Apriori算法是一种找频繁项目集的基本算法。其基本原理是逐层搜索的迭代，直到不能找到维度更高的频繁项集为止。这种方法依赖连接和剪枝这两步来实现。-Apriori algorithm is a frequent itemsets to find the basic algorithm. The basic principle is that the iterative search step by step, until a higher dimension can not find frequent itemsets ending. This method relies on a connection and pruning to achieve these two steps.