Sciweavers

FOCS
2003
IEEE
13 years 9 months ago
Clustering with Qualitative Information
We consider the problem of clustering a collection of elements based on pairwise judgments of similarity and dissimilarity. Bansal, Blum and Chawla (in: Proceedings of 43rd FOCS, ...
Moses Charikar, Venkatesan Guruswami, Anthony Wirt...
FOCS
2003
IEEE
13 years 9 months ago
On Levels in Arrangements of Curves, II: A Simple Inequality and Its Consequences
We give a surprisingly short proof that in any planar arrangement of Ò curves where each pair intersects at most a fixed number (×) of times, the -level has subquadratic (Ç´...
Timothy M. Chan
FOCS
2003
IEEE
13 years 9 months ago
Paths, Trees, and Minimum Latency Tours
We give improved approximation algorithms for a variety of latency minimization problems. In particular, we give a 3.591 -approximation to the minimum latency problem, improving o...
Kamalika Chaudhuri, Brighten Godfrey, Satish Rao, ...
FOCS
2003
IEEE
13 years 9 months ago
Learning DNF from Random Walks
We consider a model of learning Boolean functions from examples generated by a uniform random walk on {0, 1}n . We give a polynomial time algorithm for learning decision trees and...
Nader H. Bshouty, Elchanan Mossel, Ryan O'Donnell,...
FOCS
2003
IEEE
13 years 9 months ago
On Worst-Case to Average-Case Reductions for NP Problems
We show that if an NP-complete problem has a non-adaptive self-corrector with respect to a samplable distribution then coNP is contained in NP/poly and the polynomial hierarchy co...
Andrej Bogdanov, Luca Trevisan
FOCS
2003
IEEE
13 years 9 months ago
Approximation Algorithms for Orienteering and Discounted-Reward TSP
In this paper, we give the rst constant-factor approximationalgorithmfor the rooted Orienteering problem, as well as a new problem that we call the Discounted-Reward TSP, motivate...
Avrim Blum, Shuchi Chawla, David R. Karger, Terran...
FOCS
2003
IEEE
13 years 9 months ago
Instability of FIFO at Arbitrarily Low Rates in the Adversarial Queueing Model
We study the stability of the commonly used packet forwarding protocol, FIFO (First In First Out), in the adversarial queueing model. We prove that FIFO can become unstable, i.e.,...
Rajat Bhattacharjee, Ashish Goel
FOCS
2003
IEEE
13 years 9 months ago
The Cost of Cache-Oblivious Searching
This paper gives tight bounds on the cost of cache-oblivious searching. The paper shows that no cache-oblivious search structure can guarantee a search performance of fewer than l...
Michael A. Bender, Gerth Stølting Brodal, R...
FOCS
2003
IEEE
13 years 9 months ago
Lower Bounds for Non-Black-Box Zero Knowledge
We show new lower bounds and impossibility results for general (possibly non-black-box) zero-knowledge proofs and arguments. Our main results are that, under reasonable complexity...
Boaz Barak, Yehuda Lindell, Salil P. Vadhan