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math.NA2026
Spectral density estimation for normal matrices
Cameron Musco, Christopher Musco, Rikhav Shah +2
The spectral density estimation problem asks for an algorithm that, given an matrix , outputs a probability measure that is a good approximation to the uniform distr…
math.NA2025
Quasi-optimal hierarchically semi-separable matrix approximation
Noah Amsel, Tyler Chen, Feyza Duman Keles +4
We present a randomized algorithm for producing a quasi-optimal hierarchically semi-separable (HSS) approximation to an matrix using only matrix-vector products wit…