5. The method of claim 4 , wherein the act of identifying a set of candidate facet attribute relationships between the facet attributes in the at least some of the pairs of concepts further comprises: identifying a first facet attribute relationship between the first and third facet attributes; identifying a second facet attribute relationship between the first and fourth facet attributes; identifying a third facet attribute relationship between the second and third facet attributes; and identifying a fourth facet attribute relationship between the second and fourth facet attributes.
4. The method of claim 2 , wherein the plurality of concept relationships comprises a first concept relationship between a first of the plurality of concepts and a second of the plurality of concepts, and wherein the act of identifying at least one facet attribute in at least some of the pairs of concepts further comprises: identifying first and second facet attributes in the first of the plurality of concepts and identifying third and fourth attributes in the second of the plurality of concepts.