14. The system of claim 10 , wherein the step of determining frequent itemsets comprises the steps of: generating an array of counts of occurrences of multiple types of items or events in the same data entry.
14. The system of claim 10 , wherein the step of determining frequent itemsets comprises the steps of: generating an array of counts of occurrences of multiple types of items or events in the same data entry. 15. The system of claim 14 , wherein the array of counts of occurrences of multiple types of items or events in the same data entry includes only a portion of the occurrences, wherein the occurrences included in the portion occur more frequently than do the occurrences not included in the portion.