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Dynamic Construction of User Defined Virtual Cubes

  • Dehui Zhang
  • Shaohua Tan
  • Dongqing Yang
  • Shiwei Tang
  • Xiuli Ma
  • Lizheng Jiang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4032)

Abstract

OLAP provides an efficient way for business data analysis. However, most up-to-date OLAP tools often make the analysts lost in the sea of data while the analysts usually focus their interest on a subset of the whole dataset. Unfortunately, OLAP operators are usually not capsulated within the subset. What’s more, the users’ interests often arise in an impromptu way after the user getting some information from the data. In this paper, we give the definition of users’ interests and propose the user-defined virtual cubes to solve this problem. At the same time, we present an algorithm to answer the queries upon virtual cube. All the OLAP operators will be encapsulated within this virtual cube without superfluous information retrieved. Experiments show the effectiveness and efficiency of the virtual cube mechanism.

Keywords

Greedy Algorithm User Interest Data Cube Query Response Time Storage Constraint 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Dehui Zhang
    • 1
  • Shaohua Tan
    • 1
  • Dongqing Yang
    • 2
  • Shiwei Tang
    • 1
    • 2
  • Xiuli Ma
    • 1
  • Lizheng Jiang
    • 2
  1. 1.National Laboratory on Machine Perception, School of Electronics Engineering, and Computer SciencePeking UniversityBeijingChina
  2. 2.School of Electronics Engineering and Computer SciencePeking UniversityBeijingChina

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