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» Tracking Join and Self-Join Sizes in Limited Storage
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PODS
1999
ACM
121views Database» more  PODS 1999»
13 years 9 months ago
Tracking Join and Self-Join Sizes in Limited Storage
Query optimizers rely on fast, high-quality estimates of result sizes in order to select between various join plans. Selfjoin sizes of relations provide bounds on the join size of...
Noga Alon, Phillip B. Gibbons, Yossi Matias, Mario...
STOC
2007
ACM
142views Algorithms» more  STOC 2007»
14 years 5 months ago
Lower bounds for randomized read/write stream algorithms
Motivated by the capabilities of modern storage architectures, we consider the following generalization of the data stream model where the algorithm has sequential access to multi...
Paul Beame, T. S. Jayram, Atri Rudra
ICPP
1990
IEEE
13 years 9 months ago
Reducing Memory and Traffic Requirements for Scalable Directory-Based Cache Coherence Schemes
As multiprocessors are scaled beyond single bus systems, there is renewed interest in directory-based cache coherence schemes. These schemes rely on a directory to keep track of a...
Anoop Gupta, Wolf-Dietrich Weber, Todd C. Mowry
MOBICOM
2000
ACM
13 years 9 months ago
A scalable location service for geographic ad hoc routing
GLS is a new distributed location service which tracks mobile node locations. GLS combined with geographic forwarding allows the construction of ad hoc mobile networks that scale ...
Jinyang Li, John Jannotti, Douglas S. J. De Couto,...