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CDC
2008
IEEE
154views Control Systems» more  CDC 2008»
14 years 1 months ago
Distributed calculation of linear functions in noisy networks via linear iterations
— Given a fixed network where each node has some given initial value, and under the constraint that each node receives noisy transmissions from its immediate neighbors, we provi...
Shreyas Sundaram, Christoforos N. Hadjicostis
STOC
2009
ACM
160views Algorithms» more  STOC 2009»
14 years 8 months ago
CSP gaps and reductions in the lasserre hierarchy
We study integrality gaps for SDP relaxations of constraint satisfaction problems, in the hierarchy of SDPs defined by Lasserre. Schoenebeck [25] recently showed the first integra...
Madhur Tulsiani
CORR
2007
Springer
130views Education» more  CORR 2007»
13 years 7 months ago
Lagrangian Relaxation for MAP Estimation in Graphical Models
Abstract— We develop a general framework for MAP estimation in discrete and Gaussian graphical models using Lagrangian relaxation techniques. The key idea is to reformulate an in...
Jason K. Johnson, Dmitry M. Malioutov, Alan S. Wil...
CIMAGING
2010
195views Hardware» more  CIMAGING 2010»
13 years 8 months ago
SPIRAL out of convexity: sparsity-regularized algorithms for photon-limited imaging
The observations in many applications consist of counts of discrete events, such as photons hitting a detector, which cannot be effectively modeled using an additive bounded or Ga...
Zachary T. Harmany, Roummel F. Marcia, Rebecca Wil...
IJCAI
1993
13 years 8 months ago
Automated Trend Detection with Alternate Temporal Hypotheses
We have written a prototype computer program called TrenDx for automated trend detection during process monitoring. The program uses a representation called trend templates that d...
Ira J. Haimowitz, Isaac S. Kohane