15. The apparatus of claim 14 , wherein the program is further configured to track relative occurrences of a plurality of variants of the term found in the plurality of documents.
15. The apparatus of claim 14 , wherein the program is further configured to track relative occurrences of a plurality of variants of the term found in the plurality of documents. 19. The apparatus of claim 15 , wherein the program is configured to track relative occurrences of each variant by weighting occurrences based upon locations of such occurrences within the plurality of documents.