Minimax risk prediction of phase transitions in convex programs
Minimax risk prediction of phase transitions in convex programs
Let be the target vector, let denote the minimax mean-square-error risk, and consider recovery by the convex program with measurement matrix . Suppose that has independent standard normal entries and that is convex. Minimax risk predicts phase transitions.
The order notation is intended heuristically. The conjecture asserts that the minimax risk predicts the sharp transition in the number of Gaussian measurements for several convex regularizers, but the statement is presented without a definitive resolution here.
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Primary source
Dennis Amelunxen, Martin Lotz, Michael B. McCoy and Joel A. Tropp, “Living on the edge: Phase transitions in convex programs with random data”, arXiv:1303.6672 (2014).
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