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103
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SIGMOD
1998
ACM
96views Database» more  SIGMOD 1998»
15 years 7 months ago
Approximate Medians and other Quantiles in One Pass and with Limited Memory
We present new algorithms for computing approximate quantiles of large datasets in a single pass. The approximation guarantees are explicit, and apply without regard to the value ...
Gurmeet Singh Manku, Sridhar Rajagopalan, Bruce G....
106
Voted
FMCAD
2006
Springer
15 years 6 months ago
Over-Approximating Boolean Programs with Unbounded Thread Creation
Abstract-- This paper describes a symbolic algorithm for overapproximating reachability in Boolean programs with unbounded thread creation. The fix-point is detected by projecting ...
Byron Cook, Daniel Kroening, Natasha Sharygina
CIAC
2010
Springer
282views Algorithms» more  CIAC 2010»
15 years 6 months ago
Improved Approximations for TSP with Simple Precedence Constraints
In this paper, we consider variants of the traveling salesman problem with precedence constraints. We characterize hard input instances for Christofides' algorithm and Hoogeve...
Hans-Joachim Boeckenhauer, Ralf Klasing, Tobias Mo...
109
Voted
APPROX
2010
Springer
160views Algorithms» more  APPROX 2010»
15 years 3 months ago
Proximity Algorithms for Nearly-Doubling Spaces
We introduce a new problem in the study of doubling spaces: Given a point set S and a target dimension d , remove from S the fewest number of points so that the remaining set has d...
Lee-Ad Gottlieb, Robert Krauthgamer
134
Voted
ICDE
2010
IEEE
227views Database» more  ICDE 2010»
16 years 2 months ago
Approximate Confidence Computation in Probabilistic Databases
Abstract-- This paper introduces a deterministic approximation algorithm with error guarantees for computing the probability of propositional formulas over discrete random variable...
Dan Olteanu, Jiewen Huang, Christoph Koch