Deep neural networks motivated by partial differential equations

L Ruthotto, E Haber - Journal of Mathematical Imaging and Vision, 2020 - Springer
Partial differential equations (PDEs) are indispensable for modeling many physical
phenomena and also commonly used for solving image processing tasks. In the latter area …

Learning physics-based models from data: perspectives from inverse problems and model reduction

O Ghattas, K Willcox - Acta Numerica, 2021 - cambridge.org
This article addresses the inference of physics models from data, from the perspectives of
inverse problems and model reduction. These fields develop formulations that integrate data …

[图书][B] Nonlinear programming: concepts, algorithms, and applications to chemical processes

LT Biegler - 2010 - SIAM
Chemical engineering applications have been a source of challenging optimization
problems for over 50 years. For many chemical process systems, detailed steady state and …

[图书][B] Lagrange multiplier approach to variational problems and applications

K Ito, K Kunisch - 2008 - SIAM
The objective of this monograph is the treatment of a general class of nonlinear variational
problems of the form min y∈ Y, u∈ U ƒ (y, u) subject to e (y, u)= 0, g (y, u)∈ K, 0.0. 1 where …

Design optimization using hyper-reduced-order models

D Amsallem, M Zahr, Y Choi, C Farhat - Structural and Multidisciplinary …, 2015 - Springer
Solving large-scale PDE-constrained optimization problems presents computational
challenges due to the large dimensional set of underlying equations that have to be handled …

Learning across scales---multiscale methods for convolution neural networks

E Haber, L Ruthotto, E Holtham, SH Jun - Proceedings of the AAAI …, 2018 - ojs.aaai.org
In this work, we establish the relation between optimal control and training deep Convolution
Neural Networks (CNNs). We show that the forward propagation in CNNs can be interpreted …

Mean-variance risk-averse optimal control of systems governed by PDEs with random parameter fields using quadratic approximations

A Alexanderian, N Petra, G Stadler, O Ghattas - SIAM/ASA Journal on …, 2017 - SIAM
We present a method for optimal control of systems governed by partial differential
equations (PDEs) with uncertain parameter fields. We consider an objective function that …

An effective method for parameter estimation with PDE constraints with multiple right-hand sides

E Haber, M Chung, F Herrmann - SIAM Journal on Optimization, 2012 - SIAM
Often, parameter estimation problems of parameter-dependent PDEs involve multiple right-
hand sides. The computational cost and memory requirements of such problems increase …

Enhancement in treatment planning for magnetic nanoparticle hyperthermia: optimization of the heat absorption pattern

M Salloum, R Ma, L Zhu - International Journal of Hyperthermia, 2009 - Taylor & Francis
In clinical applications of magnetic nanoparticle hyperthermia for cancer treatment it is very
important to ensure a maximum damage to the tumor while protecting the normal tissue. The …

Parallel three-dimensional magnetotelluric inversion using adaptive finite-element method. Part I: theory and synthetic study

AV Grayver - Geophysical Journal International, 2015 - academic.oup.com
This paper presents a distributed magnetotelluric inversion scheme based on adaptive finite-
element method (FEM). The key novel aspect of the introduced algorithm is the use of …