CAMBIO DATA: mercoledì 4 giugno (e non più 3 giugno) per i seguenti due seminari presso il Dipartimento di Scienze Economiche e Aziendali (aula E, piano terra) dell'Università di Pavia.
*ore 13:30 *Hakima Bessaih (Florida International University) *titolo*: Dynamical systems with noisy data *abstract*: Reconstructing the state of a dynamical system from noisy observations is particularly challenging when the initial conditions are unknown. This talk focuses on synchronization-based and feedback control methods for data assimilation, which dynamically align model trajectories with observed data. Techniques such as nudging, observer-based schemes, and coupling strategies will be discussed, highlighting how they correct for uncertainty and stabilize the system in real time. Applications include chaotic systems and models governed by stochastic dynamics.
*ore 14:30: *Sam Power (University of Bristol) *titolo*: Gradient Flow Methods for Statistical Computation - Trends and Trajectories *abstract*: When conducting statistical estimation and inference, it is relatively commonplace that the dominant computational burden takes the form of an optimisation task. This has long been recognised for tasks of parameter estimation, though there is an increasing recognition that other tasks of interest can be fruitfully interpreted as optimisation tasks over a space of probability measures, or even over some 'hybrid' space involving both parameters and measures. In this talk, I will survey some trends in this area, focusing on how this high-level perspective finds use in both analysis of popular existing algorithms and synthesis of novel algorithms. I will also highlight opportunities for future contributions in this fast-growing area.
Tutti gli interessati sono invitati a partecipare.