928 search results - page 94 / 186 » Analysis and optimization of active databases |
KDD
2005
ACM
15 years 10 months ago
2005
ACM
We present an algorithm for mining tree-shaped patterns in a large graph. Novel about our class of patterns is that they can contain constants, and can contain existential nodes w...
VLDB
2004
ACM
15 years 3 months ago
2004
ACM
When query optimizers erroneously assume that database columns are statistically independent, they can underestimate the selectivities of conjunctive predicates by orders of magni...
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EDBT
2011
ACM
14 years 1 months ago
2011
ACM
Equi-depth histograms represent a fundamental synopsis widely used in both database and data stream applications, as they provide the cornerstone of many techniques such as query ...
TJS
2002
14 years 9 months ago
2002
Although it is increasingly difficult for large scientific programs to attain a significant fraction of peak performance on systems based on microprocessors with substantial instr...
CORR
2008
Springer
14 years 10 months ago
2008
Springer
: In this paper we consider two problems regarding the scheduling of available personnel in order to perform a given quantity of work, which can be arbitrarily decomposed into a se...