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» Properties of Synthetic Optimization Problems
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ICDE
2004
IEEE
137views Database» more  ICDE 2004»
14 years 11 months ago
Selectivity Estimation for XML Twigs
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
Neoklis Polyzotis, Minos N. Garofalakis, Yannis E....
SIGMOD
2005
ACM
143views Database» more  SIGMOD 2005»
14 years 10 months ago
Holistic Aggregates in a Networked World: Distributed Tracking of Approximate Quantiles
While traditional database systems optimize for performance on one-shot queries, emerging large-scale monitoring applications require continuous tracking of complex aggregates and...
Graham Cormode, Minos N. Garofalakis, S. Muthukris...
SIGMOD
2001
ACM
108views Database» more  SIGMOD 2001»
14 years 10 months ago
PREFER: A System for the Efficient Execution of Multi-parametric Ranked Queries
Users often need to optimize the selection of objects by appropriately weighting the importance of multiple object attributes. Such optimization problems appear often in operation...
Vagelis Hristidis, Nick Koudas, Yannis Papakonstan...
CF
2010
ACM
14 years 3 months ago
Load balancing using dynamic cache allocation
Supercomputers need a huge budget to be built and maintained. To maximize the usage of their resources, application developers spend time to optimize the code of the parallel appl...
Miquel Moretó, Francisco J. Cazorla, Rizos ...
DLOG
2006
13 years 11 months ago
Tableau Caching for Description Logics with Inverse and Transitive Roles
Abstract. Modern description logic (DL) reasoners are known to be less efficient for DLs with inverse roles. The current loss of performance is largely due to the missing applicabi...
Yu Ding, Volker Haarslev