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» Exponential-Time Approximation of Hard Problems
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ESA
2009
Springer
129views Algorithms» more  ESA 2009»
15 years 4 months ago
Constant Ratio Fixed-Parameter Approximation of the Edge Multicut Problem
Abstract. The input of the Edge Multicut problem consists of an undirected graph G and pairs of terminals {s1, t1}, . . . , {sm, tm}; the task is to remove a minimum set of edges s...
Dániel Marx, Igor Razgon
ECCC
2010
78views more  ECCC 2010»
14 years 10 months ago
PCPs and the Hardness of Generating Synthetic Data
Assuming the existence of one-way functions, we show that there is no polynomial-time, differentially private algorithm A that takes a database D ({0, 1}d )n and outputs a "...
Jonathan Ullman, Salil P. Vadhan
ALMOB
2006
97views more  ALMOB 2006»
14 years 10 months ago
The approximability of the String Barcoding problem
The String Barcoding (SBC) problem, introduced by Rash and Gusfield (RECOMB, 2002), consists in finding a minimum set of substrings that can be used to distinguish between all mem...
Giuseppe Lancia, Romeo Rizzi
ISAAC
2004
Springer
107views Algorithms» more  ISAAC 2004»
15 years 3 months ago
On the Hardness and Easiness of Random 4-SAT Formulas
Assuming 3-SAT formulas are hard to refute with high probability, Feige showed approximation hardness results, among others for the max bipartite clique. We extend this result in t...
Andreas Goerdt, André Lanka
COCO
2011
Springer
261views Algorithms» more  COCO 2011»
13 years 9 months ago
Hardness of Max-2Lin and Max-3Lin over Integers, Reals, and Large Cyclic Groups
—In 1997, H˚astad showed NP-hardness of (1 − , 1/q + δ)-approximating Max-3Lin(Zq); however it was not until 2007 that Guruswami and Raghavendra were able to show NP-hardness...
Ryan O'Donnell, Yi Wu, Yuan Zhou