59. The computer program product of claim 43 wherein the instructions and data configure the system to provide 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.
59. The computer program product of claim 43 wherein the instructions and data configure the system to provide 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. 61. The computer program product of claim 59 wherein the computer system comprises at least a first computer system and a second computer system in a distributed computing environment and wherein the instructions and data configure: (a) the first computer system to provide the facet analysis component for defining the shared faceted data set, said facet analysis component further defining from the shared faceted data set a domain-specific faceted data set for a domain to be classified; and (b) the second computer system to provide a classification synthesis component for building the dimensional concept taxonomies for one or more domains, said synthesis component defining the concept definitions and expressing the dimensional concept relationships between the concepts for each of the one or more domains to be classified in accordance with the respective domain-specific faceted data set.