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Multilevel preconditioning of graph-Laplacians: Polynomial approximation of the pivot blocks inverses.
Petia T. Boyanova
Ivan Georgiev
Svetozar Margenov
Ludmil T. Zikatanov
Published in:
Math. Comput. Simul. (2012)
Keyphrases
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polynomial approximation
pointwise
lower bound
sufficient conditions
edge preserving
early vision
facet model
confidence intervals
primal dual
error rate
iterative methods
conjugate gradient
machine learning
bundle adjustment
sample size
linear systems
upper bound
computer vision
robust estimators