Anti-Skew Counting Partition
AS-CPA - Use techniques to improve partitioning by reducing number of false candidate
Early local pruning: Candidates must be not only local large 1-itemsets, but must also be large 1-itemsets in the union of all partitions examined so far (Note: any large itemset must be a large itemset in ANY partition)
First Global Anti-Skew: Remove possibly false global candidate itemsets during first scan
Second Global Anti-Skew: Removes false global candidates during second pass