18 search results - page 2 / 4 » Integrality Gaps of Linear and Semi-definite Programming Rel... |
COCO
2007
Springer
13 years 11 months ago
2007
Springer
We study semidefinite programming relaxations of Vertex Cover arising from repeated applications of the LS+ “lift-and-project” method of Lovasz and Schrijver starting from th...
FOCS
2005
IEEE
13 years 11 months ago
2005
IEEE
We give a general technique to obtain approximation mechanisms that are truthful in expectation. We show that for packing domains, any α-approximation algorithm that also bounds ...
ICALP
2003
Springer
13 years 10 months ago
2003
Springer
We consider requests for capacity in a given tree network T = (V, E) where each edge of the tree has some integer capacity ue. Each request consists of an integer demand df and a ...
SODA
2010
ACM
14 years 2 months ago
2010
ACM
The hypergraph matching problem is to find a largest collection of disjoint hyperedges in a hypergraph. This is a well-studied problem in combinatorial optimization and graph theo...
STOC
2009
ACM
14 years 5 months ago
2009
ACM
We study the Sherali-Adams lift-and-project hierarchy of linear programming relaxations of the matching polytope. Our main result is an asymptotically tight expression 1 + 1/k for...