%0 Journal Article
%T Materialized Views Selection of Multi-Dimensional Data in Real-Time Active Data Warehouses<br>实时主动数据仓库中多维数据实视图的选择
%A LIN Zi-Yu
%A YANG Dong-Qing
%A SONG Guo-Jie
%A WANG Teng-Jiao
%A TANG Shi-Wei
%A <br>林子雨
%A 杨冬青
%A 宋国杰
%A 王腾蛟
%A 唐世渭
%J 软件学报
%D 2008
%I 
%X In this paper, data mining based on the log of active decision engine is introduced to find the CUBE using pattern of analysis rules, which can be used as important reference information for materialized views selection. Based on it, a 3A probability model is designed, and the greedy algorithm, called PGreedy (probability greedy), is proposed, which takes into account the probability distribution of CUBE. Also view keeping rule is adopted to achieve better performance for dynamic view adjusting. Experimental results show that PGreedy algorithm can achieve better performance than BPUS (benefit per unit space) algorithm in real-time active data warehouses environment.
%K view selection
%K materialized view
%K data warehouse
%K active decision engine
%K analysis rule
%K OLAP (online analytical processing)<br>视图选择
%K 实视图
%K 数据仓库
%K 主动决策引擎
%K 分析规则
%K 联机分析处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=E2A05B10ACA51318D5E6C389389A9892&yid=67289AFF6305E306&vid=2A8D03AD8076A2E3&iid=0B39A22176CE99FB&sid=DFEE4E8C33C95CEF&eid=C2F76551C0111538&journal_id=1000-9825&journal_name=软件学报&referenced_num=0&reference_num=17