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» Tight lower bounds for the online labeling problem
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SODA
2003
ACM
133views Algorithms» more  SODA 2003»
13 years 9 months ago
Integrality ratio for group Steiner trees and directed steiner trees
The natural relaxation for the Group Steiner Tree problem, as well as for its generalization, the Directed Steiner Tree problem, is a flow-based linear programming relaxation. We...
Eran Halperin, Guy Kortsarz, Robert Krauthgamer, A...
TIT
2010
101views Education» more  TIT 2010»
13 years 2 months ago
Wideband fading channel capacity with training and partial feedback
We consider the capacity of a wideband fading channel with partial feedback, subject to an average power constraint. A doubly block Rayleigh fading model is assumed with finite co...
Manish Agarwal, Michael L. Honig
ADAEUROPE
2004
Springer
14 years 28 days ago
On the Tree Width of Ada Programs
The tree width of a graph G measures how close G is to being a tree or a series-parallel graph. Many well-known problems that are otherwise NP-complete can be solved efficiently if...
Bernd Burgstaller, Johann Blieberger, Bernhard Sch...
APPROX
2006
Springer
89views Algorithms» more  APPROX 2006»
13 years 11 months ago
Online Algorithms to Minimize Resource Reallocations and Network Communication
Abstract. In this paper, we consider two new online optimization problems (each with several variants), present similar online algorithms for both, and show that one reduces to the...
Sashka Davis, Jeff Edmonds, Russell Impagliazzo
CORR
2006
Springer
120views Education» more  CORR 2006»
13 years 7 months ago
On the Role of Shared Entanglement
Despite the apparent similarity between shared randomness and shared entanglement in the context of Communication Complexity, our understanding of the latter is not as good as of ...
Dmitry Gavinsky