10. The method recited in claim 6, further comprising: forming a second itemset by concatenating the large itemsets with a set of large items in accordance with a predetermined concatenation regime to generate a set of candidate itemsets, where an item is large if the support value of the item is greater than a minimum support value; arranging the candidate itemsets so that each item within an itemset which is also contained in the set of selected items precedes any item not in the set of selected items; and using the set of candidate itemsets to output the association rules.
11. The method recited in claim 10, the outputting association rules including pruning non-interesting association rules.