24 citations · 53 across the 12 of their papers we have counts for
5 papers · 1 filter
A note on identifiability conditions in confirmatory factor analysis
William Leeb
Recently, Chen, Li and Zhang established conditions characterizing asymptotic identifiability of latent factors in confirmatory factor analysis. We give an elementary proof showing…
Properties of Laplacian Pyramids for Extension and Denoising
William Leeb
We analyze the Laplacian pyramids algorithm of Rabin and Coifman for extending and denoising a function sampled on a discrete set of points. We provide mild conditions under which…
Rapid evaluation of the spectral signal detection threshold and Stieltjes transform
William Leeb
Accurate detection of signal components is a frequently-encountered challenge in statistical applications with low signal-to-noise ratio. This problem is particularly challenging i…
Multi-target detection with application to cryo-electron microscopy
Tamir Bendory, Nicolas Boumal, William Leeb +2
We consider the multi-target detection problem of recovering a set of signals that appear multiple times at unknown locations in a noisy measurement. In the low noise regime, one c…
Matrix denoising for weighted loss functions and heterogeneous signals
William Leeb
We consider the problem of estimating a low-rank matrix from a noisy observed matrix. Previous work has shown that the optimal method depends crucially on the choice of loss functi…