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» Bringing Order to Query Optimization
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ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
13 years 12 months ago
Multiple Range Query Optimization in Spatial Databases
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
Apostolos Papadopoulos, Yannis Manolopoulos
MICCAI
2010
Springer
13 years 6 months ago
3D Knowledge-Based Segmentation Using Pose-Invariant Higher-Order Graphs
Segmentation is a fundamental problem in medical image analysis. The use of prior knowledge is often considered to address the ill-posedness of the process. Such a process consists...
Chaohui Wang, Olivier Teboul, Fabrice Michel, Salm...
ICWS
2009
IEEE
14 years 4 months ago
Selective Querying for Adapting Hierarchical Web Service Compositions Using Aggregate Volatility
Environments in which Web service compositions (WSC) operate are often dynamic. We address the problem of which service to query for up-to-date information in order to adapt a hie...
John Harney, Prashant Doshi
ICDE
2008
IEEE
147views Database» more  ICDE 2008»
14 years 9 months ago
Flow Algorithms for Parallel Query Optimization
In this paper we address the problem of minimizing the response time of a multi-way join query using pipelined (inter-operator) parallelism, in a parallel or a distributed environ...
Amol Deshpande, Lisa Hellerstein
ICWE
2005
Springer
14 years 1 months ago
A Model-Driven Approach for Designing Distributed Web Information Systems
There is an apparent need for specifying the integration of multiple knowledge sources during the design of Web Information Systems (WIS) where the actual data is often retrieved f...
Richard Vdovjak, Geert-Jan Houben