Toni Volkmer

activity

20152020

most citedNFFT meets Krylov methods: Fast matrix-vector products for the graph Laplacian of fully connected networks

12 citations · 15 across the 7 of their papers we have counts for

collaborators

Showing 2019Show all

2 papers · 1 filter

math.NA2019

Worst-case recovery guarantees for least squares approximation using random samples

Lutz Kämmerer, Tino Ullrich, Toni Volkmer

We construct a least squares approximation method for the recovery of complex-valued functions from a reproducing kernel Hilbert space on $D \subset R^{d}$ . The nodes are dr…

math.NA2019★ 1 cited

Sparse Harmonic Transforms II: Best $s$ -Term Approximation Guarantees for Bounded Orthonormal Product Bases in Sublinear-Time

Bosu Choi, Mark Iwen, Toni Volkmer

In this paper, we develop a sublinear-time compressive sensing algorithm for approximating functions of many variables which are compressible in a given Bounded Orthonormal Product…

Worst-case recovery guarantees for least squares approximation using random samples

Sparse Harmonic Transforms II: Best s-Term Approximation Guarantees for Bounded Orthonormal Product Bases in Sublinear-Time

Sparse Harmonic Transforms II: Best $s$ -Term Approximation Guarantees for Bounded Orthonormal Product Bases in Sublinear-Time