9. The apparatus of claim 1 , wherein the established model stored in memory is further associated with a set of conditions or thresholds.
9. The apparatus of claim 1 , wherein the established model stored in memory is further associated with a set of conditions or thresholds. 11. The method of claim 9 , wherein the set of conditions or thresholds includes a length of the string in which a threshold number of times one of the features is found in the string satisfied.