Uncertainty quantification of machine learning potentials for atomistic simulation

Weirong Xiao, Yumeng Li, Pingfeng Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Atomistic simulation plays a growing important role in material design and analysis, owing to accurate first principles methods that are free from empirical parameters and phenomelogical models. As the successful implementation of atomistic material simulations largely depends on the availability of efficient and accurate force field potentials, machine learning interpolation of interatomic potential energy surfaces has been developed in recent years due to its ourstanding performance in enabling automatic construction of highly accurate atomic interaction potentials. These methods circumvent the parameterization problem in conventional empirical potentials by employing machine learning techniques to interpolate the first principle potential energy surface based on a set of reference calculations. Despite the advantages such as a well automated process and high flexibility of model functions, the uncertainty involved in the machine learning interpolated atomic potential energy surface has not been investigated. In this paper, the uncertainty quantification study is performened for the machine learning interpolated atomic potential for titanium dioxide (TiO2), an industrially relevant and well-studies material.

Original languageEnglish (US)
Title of host publicationAIAA Non-Deterministic Approaches
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Edition209969
ISBN (Print)9781624105296
DOIs
StatePublished - 2018
EventAIAA Non-Deterministic Approaches Conference, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Non-Deterministic Approaches Conference, 2018
Number209969

Other

OtherAIAA Non-Deterministic Approaches Conference, 2018
Country/TerritoryUnited States
CityKissimmee
Period1/8/181/12/18

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Architecture
  • Mechanics of Materials

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