Sciweavers

FOCS
2009
IEEE
14 years 5 months ago
Constructing Small-Bias Sets from Algebraic-Geometric Codes
We give an explicit construction of an -biased set over k bits of size O k 2 log(1/ ) 5/4 . This improves upon previous explicit constructions when is roughly (ignoring logarith
Avraham Ben-Aroya, Amnon Ta-Shma
FOCS
2009
IEEE
14 years 5 months ago
Approximating Minimum Cost Connectivity Problems via Uncrossable Bifamilies and Spider-Cover Decompositions
Abstract— We give approximation algorithms for the Generalized Steiner Network (GSN) problem. The input consists of a graph
Zeev Nutov
FOCS
2009
IEEE
14 years 5 months ago
Dynamic and Non-uniform Pricing Strategies for Revenue Maximization
We consider the Item Pricing problem for revenue maximization in the limited supply setting, where a single seller with n items caters to m buyers with unknown subadditive valuati...
Tanmoy Chakraborty, Zhiyi Huang, Sanjeev Khanna
FOCS
2009
IEEE
14 years 5 months ago
Instance-Optimal Geometric Algorithms
We prove the existence of an algorithm A for computing 2-d or 3-d convex hulls that is optimal for every point set in the following sense: for every set S of n points and for ever...
Peyman Afshani, Jérémy Barbay, Timot...
FOCS
2009
IEEE
14 years 5 months ago
Higher Eigenvalues of Graphs
— We present a general method for proving upper bounds on the eigenvalues of the graph Laplacian. In particular, we show that for any positive integer k, the kth smallest eigenva...
Jonathan A. Kelner, James R. Lee, Gregory N. Price...
FOCS
2009
IEEE
14 years 5 months ago
Resolving the Simultaneous Resettability Conjecture and a New Non-Black-Box Simulation Strategy
Canetti, Goldreich, Goldwasser, and Micali (STOC 2000) introduced the notion of resettable zeroknowledge proofs, where the protocol must be zero-knowledge even if a cheating veriï...
Yi Deng, Vipul Goyal, Amit Sahai
FOCS
2009
IEEE
14 years 5 months ago
On the Power of Randomization in Algorithmic Mechanism Design
In many settings the power of truthful mechanisms is severely bounded. In this paper we use randomization to overcome this problem. In particular, we construct an FPTAS for multi-...
Shahar Dobzinski, Shaddin Dughmi
FOCS
2009
IEEE
14 years 5 months ago
Local Graph Partitions for Approximation and Testing
—We introduce a new tool for approximation and testing algorithms called partitioning oracles. We develop methods for constructing them for any class of bounded-degree graphs wit...
Avinatan Hassidim, Jonathan A. Kelner, Huy N. Nguy...
FOCS
2009
IEEE
14 years 5 months ago
Improved Approximation Algorithms for PRIZE-COLLECTING STEINER TREE and TSP
Aaron Archer, MohammadHossein Bateni, Mohammad Tag...