14. The non-transitory computer-readable memory device of claim 13 , where the instructions further comprise: one or more instructions to normalize the generated term vector for each document in the first set of documents; one or more instructions to normalize the generated term vector for each document in the second set of documents; and one or more instructions to create, based on normalizing the generated term vector for each document in the first set of documents and normalizing the generated term vector for each document in the second set of documents, a composite term vector.
16. The non-transitory computer-readable memory device of claim 14 , where the one or more instructions include: one or more instructions to modify the composite term vector to exclude at least one of the first quantity of terms or the second quantity of terms that does not satisfy a particular threshold value.