Advances on Active Learning for Efficient Global Optimization of Atomic Clusters

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Details
  • Presentation type: Apresentação Oral Síncrona / Synchronous Oral Communication
  • Track: Development and/or implementation of Method/Theory
  • Keywords: Machine Learning; Bayesian optimization; Active learning; Global optimization;
  • 1 Universidade Federal do Espírito Santo, Brazil
  • 2 University of Calgary
  • 3 Departamento de Química / CINVESTAV
  • 4 National Research Council of Canada

Advances on Active Learning for Efficient Global Optimization of Atomic Clusters

Maicon Lourenço

Universidade Federal do Espírito Santo, Brazil

Abstract

In this work, we will discuss the progress of the QMLMaterial software for efficient global optimization (GO) of atomic cluster and/or spin multiplicity (SM) by means of the active learning (AL) method. The method was applied for the GO of Na20 and 3Al@Si11 atomic clusters. The local optimization of the structures was done using SCC-DFTB and DFT, respectively. For the 3Al@Si11, the doped configurations and the SMs (2, 4, 6) were considered during the search. The Gaussian Process (GP) and Neural Network (NN) algorithms were used with the MBTR structural descriptor in the proposed method.

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