Sparse Gaussian process potentials: Application to lithium diffusivity in superionic conducting solid electrolytes
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- Sparse Gaussian process potentials: Application to lithium diffusivity in superionic conducting solid electrolytes
- Hajibabaei, Amir; Myung, Chang Woo; Kim, Kwang S.
- Issue Date
- AMER PHYSICAL SOC
- PHYSICAL REVIEW B, v.103, no.21, pp.214102
- For machine learning of interatomic potentials a scalable sparse Gaussian process regression formalism is introduced with a data-efficient on-the-fly adaptive sampling algorithm. With this approach, the computational cost is effectively reduced to those of the Bayesian linear regression methods while maintaining the appealing characteristics of the exact Gaussian process regression. As a showcase, experimental melting and glass-crystallization temperatures are reproduced for Li7P3S11, Li diffusivity is simulated, and an unchartered phase is revealed with much lower Li diffusivity which should be circumvented.
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