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IOR
2011
107views more  IOR 2011»
15 years 1 months ago
Information Collection on a Graph
We derive a knowledge gradient policy for an optimal learning problem on a graph, in which we use sequential measurements to refine Bayesian estimates of individual edge values i...
Ilya O. Ryzhov, Warren B. Powell
JUCS
2011
161views more  JUCS 2011»
15 years 1 months ago
Document Retrieval Using SIFT Image Features
: This paper describes a new approach to document classification based on visual features alone. Text-based retrieval systems perform poorly on noisy text. We have conducted serie...
Dan Smith, Richard Harvey
TNN
2010
216views Management» more  TNN 2010»
15 years 1 months ago
Simplifying mixture models through function approximation
Finite mixture model is a powerful tool in many statistical learning problems. In this paper, we propose a general, structure-preserving approach to reduce its model complexity, w...
Kai Zhang, James T. Kwok
ICASSP
2011
IEEE
14 years 10 months ago
Additive character sequences with small alphabets for compressed sensing matrices
Compressed sensing is a novel technique where one can recover sparse signals from the undersampled measurements. In this paper, a K × N measurement matrix for compressed sensing ...
Nam Yul Yu
ICASSP
2011
IEEE
14 years 10 months ago
RSS-based node localization in the presence of attenuating objects
Node localization is an important task in the context of wireless sensor networks. Although algorithms already exist to carry out localization using measurements of received signa...
Andrea Edelstein, Xi Chen, Yunpeng Li, Michael Rab...