A. Thompson

activity

20102020

most citedPhase Transitions for Greedy Sparse Approximation Algorithms

3 citations · 3 across the 4 of their papers we have counts for

collaborators

Showing 2018Show all

2 papers · 1 filter

math.OC2018

Sparse Inverse Problems Over Measures: Equivalence of the Conditional Gradient and Exchange Methods

Armin Eftekhari, Andrew Thompson

We study an optimization program over nonnegative Borel measures that encourages sparsity in its solution. Efficient solvers for this program are in increasing demand, as it arises…

math.OC2018

Sparse non-negative super-resolution -- simplified and stabilised

Armin Eftekhari, Jared Tanner, Andrew Thompson +2

The convolution of a discrete measure, $x = \sum_{i = 1}^{k} a_{i} δ_{t_{i}}$ , with a local window function, $ϕ (s - t)$ , is a common model for a measurement device whose resolution is substantia…