collaborators

8 papers

math.NA2026

Wasserstein Moment Nudging for Vlasov-Poisson Data Assimilation

Liyao Lyu, Xinyue Yu, David Schneidinger +1

We introduce a continuous data assimilation method for particle-in-cell simulations of the Vlasov-Poisson equation when only hydrodynamic moments are observed. The forecast state i…

math.NA2026

Multiscale Nudging: From Macroscopic Observations to Microscopic Dynamics

Liyao Lyu, Xinyue Yu, Hayden Schaeffer

We introduce a measure-based nudging framework for assimilating macroscopic observations into microscopic mean-field particle dynamics. The central difficulty is a representation m…

physics.comp-ph2026

Consensus-based adaptive sampling and approximation for high-dimensional energy landscapes

Liyao Lyu, Huan Lei

We present a consensus-based framework that unifies phase space exploration with posterior-residual-based adaptive sampling for surrogate construction in high-dimensional energy la…

math.NA2026

High-Dimensional Enhanced Sampling via Regularized Path-Dependent McKean--Vlasov Dynamics using Tensor Density Approximation

Liyao Lyu, Siyu Guo, Huan Lei

Sampling from high-dimensional Gibbs measures poses a challenge when the energy landscape consists of multiple metastable states. Enhanced-sampling methods mitigate this difficulty…

math.NA2026

MVNN: A Measure-Valued Neural Network for Learning McKean-Vlasov Dynamics from Particle Data

Liyao Lyu, Xinyue Yu, Hayden Schaeffer

Collective behaviors that emerge from interactions are fundamental to numerous biological systems. To learn such interacting forces from observations, we introduce a measure-valued…

math.NA2025

A stochastic branching particle method for solving non-conservative reaction-diffusion equations

Liyao Lyu, Huan Lei

We propose a stochastic branching particle-based method for solving nonlinear non-conservative advection-diffusion-reaction equations. The method splits the evolution into an advec…