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 …
Total citations
200420052006200720082009201020112012201320142015201620172018201920202021202220237212624212014161512971012355344
Scholar articles