Besides , relativity analyses is introduced in the process of data pretreatment in this thesis , thereby canceled the disrelated attribute of data mining assignment , reduced lots of data sets and improves the accuracy and efficiency of rules mined 将相关性分析引入数据预处理过程，从而去除与挖掘任务不相关的属性，减少了数据集，提高了挖掘规则精度。
