Sciweavers

4042 search results - page 224 / 809
» The EXODUS Optimizer Generator
Sort
View
CIKM
2001
Springer
15 years 11 months ago
Joint Optimization of Cost and Coverage of Query Plans in Data Integration
Existing approaches for optimizing queries in data integration use decoupled strategies–attempting to optimize coverage and cost in two separate phases. Since sources tend to ha...
Zaiqing Nie, Subbarao Kambhampati
ICDT
1999
ACM
97views Database» more  ICDT 1999»
15 years 10 months ago
Optimizing Large Join Queries in Mediation Systems
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
Ramana Yerneni, Chen Li, Jeffrey D. Ullman, Hector...
VLDB
1994
ACM
114views Database» more  VLDB 1994»
15 years 10 months ago
Including Group-By in Query Optimization
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
Surajit Chaudhuri, Kyuseok Shim
EUROPAR
2006
Springer
15 years 10 months ago
Optimization of Dense Matrix Multiplication on IBM Cyclops-64: Challenges and Experiences
Abstract. This paper presents a study of performance optimization of dense matrix multiplication on IBM Cyclops-64(C64) chip architecture. Although much has been published on how t...
Ziang Hu, Juan del Cuvillo, Weirong Zhu, Guang R. ...
GECCO
2010
Springer
184views Optimization» more  GECCO 2010»
15 years 9 months ago
A mono surrogate for multiobjective optimization
Most surrogate approaches to multi-objective optimization build a surrogate model for each objective. These surrogates can be used inside a classical Evolutionary Multiobjective O...
Ilya Loshchilov, Marc Schoenauer, Michèle S...