[an error occurred while processing this directive]
   
 
���¿��ټ��� �߼�����
   ��ҳ  �ڿ�����  ��ί��  Ͷ��ָ��  �ڿ�����  ��������  �� �� ��  ��ϵ����
�������պ����ѧѧ�� 2004, Vol. 30 Issue (07) :610-613    DOI:
���� ����Ŀ¼ | ����Ŀ¼ | ������� | �߼����� << | >>
������ʵ�廯���Ŵ��㷨�����ʵ��
�����, ���*
�������պ����ѧ �����ѧԺ, ���� 100083
Design and implementation of materialized cubes genetic algorithm
Sun Huiqin, Xiong Zhang*
School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

ժҪ
�����
�������
Download: PDF (106KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
ժҪ ��ά�������ɻ���������ͻ���������ľۼ����������������.Ϊ��ʵʱ��Ӧ��ѯ,��ѯ�Ż��dz���Ҫ.��ά������ʵ�廯��һ�ֺܺõĽ������.�����������弯��ʵ�廯һ���ʵ����Ӽ�,����ϺõĿռ��ʱ���ƽ��,�����������ͼ��ѯƵ�ʲ�ͬ��Ҫ��.Ϊ��ʵ�廯һ�����ʵ��������Ӽ�,ͨ��������������,�����������ʵ�廯������ʽ�Ŵ��㷨.���㷨�������û�Ҫ����޶��Ĵ洢�ռ�Լ��������,�Ͽ�����ȫ�����Ž�.��ʵ�����,���㷨�������õ����ܺͿ��ٵ��������.
Service
�ѱ����Ƽ�������
�����ҵ����
�������ù�����
Email Alert
RSS
�����������
�ؼ����� ����   �Ŵ��㷨   ����������   �ﻯ��ͼ   ������������     
Abstract�� Multidimensional data cubes are composed of base cube and other cubes aggregating on base cube. Since response time should be small, query optimization is critical. Materializing multidimensional cubes is a good solution. Partial materialization gives some good tradeoffs between the storage space used and the average time to answer a query. In order to materialize an appropriate cube subset, a heuristic genetic algorithm was proposed. The algorithm can converge quickly and has the ability of optimizing globally in the condition of the given space. It can also satisfy the requirement of different query frequency of views. The experimental studies indicate that the genetic algorithm have good performance.
Keywords�� data   genetic algorithm   data cube   materialized views   on-line analytical processing     
Received 2003-02-20;
About author: �����(1973-),Ů,���Ͻ�����,��ʿ��, sunhq11@sina.com.
���ñ���:   
�����, ���.������ʵ�廯���Ŵ��㷨�����ʵ��[J]  �������պ����ѧѧ��, 2004,V30(07): 610-613
Sun Huiqin, Xiong Zhang.Design and implementation of materialized cubes genetic algorithm[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(07): 610-613
���ӱ���:  
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I07/610
Copyright 2010 by �������պ����ѧѧ��