribute hierarchies of the input information, said input information comprising at least one of information of any of the domains to be classified and feedback from respective domain concept taxonomy information.
18. The computer system of claim 17 comprising a classification synthesis component for building respective dimensional concept taxonomies for each of the plurality of domains, said classification synthesis component defining the concept definitions and expressing the dimensional concept relationships between the concepts for each respective domain to be classified in accordance with the faceted data set.