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2009
ACM
120views Algorithms» more  STOC 2009»
15 years 10 months ago
A constant-factor approximation for stochastic Steiner forest
We consider the stochastic Steiner forest problem: suppose we were given a collection of Steiner forest instances, and were guaranteed that a random one of these instances would a...
Anupam Gupta, Amit Kumar
STOC
2009
ACM
172views Algorithms» more  STOC 2009»
15 years 10 months ago
Linear time approximation schemes for the Gale-Berlekamp game and related minimization problems
We design a linear time approximation scheme for the GaleBerlekamp Switching Game and generalize it to a wider class of dense fragile minimization problems including the Nearest C...
Marek Karpinski, Warren Schudy
STOC
2009
ACM
143views Algorithms» more  STOC 2009»
15 years 10 months ago
Affine dispersers from subspace polynomials
An affine disperser over Fn 2 for sources of dimension d is a function f : Fn 2 F2 such that for any affine space S Fn 2 of dimension at least d, we have {f(s) : s S} = F2. Aff...
Eli Ben-Sasson, Swastik Kopparty
STOC
2009
ACM
146views Algorithms» more  STOC 2009»
15 years 10 months ago
Conditional hardness for satisfiable 3-CSPs
In this paper we study a fundamental open problem in the area of probabilistic checkable proofs: What is the smallest s such that NP naPCP1,s[O(log n), 3]? In the language of har...
Ryan O'Donnell, Yi Wu
STOC
2009
ACM
238views Algorithms» more  STOC 2009»
15 years 10 months ago
On the convergence of regret minimization dynamics in concave games
We study a general sub-class of concave games, which we call socially concave games. We show that if each player follows any no-external regret minimization procedure then the dyn...
Eyal Even-Dar, Yishay Mansour, Uri Nadav