The ninety-seventh UQSay seminar on UQ, DACE and related topics will take place online on Thursday afternoon, March 26, 2026. 2–3 PM — Anthony Quintin (CEA DIF) Optimal experimental designs based on the cross-entropy method for planning fracture toughness tests Nuclear reactor pressure vessels undergo progressive embrittlement under neutron irradiation, monitored through the Master Curve […]
Title: Robust Stability and Recurrence of Stochastic Optimal Control Abstract: A Lyapunov theoretic approach to stability and robustness of optimal control is well-established for deterministic systems. Considering the rise of learning in control, the close links between optimal control and reinforcement learning (RL), as well as the fact that RL is usually formulated for stochastic […]
The ninety-sixth UQSay seminar on UQ, DACE and related topics will take place online on Thursday afternoon, March 12, 2026. 2–3 PM — Richard Everitt (Department of Statistics, University of Warwick) Improved MCMC with active subspaces Constantine et al. (2016) introduced a Metropolis-Hastings (MH) approach that target the active subspace of a posterior distribution: a […]
This seminar will consist of two talks: Please find below additional details on our speakers and their presentations. These details, and further information on upcoming seminars, are also available on the seminar website.
The ninety-fifth UQSay seminar on UQ, DACE and related topics will take place online on Thursday afternoon, February 12, 2026. 2–3 PM — Yuansi Chen (ETH Zürich) — [slides] When does Metropolized Hamiltonian Monte Carlo provably outperform Metropolis-adjusted Langevin algorithm? We analyze the mixing time of Metropolized Hamiltonian Monte Carlo (HMC) with the leapfrog integrator […]
