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Deep learning of parameterized equations with applications to uncertainty quantification

Journal Article · · International Journal for Uncertainty Quantification
 [1];  [1];  [2];  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We propose a learning algorithm for discovering unknown parameterized dynamical systems by using observational data of the state variables. Our method is built upon and extends the recent work of discovering unknown dynamical systems, in particular those using deep neural network (DNN). We propose a DNN structure, largely based upon the residual network (ResNet), to not only learn the unknown form of the governing equation but also take into account the random effect embedded in the system, which is generated by the random parameters. Once the DNN model is successfully constructed, it is able to produce system prediction over longer term and for arbitrary parameter values. For uncertainty quantification, it allows us to conduct uncertainty analysis by evaluating solution statistics over the parameter space.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); USDOE National Nuclear Security Administration (NNSA); US Air Force Office of Scientific Research (AFOSR)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1738923
Report Number(s):
SAND--2020-10596J; 691098
Journal Information:
International Journal for Uncertainty Quantification, Journal Name: International Journal for Uncertainty Quantification Journal Issue: 2 Vol. 11; ISSN 2152-5080
Publisher:
Begell HouseCopyright Statement
Country of Publication:
United States
Language:
English

References (11)

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Time-dependent generalized polynomial chaos journal November 2010
Non-intrusive reduced order modeling of nonlinear problems using neural networks journal June 2018
An artificial neural network as a troubled-cell indicator journal August 2018
Detecting troubled-cells on two-dimensional unstructured grids using a neural network journal November 2019
Approximation theory of the MLP model in neural networks journal January 1999
On the Complexity of Neural Network Classifiers: A Comparison Between Shallow and Deep Architectures journal August 2014
Autocrine loops with positive feedback enable context-dependent cell signaling journal March 2002
Deep UQ: Learning deep neural network surrogate models for high dimensional uncertainty quantification text January 2018

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