[1]肖继海 崔晓红 陈俊杰.基于COFI-Tree的N-最有兴趣项目集挖掘算法[J].计算机技术与发展,2012,(03):99-102.
 XIAO Ji-hai,CUI Xiao-hong,CHEN Jun-jie.Mining N-Most Interesting Itemsets Algorithm Based on COFI-Tree[J].,2012,(03):99-102.
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基于COFI-Tree的N-最有兴趣项目集挖掘算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2012年03期
页码:
99-102
栏目:
智能、算法、系统工程
出版日期:
1900-01-01

文章信息/Info

Title:
Mining N-Most Interesting Itemsets Algorithm Based on COFI-Tree
文章编号:
1673-629X(2012)03-0099-04
作者:
肖继海1 崔晓红1 陈俊杰2
[1]太原理工大学[2]太原理工大学
Author(s):
XIAO Ji-haiCUI Xiao-hongCHEN Jun-jie
[1]Taiyuan University of Technology[2]Taiyuan University of Technology
关键词:
数据挖掘关联规则N-最有兴趣项目集FP-TreeCOFI-Tree
Keywords:
data mining association rules N-most interesting itemsets FP-Tree COFI-Tree
分类号:
TP311.13
文献标志码:
A
摘要:
BOMO算法采用递归构造条件子树,在挖掘大数据集时耗时较长,执行效率低,为了解决这一不足,文中给出一种基于COFI-Tree的挖掘N-最有兴趣项目集算法。算法采用COFI-Tree结构,无需递归构造条件子树FP-Tree,在同一时间内只有一个COFI-Tree在内存,并且有效地减少了其运算时间。通过对两种算法进行对比分析,实验结果得出:该算法比BOMO算法程序执行时间明显缩短;在挖掘大数据集时执行效率显著提高,尤其是k〈4时,性能最好。由此可见,改进后的算法是可行有效的
Abstract:
BOMO algorithm constructs conditional FP-Tree recursively so that it requires more memory and CPU resources.To solve this problem,an algorithm for mining N-most interesting itemsets based on COFI-Tree is presented.This algorithm adopts COFI-Tree.COFI-Tree doesn't need to construct conditional FP-Tree recursively and there is only one COFI-Tree in memory at a time.Experiment shows that the algorithm based on COFI-Tree performs faster than current best algorithm BOMO;The algorithm has good performance for large data set,especially it shows the best when for k value is smaller than 4.This shows that the improved algorithm is feasible and effective

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备注/Memo

备注/Memo:
山西省自然科学基金资助项目(2007011050)肖继海(1978-),男,山西朔州人,讲师,硕士,研究方向为数据库、网络多媒体;陈俊杰,教授,博士生导师,研究方向为数据库、网络多媒体
更新日期/Last Update: 1900-01-01