20. The computer of claim 19 , wherein the pervasiveness of the candidate facet attribute relationship is measured as the likelihood that the facet attribute relationship holds true in all concept relationships in which it presents.
19. A computer comprising: at least one tangible memory that stores processor-executable instructions for performing a method identifying elemental facet attribute relationships in a domain of information comprising a plurality of concepts; and at least one hardware processor, coupled to the at least one tangible memory, configured to execute the processor-executable instructions to: identify a plurality of concept relationships between pairs of concepts in the plurality of concepts; identify at least one facet attribute in each of at least some of the pairs of concepts; based, at least in part, on the identified plurality of concept relationships, identify a set of candidate facet attribute relationships between the facet attributes in the at least some of the pairs of concepts; and determine whether to include a candidate facet attribute relationship from the set of candidate facet attribute relationships in a modified set of candidate facet attribute relationships based, at least in part, on the pervasiveness of the candidate facet attribute relationship.