Authors
Dong Xin, Jiawei Han, Xiaolei Li, Benjamin W Wah
Publication date
2003/1/1
Book
Proceedings 2003 VLDB Conference
Pages
476-487
Publisher
Morgan Kaufmann
Description
Publisher Summary
Data cube computation is one of the most essential but expensive operations in data warehousing. Previous studies have developed two major approaches, top-down vs. bottom-up. For efficient cube computation in various data distributions, this chapter proposes an interesting cube computation method, Star-Cubing, that integrates the strength of both top-down and bottom-up cube computation, and explores a few additional optimization techniques. It utilizes a star-tree structure, extends the simultaneous aggregation methods, and enables the pruning of the group-by's that do not satisfy the iceberg condition. The performance study shows that Star-Cubing is highly efficient and outperforms all the previous methods in almost all kinds of data distributions. Two optimization techniques are emphasized: (1) shared aggregation by taking advantage of shared dimensions among the current cuboid …
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Scholar articles
D Xin, J Han, X Li, BW Wah - Proceedings 2003 VLDB Conference, 2003