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VLDB
2004
ACM
111views Database» more  VLDB 2004»
14 years 1 months ago
Lifting the Burden of History from Adaptive Query Processing
Adaptive query processing schemes attempt to reoptimize query plans during the course of query execution. A variety of techniques for adaptive query processing have been proposed,...
Amol Deshpande, Joseph M. Hellerstein
SIGMETRICS
2010
ACM
129views Hardware» more  SIGMETRICS 2010»
13 years 3 months ago
From traffic matrix to routing matrix: PoP level traffic characteristics for a Tier-1 ISP
Traffic matrices play a pivotal role in the management of an ISP's network such as various levels of traffic engineering and capacity planning. However, it is unclear how the...
Vijay Kumar Adhikari, Sourabh Jain, Zhi-Li Zhang
FOCS
2008
IEEE
14 years 2 months ago
Size Bounds and Query Plans for Relational Joins
Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive and very often domi...
Albert Atserias, Martin Grohe, Dániel Marx
ICRA
2009
IEEE
131views Robotics» more  ICRA 2009»
13 years 6 months ago
Efficient C-space and cost function updates in 3D for unmanned aerial vehicles
When operating in partially-known environments, autonomous vehicles must constantly update their maps and plans based on new sensor information. Much focus has been placed on devel...
Sebastian Scherer, Dave Ferguson, Sanjiv Singh
IJRR
2011
218views more  IJRR 2011»
13 years 3 months ago
Motion planning under uncertainty for robotic tasks with long time horizons
Abstract Partially observable Markov decision processes (POMDPs) are a principled mathematical framework for planning under uncertainty, a crucial capability for reliable operation...
Hanna Kurniawati, Yanzhu Du, David Hsu, Wee Sun Le...