A. Cohen

activity

20082023

most citedApproximation and learning by greedy algorithms

323 citations · 420 across the 20 of their papers we have counts for

collaborators

Showing 2018Show all

2 papers · 1 filter

math.NA2018

Reduced Basis Greedy Selection Using Random Training Sets

Albert Cohen, Wolfgang Dahmen, Ronald DeVore

Reduced bases have been introduced for the approximation of parametrized PDEs in applications where many online queries are required. Their numerical efficiency for such problems h…

math.NA2018

Sequential sampling for optimal weighted least squares approximations in hierarchical spaces

Benjamin Arras, Markus Bachmayr, Albert Cohen

We consider the problem of approximating an unknown function $u \in L^{2} (D, ρ)$ from its evaluations at given sampling points $x^{1}, \dots, x^{n} \in D$ , where $D \subset R^{d}$ is a…