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Local Bayesian optimizer for atomic structures

delete2019-09-05
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OA
AI
E
Estefanía Garijo del Río *
J
Jens Jørgen Mortensen
K
Karsten W. Jacobsen
DOI:10.1103/PhysRevB.100.104103delete
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Abstract

Abstract

En 中文
A local optimization method based on Bayesian Gaussian processes is developed and applied to atomic structures. The method is applied to a variety of systems including molecules, clusters, bulk materials, and molecules at surfaces. The approach is seen to compare favorably to standard optimization algorithms like the conjugate gradient or Broyden-Fletcher-Goldfarb-Shanno in all cases. The method relies on prediction of surrogate potential energy surfaces, which are fast to optimize, and which are gradually improved as the calculation proceeds. The method includes a few hyperparameters, the optimization of which may lead to further improvements of the computational speed.
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Journal

Physical Review B cover
Physical Review B
IF:
3.7
Papers:
15.4W
Citations:
41.0W

Organization

T
technical university of denmark
Scholars:
2.6W
Papers: 2.8W
Citations: 37