Welcome to the second event of the 2024 Seminar Series of the Expertise Center for Climate Extremes (ECCE)! You can attend it in person on the UNIL campus or online (Zoom link below).
Please use this Zoom link (Meeting ID: 652 577 1125, Password: Wintenberg) for online attendance.
Stochastic Online Convex Optimization with Applications to Adaptive Forecasting
We propose a general framework for stochastic online convex optimization. Certain algorithms, including online Newton steps and a scale-free variant of Bernstein online aggregation, achieve the best-known rates in unbounded stochastic settings. We apply it to calibrating parametric probabilistic forecasters of non-stationary sub-Gaussian time series. We illustrate the benefit of our approach to real-world data such as electricity load and temperatures.