no code implementations • 12 Apr 2024 • Zongren Zou, Tingwei Meng, Paula Chen, Jérôme Darbon, George Em Karniadakis
We provide several examples from SciML involving noisy data and \textit{epistemic uncertainty} to illustrate the potential advantages of our approach.
no code implementations • 13 Nov 2023 • Paula Chen, Tingwei Meng, Zongren Zou, Jérôme Darbon, George Em Karniadakis
This connection allows us to reinterpret incremental updates to learned models as the evolution of an associated HJ PDE and optimal control problem in time, where all of the previous information is intrinsically encoded in the solution to the HJ PDE.
2 code implementations • 17 Apr 2023 • Liu Yang, Siting Liu, Tingwei Meng, Stanley J. Osher
This paper introduces a new neural-network-based approach, namely In-Context Operator Networks (ICON), to simultaneously learn operators from the prompted data and apply it to new questions during the inference stage, without any weight update.
1 code implementation • 22 Mar 2023 • Paula Chen, Tingwei Meng, Zongren Zou, Jérôme Darbon, George Em Karniadakis
Hamilton-Jacobi partial differential equations (HJ PDEs) have deep connections with a wide range of fields, including optimal control, differential games, and imaging sciences.
1 code implementation • 14 Jan 2022 • Tingwei Meng, Zhen Zhang, Jérôme Darbon, George Em Karniadakis
Solving high-dimensional optimal control problems in real-time is an important but challenging problem, with applications to multi-agent path planning problems, which have drawn increased attention given the growing popularity of drones in recent years.
1 code implementation • 28 May 2021 • Jérôme Darbon, Tingwei Meng, Elena Resmerita
We show that the optimal values are ruled by some Hamilton-Jacobi PDEs, while the optimizers are characterized by the spatial gradient of the solution to the Hamilton-Jacobi PDEs.
1 code implementation • 7 May 2021 • Jérôme Darbon, Peter M. Dower, Tingwei Meng
In this paper, we propose two abstract neural network architectures which are respectively used to compute the value function and the optimal control for certain class of high dimensional optimal control problems.
no code implementations • 22 Apr 2021 • Jérôme Darbon, Gabriel P. Langlois, Tingwei Meng
In [23, 26], connections between these optimization problems and (multi-time) Hamilton--Jacobi partial differential equations have been proposed under the convexity assumptions of both the data fidelity and regularization terms.
no code implementations • 17 Jan 2021 • Liu Yang, Tingwei Meng, George Em Karniadakis
We propose a simple but effective modification of the discriminators, namely measure-conditional discriminators, as a plug-and-play module for different GANs.
1 code implementation • 22 Feb 2020 • Jérôme Darbon, Tingwei Meng
We propose novel connections between several neural network architectures and viscosity solutions of some Hamilton--Jacobi (HJ) partial differential equations (PDEs) whose Hamiltonian is convex and only depends on the spatial gradient of the solution.
Numerical Analysis Numerical Analysis