一种新的高效Apriori算法。提出一种使用先验算法产生频繁2项目集，并给出一种简单有效的逐步缩减交易数据库的方法，加快了频繁k项目集的验证速度。-To solve the bottleneck of the apriori algorithm,a new method to generate the 2-frequent item sets is put forword. To accelerate the verification speed of the k-frequent item s