359 search results - page 1 / 72 » On the Optimal Ordering of Maps and Selections under Factori... |
BNCOD
2006
13 years 6 months ago
2006
We examine the problem of producing the optimal evaluation order for queries containing joins, selections, and maps. Specifically, we look at the case where common subexpressions i...
ICDE
2005
IEEE
14 years 6 months ago
2005
IEEE
The query optimizer of a database system is confronted with two aspects when handling user-defined functions (UDFs) in query predicates: the vast differences in evaluation costs b...
BMCBI
2007
13 years 5 months ago
2007
Background: Cluster analysis has been widely applied for investigating structure in bio-molecular data. A drawback of most clustering algorithms is that they cannot automatically ...
CVPR
2008
IEEE
13 years 11 months ago
2008
IEEE
Second-order priors on the smoothness of 3D surfaces are a better model of typical scenes than first-order priors. However, stereo reconstruction using global inference algorithm...
COMPLEXITY
2004
13 years 4 months ago
2004
nical Abstract Optimization is to find the "best" solution to a problem where the quality of a solution can be measured by a given criterion. Estimation of Distribution A...