Sciweavers

FOCS
2008
IEEE
14 years 6 months ago
Linear Level Lasserre Lower Bounds for Certain k-CSPs
We show that for k ≥ 3 even the Ω(n) level of the Lasserre hierarchy cannot disprove a random k-CSP instance over any predicate type implied by k-XOR constraints, for example ...
Grant Schoenebeck
FOCS
2008
IEEE
14 years 6 months ago
On the Union of Cylinders in Three Dimensions
We show that the combinatorial complexity of the union of n infinite cylinders in R3 , having arbitrary radii, is O(n2+ε ), for any ε > 0; the bound is almost tight in the w...
Esther Ezra
FOCS
2008
IEEE
14 years 6 months ago
Algorithmic Barriers from Phase Transitions
Dimitris Achlioptas, Amin Coja-Oghlan
FOCS
2008
IEEE
14 years 6 months ago
Learning Geometric Concepts via Gaussian Surface Area
We study the learnability of sets in Rn under the Gaussian distribution, taking Gaussian surface area as the “complexity measure” of the sets being learned. Let CS denote the ...
Adam R. Klivans, Ryan O'Donnell, Rocco A. Servedio
FOCS
2008
IEEE
14 years 6 months ago
Almost-Natural Proofs
Razborov and Rudich have shown that so-called natural proofs are not useful for separating P from NP unless hard pseudorandom number generators do not exist. This famous result is...
Timothy Y. Chow
FOCS
2008
IEEE
14 years 6 months ago
Succincter
Mihai Patrascu
FOCS
2008
IEEE
14 years 6 months ago
Dynamic Connectivity: Connecting to Networks and Geometry
Dynamic connectivity is a well-studied problem, but so far the most compelling progress has been confined to the edge-update model: maintain an understanding of connectivity in a...
Timothy M. Chan, Mihai Patrascu, Liam Roditty
FOCS
2008
IEEE
14 years 6 months ago
Broadcasting with Side Information
Noga Alon, Eyal Lubetzky, Uri Stav, Amit Weinstein...
FOCS
2008
IEEE
14 years 6 months ago
Shallow-Low-Light Trees, and Tight Lower Bounds for Euclidean Spanners
We show that for every n-point metric space M and positive integer k, there exists a spanning tree T with unweighted diameter O(k) and weight w(T) = O(k · n1/k ) · w(MST(M)), an...
Yefim Dinitz, Michael Elkin, Shay Solomon