6. The method of claim 2 , wherein the third predetermined condition is satisfied when the measure of intra-cluster homogeneity for a taxonomy layer exhibits a beginning of an asymptotic tail.
2. The method of claim 1 , wherein identifying a range of taxonomy layers comprises: identifying a first taxonomy layer having a measure of intra-cluster homogeneity that satisfies a second predetermined condition as a lower bound of the range; and identifying a second taxonomy layer having a measure of intra-cluster homogeneity that satisfies a third predetermined condition as an upper bound of the range.