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Safeguarded Learned Convex Optimization

AAAI 2023 · Optimization › Optimizers · approach: Randomized gradient estimation · 7 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add the Safe-L2O safeguard and fallback updates to ALISTAALISTA · LASSO, unseen data distributionconvergenceHelped
Add the Safe-L2O safeguard and fallback updates to LISTALISTA-CP · Natural image denoising, pepper-and-salt noiseconvergenceHelped
Add the Safe-L2O safeguard and fallback updates to LiADMMLiADMM · Sparse coding with an ℓ1-ℓ1 objectiveconvergenceHelped
Use a trained L2O algorithm instead of the corresponding analytic optimization algorithmALISTA, LISTA, AdaLISTA, and LiADMM · Data from the training distributioncomputational cost: at least one order of magnitudeHelped
Use the EMA safeguard sequenceSafe-L2O · Safeguard parameter selectionpracticalityHelped
Apply the safeguard intermittently rather than requiring every L2O update to improveSafe-L2O · ALISTA, LASSOsafeguard activation frequency: only when $k=2$, $k=7$, and $k=12$Helped

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