1. In a computer system comprising at least one hardware processor and at least one tangible storage medium, a method of identifying elemental facet attribute relationships in a domain of information comprising a plurality of concepts, wherein the method comprises: identifying a plurality of concept relationships between pairs of concepts in the plurality of concepts; identifying 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, identifying a set of candidate facet attribute relationships between the facet attributes in the at least some of the pairs of concepts; and determining 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.