摘要
项目加权关联规则挖掘中,权值反映了数据的重要程度,权值对项目支持度有加强或减弱作用.通过比较M INWAL(O)、M INWAL(W)等加权关联规则挖掘模型,分析了权值对加权关联规则挖掘产生的影响,并针对M INWAL(W)模型在加权候选频繁项目集剪枝方面存在的不足,利用支持度下界对剪枝策略进行了改进,从而有效地减少挖掘过程的计算量.
In the Weighted association rule mining,the weights of transaction items reflect the importance of items to the user,different data weights can increase or decrease applicability and accuracy of the support measure.This paper makes a comparision of some different weighted association rule mining models such as MINWAL(O),MINWAL(W) and so on,it analyses the effect of the weights of transaction items.Based on the disadvantages of MINWAL(W),it brings forword improving method to prune the candidate itemsets with the lower Support bound.
出处
《闽江学院学报》
2009年第5期76-79,共4页
Journal of Minjiang University
基金
福建省教育厅科技规划项目(JA08179)
关键词
关联规则
权值
模型
分析
association rules
weights
model
analyse