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» Matrix Coherence and the Nystrom Method
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ADCM
1998
133views more  ADCM 1998»
13 years 5 months ago
Numerical exploitation of symmetry in integral equations
: Linear integral operators describing physical problems on symmetric domains often are equivariant, which means that they commute with certain symmetries, i.e., with a group of or...
Eugene L. Allgower, Kurt Georg
TSP
2008
124views more  TSP 2008»
13 years 5 months ago
Dictionary Preconditioning for Greedy Algorithms
This article introduces the concept of sensing dictionaries. It presents an alteration of greedy algorithms like thresholding or (Orthogonal) Matching Pursuit which improves their...
Karin Schnass, Pierre Vandergheynst
CVPR
2008
IEEE
13 years 7 months ago
Photometric stereo with coherent outlier handling and confidence estimation
In photometric stereo a robust method is required to deal with outliers, such as shadows and non-Lambertian reflections. In this paper we rely on a probabilistic imaging model tha...
Frank Verbiest, Luc J. Van Gool
ICPR
2008
IEEE
14 years 7 months ago
Incoherent motion detection using a time-series Gram matrix feature
This paper p'VlJOses a /lew meThod for incoherent lIlotion recognitioll from video sequences. We use time-series ~pariQ-lempora/illlensity gradients within a space-rime patch...
Hironobu Fujiyoshi, Masanori Miyoshi, Masato Kazui...
AI
2011
Springer
12 years 9 months ago
Subspace Mapping of Noisy Text Documents
Abstract. Subspace mapping methods aim at projecting high-dimensional data into a subspace where a specific objective function is optimized. Such dimension reduction allows the re...
Axel J. Soto, Marc Strickert, Gustavo E. Vazquez, ...