39. The computer program storage product of claim 29 , wherein the method further comprises, for the domain of information creating a keyword hierarchy comprising unique keywords as representative of facet attributes in the domain.
40. The computer program storage product of claim 39 , wherein the method further comprises: defining a dimensional concept taxonomy for the domain of information, wherein the domain of information comprises a plurality of content nodes, wherein each of the plurality of content nodes is associated with one or more concepts represented by the concept definitions, said taxonomy comprising a hierarchy of dimensional concept relationships generated from the concept definitions and the keyword hierarchy, wherein each concept definition is mapped to one or more representative keywords of the keyword hierarchy.