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September 26, 2019Computer Physics Communications831 citationsOpen Access

DScribe: Library of descriptors for machine learning in materials science

LHLauri HimanenMJMarc O. J. JägerEMEiaki V. Morooka

Key Points

  • The aim is to provide a library of descriptors to enhance machine learning applications in materials science.
  • Developed a library of common descriptors for materials science.
  • Provided implementations for various feature transformations including Coulomb matrix and SOAP.
  • Maintained a Python interface with performance-optimized code in C/C++. ”],
  • The DScribe package provides user-friendly implementations for multiple feature transformations.
  • Demonstrated applications include formation energy prediction and ionic charge prediction in organic molecules.
  • The software accelerates machine learning applications in atomistic simulations.

Abstract

DScribe is a software package for machine learning that provides popular feature transformations (“descriptors”) for atomistic materials simulations. DScribe accelerates the application of machine learning for atomistic property prediction by providing user-friendly, off-the-shelf descriptor implementations. The package currently contains implementations for Coulomb matrix, Ewald sum matrix, sine matrix, Many-body Tensor Representation (MBTR), Atom-centered Symmetry Function (ACSF) and Smooth Overlap of Atomic Positions (SOAP). Usage of the package is illustrated for two different applications: formation energy prediction for solids and ionic charge prediction for atoms in organic molecules. The package is freely available under the open-source Apache License 2.0. Program Title: DScribe Program Files doi: http://dx.doi.org/10.17632/vzrs8n8pk6.1 Licensing provisions: Apache-2.0 Programming language: Python/C/C++ Supplementary material: Supplementary Information as PDF Nature of problem: The application of machine learning for materials science is hindered by the lack of consistent software implementations for feature transformations. These feature transformations, also called descriptors, are a key step in building machine learning models for property prediction in materials science. Solution method: We have developed a library for creating common descriptors used in machine learning applied to materials science. We provide an implementation the following descriptors: Coulomb matrix, Ewald sum matrix, sine matrix, Many-body Tensor Representation (MBTR), Atom-centered Symmetry Functions (ACSF) and Smooth Overlap of Atomic Positions (SOAP). The library has a python interface with computationally intensive routines written in C or C++. The source code, tutorials and documentation are provided online. A continuous integration mechanism is set up to automatically run a series of regression tests and check code coverage when the codebase is updated.

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Cite This Study

Himanen et al. (2019) studied this question.

synapsesocial.com/papers/69d91dd734ded318bb6840b2https://doi.org/10.1016/j.cpc.2019.106949
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