A column-exchange modification to greedy volume-maximization subset selection achieves the same bounds on the pseudoinverse representation error as existing methods but with faster runtime for n much larger than m, plus a new upper bound on the number of exchanges needed.
Discrete linear canonical transform on graphs: Uncertainty principle and sampling.Signal Processing, 226:109668, 2025
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Subset selection for matrices by column exchange
A column-exchange modification to greedy volume-maximization subset selection achieves the same bounds on the pseudoinverse representation error as existing methods but with faster runtime for n much larger than m, plus a new upper bound on the number of exchanges needed.