Roberto Colomboni

works on

constant stretch 1 correlated sampling 1 covariance bounds 1 effective resistance 1 external-field measures 1 hypersimplex 1

From the 1 of 13 linked papers with an AI index.

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math.OC2026

Sharp Dimension Dependence for the Last Iterate of the SubGradient Method

Guglielmo Beretta, Tommaso Cesari, Roberto Colomboni +1

We study the last iterate of the projected subGradient Method (sGM) for convex Lipschitz objectives defined on $R^{d}$ . We prove that, for a finite horizon $n$ and a constan…

math.OC2026

New Bounds for the Last Iterate of the Stochastic subGradient Method

Guglielmo Beretta, Tommaso Cesari, Roberto Colomboni +1

We study the last iterate of the stochastic subgradient method for one-dimensional convex Lipschitz objectives. For a fixed horizon $n$ , we consider the standard fixed stepsizes $Î…