For the positive association rule, after analyzing the character and the deficiency of the famous Apriori algorithm, we put forward an effective pruning algorithm to improve its efficiency.

• 对于第一种类型的关联规则，本文在分析研究了著名的提取频繁项集的先验算法的特征以及不足的基础上，提出了一种提高执行效率的剪枝算法；