Search Results for author: Victor Churchill

Found 7 papers, 0 papers with code

Flow Map Learning for Unknown Dynamical Systems: Overview, Implementation, and Benchmarks

no code implementations20 Jul 2023 Victor Churchill, Dongbin Xiu

Flow map learning (FML), in conjunction with deep neural networks (DNNs), has shown promises for data driven modeling of unknown dynamical systems.

Sub-aperture SAR Imaging with Uncertainty Quantification

no code implementations25 Aug 2022 Victor Churchill, Anne Gelb

As proposed, the method was not well-suited for large problems, however, as the sampling was inefficient.

Uncertainty Quantification

Learning Fine Scale Dynamics from Coarse Observations via Inner Recurrence

no code implementations3 Jun 2022 Victor Churchill, Dongbin Xiu

Recent work has focused on data-driven learning of the evolution of unknown systems via deep neural networks (DNNs), with the goal of conducting long term prediction of the dynamics of the unknown system.

Deep Learning of Chaotic Systems from Partially-Observed Data

no code implementations12 May 2022 Victor Churchill, Dongbin Xiu

A distinct feature of chaotic systems is that even the smallest perturbations will lead to large (albeit bounded) deviations in the solution trajectories.

Robust Modeling of Unknown Dynamical Systems via Ensemble Averaged Learning

no code implementations7 Mar 2022 Victor Churchill, Steve Manns, Zhen Chen, Dongbin Xiu

In the proposed ensemble averaging method, multiple models are independently trained and model predictions are averaged at each time step.

Stochastic Optimization

Deep Neural Network Modeling of Unknown Partial Differential Equations in Nodal Space

no code implementations7 Jun 2021 Zhen Chen, Victor Churchill, Kailiang Wu, Dongbin Xiu

Consequently, a trained DNN defines a predictive model for the underlying unknown PDE over structureless grids.

Estimation and uncertainty quantification for piecewise smooth signal recovery

no code implementations17 Jul 2020 Victor Churchill, Anne Gelb

This expands the class of problems available to Bayesian learning to include, e. g., inverse problems dealing with the recovery of piecewise smooth functions or signals from data.

Uncertainty Quantification

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