Machine-learning Prediction of Infrared Spectra of Interstellar Polycyclic Aromatic Hydrocarbons

  title={Machine-learning Prediction of Infrared Spectra of Interstellar Polycyclic Aromatic Hydrocarbons},
  author={P{\'e}ter Kov{\'a}cs and Xiaosi Zhu and Jes{\'u}s Carrete and Georg K. H. Madsen and Zhao Wang},
  journal={arXiv: Astrophysics of Galaxies},
  • P. Kovács, Xiaosi Zhu, +2 authors Zhao Wang
  • Published 19 October 2020
  • Physics
  • arXiv: Astrophysics of Galaxies
We design and train a neural network (NN) model to efficiently predict the infrared spectra of interstellar polycyclic aromatic hydrocarbons (PAHs) with a computational cost many orders of magnitude lower than what a first-principles calculation would demand. The input to the NN is based on the Morgan fingerprints extracted from the skeletal formulas of the molecules and does not require precise geometrical information such as interatomic distances. The model shows excellent predictive skill… Expand
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