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FOCS
2006
IEEE
15 years 4 months ago
2006
IEEE
Given an undirected hypergraph and a subset of vertices S ⊆ V with a specified root vertex r ∈ S, the STEINER ROOTED-ORIENTATION problem is to find an orientation of all the...
FOCS
2006
IEEE
15 years 4 months ago
2006
IEEE
We convert cell-probe lower bounds for polynomial space into stronger lower bounds for near-linear space. Our technique applies to any lower bound proved through the richness meth...
FOCS
2006
IEEE
15 years 4 months ago
2006
IEEE
We consider approximation algorithms for non-uniform buy-at-bulk network design problems. The first nontrivial approximation algorithm for this problem is due to Charikar and Kar...
FOCS
2006
IEEE
15 years 1 months ago
2006
IEEE
We consider random 3CNF formulas with n variables and m clauses. It is well known that when m > cn (for a sufficiently large constant c), most formulas are not satisfiable. How...
FOCS
2006
IEEE
15 years 4 months ago
2006
IEEE
Lossless condensers are unbalanced expander graphs, with expansion close to optimal. Equivalently, they may be viewed as functions that use a short random seed to map a source on ...