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Best m-term trigonometric approximation of periodic functions of several variables from Nikol'skii-Besov classes for small smoothness.
Serhii A. Stasyuk
Published in:
J. Approx. Theory (2014)
Keyphrases
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basis functions
linear functions
cost function
image decomposition
smoothness term
objective function
small number
random variables
variable selection
convex functions
np hard
partial differential equations
boolean variables