Search Results for author: Luke Olson

Found 5 papers, 4 papers with code

Learning from Integral Losses in Physics Informed Neural Networks

2 code implementations27 May 2023 Ehsan Saleh, Saba Ghaffari, Timothy Bretl, Luke Olson, Matthew West

Our numerical results confirm the existence of the aforementioned bias in practice, and also show that our proposed delayed target approach can lead to accurate solutions with comparable quality to ones estimated with a large number of samples.

Benchmarking

MG-GNN: Multigrid Graph Neural Networks for Learning Multilevel Domain Decomposition Methods

1 code implementation26 Jan 2023 Ali Taghibakhshi, Nicolas Nytko, Tareq Uz Zaman, Scott MacLachlan, Luke Olson, Matthew West

Domain decomposition methods (DDMs) are popular solvers for discretized systems of partial differential equations (PDEs), with one-level and multilevel variants.

Learning Interface Conditions in Domain Decomposition Solvers

1 code implementation19 May 2022 Ali Taghibakhshi, Nicolas Nytko, Tareq Zaman, Scott MacLachlan, Luke Olson, Matthew West

Domain decomposition methods are widely used and effective in the approximation of solutions to partial differential equations.

Optimization-Based Algebraic Multigrid Coarsening Using Reinforcement Learning

1 code implementation NeurIPS 2021 Ali Taghibakhshi, Scott MacLachlan, Luke Olson, Matthew West

A system of linear equations defines a graph on the set of unknowns and each level of a multigrid solver requires the selection of an appropriate coarse graph along with restriction and interpolation operators that map to and from the coarse representation.

reinforcement-learning Reinforcement Learning (RL)

Learning with Analytical Models

no code implementations28 Oct 2018 Huda Ibeid, Siping Meng, Oliver Dobon, Luke Olson, William Gropp

To understand and predict the performance of scientific applications, several analytical and machine learning approaches have been proposed, each having its advantages and disadvantages.

BIG-bench Machine Learning

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