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SODA
2012
ACM
217views Algorithms» more  SODA 2012»
12 years 6 days ago
Deterministic construction of an approximate M-ellipsoid and its applications to derandomizing lattice algorithms
We give a deterministic O(log n)n -time and space algorithm for the Shortest Vector Problem (SVP) of a lattice under any norm, improving on the previous best deterministic nO(n) -...
Daniel Dadush, Santosh Vempala
DISOPT
2006
155views more  DISOPT 2006»
13 years 9 months ago
Cyclical scheduling and multi-shift scheduling: Complexity and approximation algorithms
We consider the multiple shift scheduling problem modelled as a covering problem. Such problems are characterized by a constraint matrix that has in every column blocks of consecu...
Dorit S. Hochbaum, Asaf Levin
CORR
2007
Springer
131views Education» more  CORR 2007»
13 years 9 months ago
Approximation Algorithms for Multiprocessor Scheduling under Uncertainty
Motivated by applications in grid computing and projects management, we study multiprocessor scheduling in scenarios where there is uncertainty in the successful execution of jobs...
Guolong Lin, Rajmohan Rajaraman
JCO
2007
128views more  JCO 2007»
13 years 9 months ago
Approximation algorithms and hardness results for labeled connectivity problems
Let G = (V, E) be a connected multigraph, whose edges are associated with labels specified by an integer-valued function L : E → N. In addition, each label ℓ ∈ N has a non-...
Refael Hassin, Jérôme Monnot, Danny S...
ICC
2009
IEEE
140views Communications» more  ICC 2009»
13 years 7 months ago
Approximation Algorithms for Traffic Grooming in WDM Rings
Abstract-- This paper addresses the problem of traffic grooming in WDM rings in which all traffic emanates from a single node and all other nodes are destination nodes. This "...
Kevin Corcoran, Seth Flaxman, Mark Neyer, Peter Sc...