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VLDB
1995
ACM
132views Database» more  VLDB 1995»
15 years 7 months ago
Coloring Away Communication in Parallel Query Optimization
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering and query rewrite (JOQR) followed by parallelization. We focus on t...
Waqar Hasan, Rajeev Motwani
UAI
2000
15 years 5 months ago
Probabilistic State-Dependent Grammars for Plan Recognition
Techniques for plan recognition under uncertainty require a stochastic model of the plangeneration process. We introduce probabilistic state-dependent grammars (PSDGs) to represen...
David V. Pynadath, Michael P. Wellman
SIGMOD
2007
ACM
124views Database» more  SIGMOD 2007»
16 years 4 months ago
Query suspend and resume
Suppose a long-running analytical query is executing on a database server and has been allocated a large amount of physical memory. A high-priority task comes in and we need to ru...
Badrish Chandramouli, Christopher N. Bond, Shivnat...
FOCS
2007
IEEE
15 years 10 months ago
Planning for Fast Connectivity Updates
Understanding how a single edge deletion can affect the connectivity of a graph amounts to finding the graph bridges. But when faced with d > 1 deletions, can we establish as ...
Mihai Patrascu, Mikkel Thorup
IROS
2006
IEEE
140views Robotics» more  IROS 2006»
15 years 9 months ago
Creating High-quality Roadmaps for Motion Planning in Virtual Environments
— Our goal is to create roadmaps that are particularly suited for motion planning in virtual environments. We use our Reachability Roadmap Method to compute an initial, resolutio...
Roland Geraerts, Mark H. Overmars