Published on Sat Aug 24 2019

Accelerating small-angle scattering experiments with simulation-based machine learning

Takuya Kanazawa, Akinori Asahara, Hidekazu Morita

Making material experiments more efficient is a high priority for materialsscientists. We propose two methods for optimizing sequential data sampling. The proposed methods significantly outperform baselines.

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Abstract

Making material experiments more efficient is a high priority for materials scientists who seek to discover new materials with desirable properties. In this paper, we investigate how to optimize the laborious sequential measurements of materials properties with data-driven methods, taking the small-angle neutron scattering (SANS) experiment as a test case. We propose two methods for optimizing sequential data sampling. These methods iteratively suggest the best target for the next measurement by performing a statistical analysis of the already acquired data, so that maximal information is gained at each step of an experiment. We conducted numerical simulations of SANS experiments for virtual materials and confirmed that the proposed methods significantly outperform baselines.