Search Results for author: Tingwei Meng

Found 10 papers, 6 papers with code

Leveraging viscous Hamilton-Jacobi PDEs for uncertainty quantification in scientific machine learning

no code implementations12 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.

Bayesian Inference Uncertainty Quantification

Leveraging Hamilton-Jacobi PDEs with time-dependent Hamiltonians for continual scientific machine learning

no code implementations13 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.

Computational Efficiency Continual Learning

In-Context Operator Learning with Data Prompts for Differential Equation Problems

2 code implementations17 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.

Operator learning

Leveraging Multi-time Hamilton-Jacobi PDEs for Certain Scientific Machine Learning Problems

1 code implementation22 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.

Continual Learning Transfer Learning

SympOCnet: Solving optimal control problems with applications to high-dimensional multi-agent path planning problems

1 code implementation14 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.

On Hamilton-Jacobi PDEs and image denoising models with certain non-additive noise

1 code implementation28 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.

Image Denoising

Neural network architectures using min-plus algebra for solving certain high dimensional optimal control problems and Hamilton-Jacobi PDEs

1 code implementation7 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.

Connecting Hamilton--Jacobi partial differential equations with maximum a posteriori and posterior mean estimators for some non-convex priors

no code implementations22 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.

Measure-conditional Discriminator with Stationary Optimum for GANs and Statistical Distance Surrogates

no code implementations17 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.

Transfer Learning

On some neural network architectures that can represent viscosity solutions of certain high dimensional Hamilton--Jacobi partial differential equations

1 code implementation22 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

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