12. The system of claim 5 , wherein at least one rule comprises a weight representing the calculated percentage of a plurality of product descriptions correctly categorized with the at least one rule.
12. The system of claim 5 , wherein at least one rule comprises a weight representing the calculated percentage of a plurality of product descriptions correctly categorized with the at least one rule. 13. The system of claim 12 , wherein a value of the weight is inversely proportional to the calculated percentage of the plurality of product descriptions correctly categorized with the at least one rule.