170 citations · 909 across the 66 of their papers we have counts for
4 papers · 1 filter
Weighted eigenfunction estimates with applications to compressed sensing
Nicolas Burq, Semyon Dyatlov, Rachel Ward +1
Using tools from semiclassical analysis, we give weighted L^\infty estimates for eigenfunctions of strictly convex surfaces of revolution. These estimates give rise to new sampling…
Stability for second-order chaotic sigma delta quantization
Lauren Bandklayder, Rachel Ward
We prove that that second-order (double-loop) chaotic sigma-delta schemes are stable - within a certain parameter range, all state variables of the system are guaranteed to remain…
Chi-square and classical exact tests often wildly misreport significance; the remedy lies in computers
William Perkins, Mark Tygert, Rachel Ward
If a discrete probability distribution in a model being tested for goodness-of-fit is not close to uniform, then forming the Pearson chi-square statistic can involve division by ne…
Sparse recovery for spherical harmonic expansions
Holger Rauhut, Rachel Ward
We show that sparse spherical harmonic expansions can be efficiently recovered from a small number of randomly chosen samples on the sphere. To establish the main result, we verify…