Search Results for author: Jérôme Darbon

Found 13 papers, 5 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

Efficient first-order algorithms for large-scale, non-smooth maximum entropy models with application to wildfire science

no code implementations11 Mar 2024 Gabriel P. Langlois, Jatan Buch, Jérôme Darbon

State-of-the-art algorithms for Maxent models, however, were not originally designed to handle big data sets; these algorithms either rely on technical devices that may yield unreliable numerical results, scale poorly, or require smoothness assumptions that many practical Maxent models lack.

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

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.

Efficient and robust high-dimensional sparse logistic regression via nonlinear primal-dual hybrid gradient algorithms

no code implementations30 Nov 2021 Jérôme Darbon, Gabriel P. Langlois

Since modern big data sets can contain hundreds of thousands to billions of predictor variables, variable selection methods depend on efficient and robust optimization algorithms to perform well.

regression Variable Selection

Accelerated nonlinear primal-dual hybrid gradient methods with applications to supervised machine learning

no code implementations24 Sep 2021 Jérôme Darbon, Gabriel P. Langlois

To address this issue, we introduce accelerated nonlinear PDHG methods that achieve an optimal convergence rate with stepsize parameters that are simple and efficient to compute.

BIG-bench Machine Learning

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.

A Caputo fractional derivative-based algorithm for optimization

no code implementations6 Apr 2021 Yeonjong Shin, Jérôme Darbon, George Em Karniadakis

We propose three versions -- non-adaptive, adaptive terminal and adaptive order.

Optimal Trajectories of a UAV Base Station Using Hamilton-Jacobi Equations

no code implementations4 Feb 2021 Marceau Coupechoux, Jérôme Darbon, Jean-Marc Kélif, Marc Sigelle

We derive closed-form formulas for the optimal trajectory when the traffic intensity is quadratic (single-phase) using Hamilton-Jacobi equations.

Optimization and Control Networking and Internet Architecture

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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