Sciweavers

52 search results - page 4 / 11
» Hyperbolic Programs, and Their Derivative Relaxations
Sort
View
TIT
2008
122views more  TIT 2008»
13 years 7 months ago
An Efficient Pseudocodeword Search Algorithm for Linear Programming Decoding of LDPC Codes
Abstract--In linear programming (LP) decoding of a low-density parity-check (LDPC) code one minimizes a linear functional, with coefficients related to log-likelihood ratios, over ...
Michael Chertkov, Mikhail G. Stepanov
ESOP
2010
Springer
14 years 4 months ago
Parameterized Memory Models and Concurrent Separation Logic
Formal reasoning about concurrent programs is usually done with the assumption that the underlying memory model is sequentially consistent, i.e. the execution outcome is equivalen...
Rodrigo Ferreira, Xinyu Feng and Zhong Shao
IPCO
2004
93views Optimization» more  IPCO 2004»
13 years 9 months ago
Semi-continuous Cuts for Mixed-Integer Programming
We study the convex hull of the feasible set of the semi-continuous knapsack problem, in which the variables belong to the union of two intervals. Besides being important in its o...
I. R. de Farias
NIPS
2004
13 years 9 months ago
A Direct Formulation for Sparse PCA Using Semidefinite Programming
We examine the problem of approximating, in the Frobenius-norm sense, a positive, semidefinite symmetric matrix by a rank-one matrix, with an upper bound on the cardinality of its...
Alexandre d'Aspremont, Laurent El Ghaoui, Michael ...
EOR
2000
74views more  EOR 2000»
13 years 7 months ago
On the capacitated lot-sizing and continuous 0-1 knapsack polyhedra
We consider the single itemcapacitated lot{sizingproblem, a well-known productionplanningmodelthat often arises in practical applications, and derive new classes of valid inequali...
Andrew J. Miller, George L. Nemhauser, Martin W. P...