22 citations · 24 across the 3 of their papers we have counts for
4 papers
On the stability and accuracy of least squares approximations
Albert Cohen, Mark A. Davenport, Dany Leviatan
We consider the problem of reconstructing an unknown function on a domain from samples of at randomly chosen points with respect to a given measure . Given a s…
Adaptive and anisotropic piecewise polynomial approximation
Albert Cohen, Jean-Marie Mirebeau
We survey the main results of approximation theory for adaptive piecewise polynomial functions. In such methods, the partition on which the piecewise polynomial approximation is de…
Adaptive multiresolution analysis based on anisotropic triangulations
Albert Cohen, Nira Dyn, Frédéric Hecht +1
A simple greedy refinement procedure for the generation of data-adapted triangulations is proposed and studied. Given a function of two variables, the algorithm produces a hierarch…
Adaptive methods for PDE's: wavelets or mesh refinement?
Albert Cohen
Adaptive mesh refinement techniques are nowadays an established and powerful tool for the numerical discretization of PDE's. In recent years, wavelet bases have been proposed as an…