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» Polynomial Time Approximation Schemes and Parameterized Comp...
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163
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STOC
2000
ACM
137views Algorithms» more  STOC 2000»
15 years 7 months ago
On the complexity of verifiable secret sharing and multiparty computation
We first study the problem of doing Verifiable Secret Sharing (VSS) information theoretically secure for a general access structure. We do it in the model where private channels b...
Ronald Cramer, Ivan Damgård, Stefan Dziembow...
FOCS
2008
IEEE
15 years 10 months ago
Hardness of Minimizing and Learning DNF Expressions
We study the problem of finding the minimum size DNF formula for a function f : {0, 1}d → {0, 1} given its truth table. We show that unless NP ⊆ DTIME(npoly(log n) ), there i...
Subhash Khot, Rishi Saket
128
Voted
COCOON
2005
Springer
15 years 9 months ago
Interval Subset Sum and Uniform-Price Auction Clearing
Abstract. We study the interval subset sum problem (ISSP), a generalization of the classic subset-sum problem, where given a set of intervals, the goal is to choose a set of intege...
Anshul Kothari, Subhash Suri, Yunhong Zhou
122
Voted
WINE
2005
Springer
122views Economy» more  WINE 2005»
15 years 9 months ago
Walrasian Equilibrium: Hardness, Approximations and Tractable Instances
We study the complexity issues for Walrasian equilibrium in a special case of combinatorial auction, called single-minded auction, in which every participant is interested in only ...
Ning Chen, Atri Rudra
142
Voted
FOCS
2004
IEEE
15 years 7 months ago
Hardness of Approximating the Shortest Vector Problem in Lattices
Let p > 1 be any fixed real. We show that assuming NP RP, there is no polynomial time algorithm that approximates the Shortest Vector Problem (SVP) in p norm within a constant ...
Subhash Khot