Sciweavers

5757 search results - page 974 / 1152
» Dynamic Policy Programming
Sort
View
SIGMOD
2009
ACM
291views Database» more  SIGMOD 2009»
14 years 9 months ago
Partial join order optimization in the paraccel analytic database
The ParAccel Analytic DatabaseTM is a fast shared-nothing parallel relational database system with a columnar orientation, adaptive compression, memory-centric design, and an enha...
Yijou Chen, Richard L. Cole, William J. McKenna, S...
SIGMOD
2004
ACM
142views Database» more  SIGMOD 2004»
14 years 9 months ago
Conditional Selectivity for Statistics on Query Expressions
Cardinality estimation during query optimization relies on simplifying assumptions that usually do not hold in practice. To diminish the impact of inaccurate estimates during opti...
Nicolas Bruno, Surajit Chaudhuri
PODS
2002
ACM
138views Database» more  PODS 2002»
14 years 9 months ago
Fast Algorithms For Hierarchical Range Histogram Construction
Data Warehousing and OLAPapplications typically view data as having multiple logical dimensions e.g., product, location with natural hierarchies de ned on each dimension. OLAP que...
Sudipto Guha, Nick Koudas, Divesh Srivastava
EDBT
2008
ACM
150views Database» more  EDBT 2008»
14 years 9 months ago
Cost-based query optimization for complex pattern mining on multiple databases
For complex data mining queries, query optimization issues arise, similar to those for the traditional database queries. However, few works have applied the cost-based query optim...
Ruoming Jin, David Fuhry, Abdulkareem Alali
ICSE
2004
IEEE-ACM
14 years 9 months ago
Automated Support for Development, Maintenance, and Testing in the Presence of Implicit Control Flow
Although object-oriented languages can improve programming practices, their characteristics may introduce new problems for software engineers. One important problem is the presenc...
Saurabh Sinha, Alessandro Orso, Mary Jean Harrold