23. The computer of 22 , wherein the at least one hardware processor executes the processor executable instructions to identify a set of candidate facet attribute relationships between the facet attributes in the at least some of the pairs of concepts by: 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.
24. The computer claim 23 , wherein the at least one hardware processor executes the processor executable instructions to determine whether to include a candidate facet attribute relationship in a modified set of candidate facet attribute relationships based, at least in part, on the pervasiveness of the facet attribute relationship by: determining whether to include the first facet attribute relationship between the first and third facet attributes in the modified set of candidate facet attribute relationships based on a prevalence of a relationship between the first and third facet attributes in the identified plurality of concept relationships.