28 citations · 64 across the 10 of their papers we have counts for
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math.OC2018★ 2 cited
An equivalence between critical points for rank constraints versus low-rank factorizations
Wooseok Ha, Haoyang Liu, Rina Foygel Barber
Two common approaches in low-rank optimization problems are either working directly with a rank constraint on the matrix variable, or optimizing over a low-rank factorization so th…
physics.med-ph2018★ 28 cited
Estimating the spectrum in computed tomography via Kullback-Leibler divergence constrained optimization
Wooseok Ha, Emil Y. Sidky, Rina Foygel Barber +2
We study the problem of spectrum estimation from transmission data of a known phantom. The goal is to reconstruct an x-ray spectrum that can accurately model the x-ray transmission…