Journal: SIGKDD Exploration Special Issue on Scalable Algorithms
In this paper, we propose the algorithm Pascal which introduces a novel optimization of the well-known algorithm Apriori. This optimization is based on a new strategy called pattern counting inference that relies on the concept of key patterns. We show that the support of frequent non-key patterns can be inferred from frequent key patterns without accessing the database. Experiments comparing Pascal to the three algorithms Apriori, Close and Max-Miner, show that Pascal is among the most efficient algorithms for mining frequent patterns.