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Machine Learning of Atomic-Scale Properties Based on Physical Principles

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Handbook of Materials Modeling

Abstract

We briefly summarize the kernel regression approach, as used recently in materials modeling, to fitting functions, particularly potential energy surfaces, and highlight how the linear algebra framework can be used to both predict and train from linear functionals of the potential energy, such as the total energy and atomic forces. We then give a detailed account of the smooth overlap of atomic position (SOAP) descriptor and kernel, showing how it arises from an abstract representation of smooth atomic densities and how it is related to several popular density-based descriptors of atomic structure. We also discuss recent generalizations that allow fine control of correlations between different atomic species, prediction, and fitting of tensorial properties and also how to construct structural kernels – applicable to comparing entire molecules or periodic systems – that go beyond an additive combination of local environments.

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Correspondence to Gábor Csányi .

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© 2018 Springer International Publishing AG, part of Springer Nature

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Ceriotti, M., Willatt, M.J., Csányi, G. (2018). Machine Learning of Atomic-Scale Properties Based on Physical Principles. In: Andreoni, W., Yip, S. (eds) Handbook of Materials Modeling . Springer, Cham. https://doi.org/10.1007/978-3-319-42913-7_68-1

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  • DOI: https://doi.org/10.1007/978-3-319-42913-7_68-1

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-42913-7

  • Online ISBN: 978-3-319-42913-7

  • eBook Packages: Springer Reference Physics and AstronomyReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics

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