Cited by 91Machine Learning in Materials ScienceAdvanced Chemical Physics StudiesNeural Networks and Applications

Analyzing machine learning models to accelerate generation of fundamental materials insights

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Umehara, Mitsutaro, Stein, Helge S., Guevarra, Dan, Newhouse, Paul F., Boyd, David A., Gregoire, John M.·2019·npj Computational Materials

Abstract

Machine learning for materials science envisions the acceleration of basic science research through automated identification of key data relationships to augment human interpretation and gain scientific understanding. A primary role of scientists is extraction of fundamental knowledge from data, and we demonstrate that this extraction can be accelerated using neural networks via analysis of the trained data model itself rather than its application as a prediction tool. Convolutional neural networks excel at modeling complex data relationships in multi-dimensional parameter spaces, such as that mapped by a combinatorial materials science experiment. Measuring a performance metric in a given materials space provides direct information about (locally) optimal materials but not the underlying materials science that gives rise to the variation in performance. By building a model that predicts performance (in this case photoelectrochemical power generation of a solar fuels photoanode) from materials parameters (in this case composition and Raman signal), subsequent analysis of gradients in the trained model reveals key data relationships that are not readily identified by human inspection or traditional statistical analyses. Human interpretation of these key relationships produces the desired fundamental understanding, demonstrating a framework in which machine learning accelerates data interpretation by leveraging the expertize of the human scientist. We also demonstrate the use of neural network gradient analysis to automate prediction of the directions in parameter space, such as the addition of specific alloying elements, that may increase performance by moving beyond the confines of existing data.

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  • Novel challenges for ML in materials science include coping with moderately sized datasets and inferring physical principles from trained models.

    “novel challenges for ML in materials science include coping with moderately sized datasets and inferring physical principles from trained models [800].”

    From Tackling climate change with machine learning (2023) · cites this paper as [800]

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  1. Jurafsky, D. & Martin, J. H. Speech and Language Processing: An Introduction to Natural Language Processing. In Computational Linguistics and Speech Recogni- tion (Pearson Education, London, 2000).
  2. Simonyan, K., Vedaldi, A. & Zisserman, A. Deep inside convolutional networks: visualising image classification models and saliency maps. http://arxiv.org/abs/ 1312.6034 (2013). Accessed 19 Apr 2014.

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Authors
Umehara, M., Stein, H. S., Guevarra, D., Newhouse, P. F., Boyd, D. A., & Gregoire, J. M.
Affiliations
California Institute of Technology (US)
Corresponding author
Gregoire, John M.
Venue
npj Computational Materials
Published
2019-03-08
Volume
5
Issue
1
ISSN
2057-3960 (ISSN-L)
OpenAlex
W2921711398
Cited by
91
References
51
Citations by year
2026: 2 · 2025: 7 · 2024: 8 · 2023: 15 · 2022: 18 · 2021: 14 · 2020: 18 · 2019: 9
FWCI
5.33
Type
journal article
Language
en
Open access
Locations
  • npj Computational Materials (publishedVersion, cc-by)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • DOE | SC | Basic Energy Sciences (DE-SC0004993)
  • An Accelerated Materials Design and Discovery grant from the Toyota Research Institute.
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Chemical Physics Studies
  • Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
Keywords
materials discovery, photoanodes, Raman spectroscopy, convolutional neural networks

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