Stefan Steinerberger

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20242026

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math.OC2026

Gradient descent with exponentially increasing stepsizes and restarts

FranÃ§ois ClÃ©ment, Stefan Steinerberger

Let $f : R^{d} \to R$ . We consider gradient descent $x_{n + 1} = x_{n} - I ¨ _{n} \nabla f (x_{n})$ , where the stepsize $I ¨ _{n} = I ¨ \cdot e^{r n}$ is exponentially growing…

math.OC2025

Robust Online Sampling from Possibly Moving Target Distributions

We suppose we are given a list of points $x_{1}, \dots, x_{n} \in R$ , a target probability measure $I^¼$ and are asked to add additional points $x_{n + 1}, \dots, x_{n + m}$ so tha…