Search Results for author: Joshua A. Vita

Found 3 papers, 0 papers with code

LTAU-FF: Loss Trajectory Analysis for Uncertainty in Atomistic Force Fields

no code implementations1 Feb 2024 Joshua A. Vita, Amit Samanta, Fei Zhou, Vincenzo Lordi

Model ensembles are effective tools for estimating prediction uncertainty in deep learning atomistic force fields.

Uncertainty Quantification

Spline-based neural network interatomic potentials: blending classical and machine learning models

no code implementations4 Oct 2023 Joshua A. Vita, Dallas R. Trinkle

While machine learning (ML) interatomic potentials (IPs) are able to achieve accuracies nearing the level of noise inherent in the first-principles data to which they are trained, it remains to be shown if their increased complexities are strictly necessary for constructing high-quality IPs.

Data efficiency and extrapolation trends in neural network interatomic potentials

no code implementations12 Feb 2023 Joshua A. Vita, Daniel Schwalbe-Koda

In this work, we show how architectural and optimization choices influence the generalization of NNIPs, revealing trends in molecular dynamics (MD) stability, data efficiency, and loss landscapes.

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