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FOCS
2006
IEEE
14 years 2 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
14 years 2 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
14 years 2 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
14 years 13 days 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
14 years 2 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 ...