Spectropolarimetric observations are broadly used for the extraction of physical information in the field of solar physics. Inferring magnetic and thermodynamic information from these observations includes inversion problem solving. Assuming that spectropolarimetric profiles are produced by a given atmospheric model, it is required to find the best sets of parameters within such a model corresponding to particular observations. Standard optimization approach often requires large computational resources and even in this case still performs very slowly. Previously it was suggested to use different strategies with artificial neural networks to overcome problems with computational power. It was previously shown that neural networks could be a viable alternative to the standard least square approach, but they could not replace it. Most papers only cover Magnetic Fields Vector parameter inferring, whereas the commonly used solar atmosphere model includes 11 parameters. In this paper we provide an end-to-end deep learning framework for full parameter inferring as well as comparison of several approaches for multi-output predictions. For this purpose, we trained one common network to predict all parameters, a set of parameter-oriented independent networks to deal with each parameter, and finally a combination of the above: a set of parameter-oriented independent networks built upon several layers of the pretrained common network. Our results show that using a partly independent network built upon a pretrained network provides the best results and demonstrates better generalization performance.

Original languageEnglish
Title of host publicationAdvances in Neural Computation, Machine Learning, and Cognitive Research 5 - Selected Papers from the 23rd International Conference on Neuroinformatics, 2021
EditorsBoris Kryzhanovsky, Witali Dunin-Barkowski, Vladimir Redko, Yury Tiumentsev, Valentin V. Klimov
PublisherSpringer Nature
Pages299-307
Number of pages9
ISBN (Print)9783030915803
DOIs
StatePublished - 2021
Event23rd International Conference on Neuroinformatics, 2021 - Moscow, Russian Federation
Duration: 18 Oct 202122 Oct 2021

Publication series

NameStudies in Computational Intelligence
Volume1008 SCI
ISSN (Print)1860-949X
ISSN (Electronic)1860-9503

Conference

Conference23rd International Conference on Neuroinformatics, 2021
Country/TerritoryRussian Federation
CityMoscow
Period18/10/2122/10/21

    Scopus subject areas

  • Artificial Intelligence

    Research areas

  • Deep learning, Inverse problem, Magnetic fields, Multi-task learning, Spectral lines

ID: 92451072