activity
20242026
collaborators

5 papers

cs.LG2026

Stabilized neural Hamilton--Jacobi--Bellman solvers: Error analysis and applications in model-based reinforcement learning

Minseok Kim, Yeongjong Kim, Namkyeong Cho +1

Physics-informed neural solvers offer a promising route to model-based reinforcement learning in continuous time, where optimal feedback synthesis is governed by Hamilton--Jacobi--…

math.OC2026

Policy Iteration for Stationary Discounted Hamilton--Jacobi--Bellman Equations: A Viscosity Approach

Namkyeong Cho, Yeoneung Kim

We study policy iteration (PI) for deterministic infinite-horizon discounted optimal control problems, whose value function is characterized by a stationary Hamilton--Jacobi--Bellm…

math.NA2025

Physics-informed approach for exploratory Hamilton--Jacobi--Bellman equations via policy iterations

Yeongjong Kim, Namkyeong Cho, Minseok Kim +1

We propose a mesh-free policy iteration framework based on physics-informed neural networks (PINNs) for solving entropy-regularized stochastic control problems. The method iterativ…

cs.LG2025

Physics-Informed Policy Iteration for High-Dimensional Hamilton--Jacobi--Bellman Equations: Interior Error Bounds without Boundary Data

Yeongjong Kim, Yeoneung Kim, Minseok Kim +1

We develop a physics-informed policy-iteration method for stationary second-order Hamilton--Jacobi--Bellman equations arising in continuous-time stochastic control. Each policy-eva…

math.OC2024

On the stability of Lipschitz continuous control problems and its application to reinforcement learning

Namkyeong Cho, Yeoneung Kim

We address the crucial yet underexplored stability properties of the Hamilton--Jacobi--Bellman (HJB) equation in model-free reinforcement learning contexts, specifically for Lipsch…