Necessary optimality conditions for optimal control problems in Wasserstein spaces

B Bonnet, H Frankowska - Applied Mathematics & Optimization, 2021 - Springer
In this article, we derive first-order necessary optimality conditions for a constrained optimal
control problem formulated in the Wasserstein space of probability measures. To this end …

Regularized Stein variational gradient flow

Y He, K Balasubramanian, BK Sriperumbudur… - Foundations of …, 2024 - Springer
The stein variational gradient descent (SVGD) algorithm is a deterministic particle method
for sampling. However, a mean-field analysis reveals that the gradient flow corresponding to …

The Pontryagin maximum principle in the Wasserstein space

B Bonnet, F Rossi - Calculus of Variations and Partial Differential …, 2019 - Springer
Abstract We prove a Pontryagin Maximum Principle for optimal control problems in the
space of probability measures, where the dynamics is given by a transport equation with non …

Ensemble Kalman sampler: Mean-field limit and convergence analysis

Z Ding, Q Li - SIAM Journal on Mathematical Analysis, 2021 - SIAM
The ensemble Kalman sampler (EKS) is a method introduced in Garbuno-Inigo et al., SIAM
J. Appl. Dyn. Syst., 19 (2020), pp. 412--441 to find approximately independent and …

Consensus formation in first-order graphon models with time-varying topologies

B Bonnet, NP Duteil, M Sigalotti - Mathematical Models and Methods …, 2022 - World Scientific
In this paper, we investigate the asymptotic formation of consensus for several classes of
time-dependent cooperative graphon dynamics. After motivating the use of this type of …

Measure-theoretic models for crowd dynamics

B Piccoli, F Rossi - Crowd Dynamics, Volume 1: Theory, Models, and …, 2019 - Springer
This chapter revises some modeling, analysis, and simulation contributions for crowd
dynamics using time-evolving measures. Two key features are strictly related to the use of …

EDP-convergence for nonlinear fast–slow reaction systems with detailed balance

A Mielke, MA Peletier, A Stephan - Nonlinearity, 2021 - iopscience.iop.org
We consider nonlinear reaction systems satisfying mass-action kinetics with slow and fast
reactions. It is known that the fast-reaction-rate limit can be described by an ODE with …

Semiconcavity and sensitivity analysis in mean-field optimal control and applications

B Bonnet, H Frankowska - Journal de Mathématiques Pures et Appliquées, 2022 - Elsevier
In this article, we investigate some of the fine properties of the value function associated with
an optimal control problem in the Wasserstein space of probability measures. Building on …

Intrinsic Lipschitz regularity of mean-field optimal controls

B Bonnet, F Rossi - SIAM Journal on Control and Optimization, 2021 - SIAM
In this article, we provide sufficient conditions under which the controlled vector fields
solution of optimal control problems formulated on continuity equations are Lipschitz regular …

Ensemble Kalman inversion for nonlinear problems: weights, consistency, and variance bounds

Z Ding, Q Li, J Lu - arXiv preprint arXiv:2003.02316, 2020 - arxiv.org
Ensemble Kalman Inversion (EnKI) and Ensemble Square Root Filter (EnSRF) are popular
sampling methods for obtaining a target posterior distribution. They can be seem as one …