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ATMOS
2010
128views Optimization» more  ATMOS 2010»
13 years 8 months ago
Robust Train Routing and Online Re-scheduling
Train Routing is a problem that arises in the early phase of the passenger railway planning process, usually several months before operating the trains. The main goal is to assign...
Alberto Caprara, Laura Galli, Leo G. Kroon, G&aacu...
WECWIS
2003
IEEE
102views ECommerce» more  WECWIS 2003»
14 years 2 months ago
FUSION: A System Allowing Dynamic Web Service Composition and Automatic Execution
Service portals are systems which expose a bundle of web services to the user, allowing the specification and subsequent execution of complex tasks defined over these individual...
Debra E. VanderMeer, Anindya Datta, Kaushik Dutta,...
SIGMOD
1993
ACM
150views Database» more  SIGMOD 1993»
14 years 1 months ago
Predicate Migration: Optimizing Queries with Expensive Predicates
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
Joseph M. Hellerstein, Michael Stonebraker
SIGMOD
2004
ACM
147views Database» more  SIGMOD 2004»
14 years 9 months ago
Robust Query Processing through Progressive Optimization
Virtually every commercial query optimizer chooses the best plan for a query using a cost model that relies heavily on accurate cardinality estimation. Cardinality estimation erro...
Volker Markl, Vijayshankar Raman, David E. Simmen,...
GIS
2006
ACM
14 years 10 months ago
Optimization of multiple continuous queries over streaming satellite data
Remotely sensed data, in particular satellite imagery, play many important roles in environmental applications and models. In particular applications that study (rapid) changes in...
Quinn Hart, Michael Gertz