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Title: Leveraging Multitime Hamilton–Jacobi PDEs for Certain Scientific Machine Learning Problems

Journal Article · · SIAM Journal on Scientific Computing
DOI: https://doi.org/10.1137/23m1561397 · OSTI ID:2441157
 [1]; ORCiD logo [2];  [3]; ORCiD logo [3]; ORCiD logo [4]
  1. Brown University, Providence, RI (United States); Brown University
  2. University of California, Los Angeles, CA (United States)
  3. Brown University, Providence, RI (United States)
  4. Brown University, Providence, RI (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Hamilton-Jacobi partial differential equations (HJ PDEs) have deep connections with a wide range of fields, including optimal control, differential games, and imaging sciences. By considering the time variable to be a higher dimensional quantity, HJ PDEs can be extended to the multi-time case. In this paper, we establish a novel theoretical connection between specific optimization problems arising in machine learning and the multi-time Hopf formula, which corresponds to a representation of the solution to certain multi-time HJ PDEs. Through this connection, we increase the interpretability of the training process of certain machine learning applications by showing that when we solve these learning problems, we also solve a multi-time HJ PDE and, by extension, its corresponding optimal control problem. As a first exploration of this connection, we develop the relation between the regularized linear regression problem and the Linear Quadratic Regulator (LQR). We then leverage our theoretical connection to adapt standard LQR solvers (namely, those based on the Riccati ordinary differential equations) to design new training approaches for machine learning. Lastly, we provide some numerical examples that demonstrate the versatility and possible computational advantages of our Riccati-based approach in the context of continual learning, post-training calibration, transfer learning, and sparse dynamics identification.

Research Organization:
Brown University, Providence, RI (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Multidisciplinary University Research Initiative (MURI); Air Force Office of Scientific Research (AFOSR)
Grant/Contract Number:
SC0023191
OSTI ID:
2441157
Journal Information:
SIAM Journal on Scientific Computing, Journal Name: SIAM Journal on Scientific Computing Journal Issue: 2 Vol. 46; ISSN 1064-8275
Publisher:
Society for Industrial and Applied Mathematics (SIAM)Copyright Statement
Country of Publication:
United States
Language:
English

References (29)

Numerical Methods for Ordinary Differential Equations book July 2016
Perspectives on Characteristics Based Curse-of-Dimensionality-Free Numerical Approaches for Solving Hamilton–Jacobi Equations journal July 2018
A First-Order Primal-Dual Algorithm for Convex Problems with Applications to Imaging journal December 2010
On Hamilton–Jacobi PDEs and Image Denoising Models with Certain Nonadditive Noise journal March 2022
Error propagation properties of recursive least-squares adaptation algorithms journal March 1985
The taxation principle and multi-time Hamilton-Jacobi equations journal January 1985
On Hopf's formulas for solutions of Hamilton-Jacobi equations journal January 1984
Discovering a reaction–diffusion model for Alzheimer’s disease by combining PINNs with symbolic regression journal February 2024
DGM: A deep learning algorithm for solving partial differential equations journal December 2018
Physics-informed neural networks: A deep learning framework for solving forward and inverse problems involving nonlinear partial differential equations journal February 2019
Uncertainty quantification in scientific machine learning: Methods, metrics, and comparisons journal March 2023
Continual lifelong learning with neural networks: A review journal May 2019
Deep learning journal May 2015
Array programming with NumPy journal September 2020
Deep transfer operator learning for partial differential equations under conditional shift journal December 2022
Discovering governing equations from data by sparse identification of nonlinear dynamical systems journal March 2016
Overcoming catastrophic forgetting in neural networks journal March 2017
Solving high-dimensional partial differential equations using deep learning journal August 2018
Sampled limited memory methods for massive linear inverse problems journal April 2020
Hopf formula and multitime Hamilton-Jacobi equations journal January 1986
On the numerical stability and accuracy of the conventional recursive least squares algorithm journal January 1999
QRnet: Optimal Regulator Design With LQR-Augmented Neural Networks journal October 2021
Pareto-Based Multiobjective Machine Learning: An Overview and Case Studies journal May 2008
Multi-Element Generalized Polynomial Chaos for Arbitrary Probability Measures journal January 2006
On Convex Finite-Dimensional Variational Methods in Imaging Sciences and Hamilton--Jacobi Equations journal January 2015
On Decomposition Models in Imaging Sciences and Multi-time Hamilton--Jacobi Partial Differential Equations journal January 2020
NeuralUQ: A Comprehensive Library for Uncertainty Quantification in Neural Differential Equations and Operators journal February 2024
Algorithms for overcoming the curse of dimensionality for certain Hamilton–Jacobi equations arising in control theory and elsewhere journal September 2016
Advances and Open Problems in Federated Learning journal January 2021