摘要
商空间理论是研究不同粒度世界的一种新的数学工具。它用三元组(X,f,Т)描述一个问题,其中X表示问题的论域,f(·)是论域属性,Т是论域的结构。通过分析求解问题(X,f,Т),对论域X及其有关的结构、属性进行深入分析和研究,从而完成不同粒度世界的描述,并有着完整的理论基础。该文首次将商空间粒度理论应用于对数据仓库中数据进行了粒度分析,取得了很好的确定结果。
The theory of the quotient space is a new mathematical tool f or the study of the different granularity world.It uses a three dimensional ar ray(X,f,T)to describe a problem,among which X stands for the domain of the problem,f for the attribute of the domain,and T for the structure of the domai n.The analysis and solution of the problem(X,f,T),along with the further a nalysis and study of the domain and its structure and attribute,help to the des cription of the different granularity world based upon the complete theory.Thi s paper firstly focuses on the application of this theory through the granularit y analysis of the data warehouse,which has successfully come to the definite r esult of different granularity.
出处
《计算机工程与应用》
CSCD
北大核心
2003年第17期47-49,60,共4页
Computer Engineering and Applications
基金
国家自然科学基金(编号:60135010)
安徽省教育厅自然科学研究基金(编号:2002kj002)
关键词
粒度
商空间
结构
数据仓库
granularity,quotient space,struct ure,data warehouse
