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YouTube

DeepOnet - Learning Nonlinear Operators Based on the Universal Approximation Theorem of Operators

MITCBMM via YouTube

Overview

This course aims to teach learners the concept of Deep Operator Networks (DeepONet) and how they can be used to learn nonlinear operators based on the universal approximation theorem of operators. The course covers topics such as the universal approximation theorem, designing DeepONet, learning explicit and implicit operators, and studying the effect of different formulations of the input function space on generalization error. By the end of the course, students will be able to understand and apply DeepONet to learn various operators, including integrals and fractional Laplacians, as well as deterministic and stochastic differential equations. The course utilizes a combination of theoretical explanations, examples, and demonstrations to cater to learners interested in neural networks, operators, and complex systems.

Syllabus

Introduction
Universal approximation theorem
Why is it different
Classification problem
New concepts
Theorem
Smoothness
What is a pin
Autonomy
Hidden Fluid Mechanics
Espresso
Brain Aneurysm
Operators
Problem setup
The universal approximation theorem
Crossproduct
Deep Neural Network
Input Space
Recap
Example
Results
Learning fractional operators
Individual trajectories
Nonlinearity
Multiphysics
Eminem
Spectral Methods
Can we bound the error in term of the operator norm
Can we move away from compactness assumption
What allows these networks to approximate exact solutions
Can it learn complex userdefined operators
Wavelets instead of sigmoids
Variational pins
Comparing to real neurons
How to test this idea

Taught by

MITCBMM

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