Active Learning Driven Machine Learning Inter-Atomic Potentials Generation: A Case Study for Hafnium dioxide

ORAL

Abstract

We propose a novel active learning scheme to automate the configuration selection to fit the Gaussian Approximation Potential (GAP). The proposed scheme consists of an unsupervised active sampler coupled to a Bayesian optimization to evaluate the GAP model. We apply this scheme to abintio molecule dynamics trajectories of Hafnium dioxide. We will show that this scheme leads to a much lower number of training configuration that arrives at near abintio energy fit accuracy as evaluated by an error metric. With the active learned GAP model, we performed molecule dynamics (MD) simulation. We show that the MD simulation calculated x-ray structural factors are in the good agreement with experiments.

*Argonne National Laboratory's work was supported by the U.S. Department of Energy, Office of Science, under contract DE-AC02-06CH11357.

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Presenters

  • Ganesh Sivaraman

    • Argonne Leadership Computing Facility, Argonne National Laboratory

Authors

  • Ganesh Sivaraman

    • Argonne Leadership Computing Facility, Argonne National Laboratory

  • Anand Narayanan Krishnamoorthy

    • Institute for Computational Physics, University of Stuttgart

  • Matthias Baur

    • Institute for Computational Physics, University of Stuttgart

  • Christian L. Holm

    • Physics, University of stuttgart
    • Institute for Computational Physics, University of Stuttgart

  • Marius Stan

    • Applied Materials Division, Argonne National Laboratory

  • Gábor Csányi

    • Department of Engineering, University of Cambridge

  • Chris Benmore

    • X-ray Science Division, Argonne National Laboratory

  • Alvaro Vazquez-Mayagoitia

    • Argonne Leadership Computing Facility, Argonne National Laboratory
    • Argonne National Lab
    • Computational Science Division, Argonne National Laboratory