说明：  Apriory算法是数据挖掘中常用的挖掘初始数据的算法，传统的apriory算法在大数据的情况下实现效率很低，我通过java中的hash结构进行了改进，将效率提高。
(Apriory data mining algorithms commonly used in the initial data mining algorithms, the traditional apriory inefficient algorithm in the case of large data, I have been improved through the java hash structure will improve efficiency.)