数据挖掘(DATAMINING)被认为是解决“数据爆炸”和“数据丰富,信息贫乏(DATARICHANDINFORMA－TIONPOOR)”的一种有效方法.关联规则(ASSOCIATIONRULES)是数据挖掘的重要研究内容.提出了多层次关联规则的挖掘算法??AR＿SET,利用集合“或”、“与”运算求解频繁模式(FREQUENTITEMSET),提高了挖掘的效率和速度.实验结果表明,算法AR＿SET是有效的,并对AR＿SET算法的几个变种进行了讨论.“,”Data mining is recognized as an efficient method for solving Data _Explosion and Data Rich and Information Poor. Mining association rules is one of the important aspects of data mining. The mining algorithm AR _SET for multiple _level association rules is given in this paper. The algorithm calculates the frequent itemsets by set operation??Union and Disjoin, and speeds up the mining. The experiments show that AR _SET is efficient. Also, some variants of AR _SET are discussed.