297 search results - page 58 / 60 » Polynomial heuristics for query optimization |
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
We consider the problem of collectively approximating a set of sensor signals using the least amount of space so that any individual signal can be efficiently reconstructed within...
DMDW
2000
13 years 9 months ago
2000
As views in a data warehouse become more complex, the view maintenance process can become very complicated and potentially very inefficient. Storing auxiliary views in the warehou...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
Given a set P of products, a set O of customers, and a product p P, a bichromatic reverse skyline query retrieves all the customers in O that do not find any other product in P t...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
DEXA
2005
Springer
14 years 1 months ago
2005
Springer
In contrast to alpha-numerical data, multimedia data can have a wide range of quality parameters such as spatial and temporal resolution, and compression format. Users can request ...