Model Order Reduction of Cardiac Monodomain Model using Deep Autoencoder Based Neural Networks

Authors

  • Riasat Khan Department of Electrical and Computer Engineering, North South University, Dhaka, Bangladesh
  • Kwong T. Ng Department of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM 88003, USA

Keywords:

Autoencoder, Cardiac monodomain model, deep learning technique, dynamic mode decomposition, proper orthogonal decomposition, reduced order modeling, semi-implicit scheme

Abstract

The numerical study of electrocardiology involves prohibitive computational costs because of its complex and nonlinear dynamics. In this paper, a lowdimensional model of the cardiac monodomain formulation has been developed by using the deep learning method. The restricted Boltzmann machine and deep autoencoder machine learning techniques have been used to approximate the cardiac tissue’s full order dynamics. The proposed reduced order modeling begins with the development of the low-dimensional representations of the original system by implementing the neural networks from the numerical simulations of the full order monodomain system. Consequently, the reduced order representations have been utilized to construct the lower-dimensional model, and finally, it has been reconstructed back to the original system. Numerical results show that, the proposed deep learning MOR framework gained computational efficiency by a factor of 85 with acceptable accuracy. This paper compares the accuracy of the deep learning based model order reduction method with the two different techniques of model reduction: proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD). The model order reduction deploying the deep learning method outperforms the POD and DMD concerning the modeling accuracy.

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Author Biographies

Riasat Khan, Department of Electrical and Computer Engineering, North South University, Dhaka, Bangladesh

Riasat Khan is an Assistant Professor of the Electrical and Computer Engineering Department at North South University, Bangladesh. He obtained his M.S. and Ph.D. degrees in Electrical Engineering from New Mexico State University, Las Cruces, NM. His research interests include cardiac electrophysiology, bioelectromagnetics, computational electromagnetics, model order reduction, and power electronics.

Kwong T. Ng, Department of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM 88003, USA

Kwong T. Ng is a Professor of the Electrical and Computer Engineering department at New Mexico State University, Las Cruces, NM. He received the M.S. and Ph.D. degrees from The Ohio State University, Columbus, in 1981 and 1985, respectively. His current research interests include bioelectromagnetics, computational electromagnetics, and biomedical instrumentation.

References

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Published

2021-10-21

How to Cite

Khan, R. ., & Ng, K. T. . (2021). Model Order Reduction of Cardiac Monodomain Model using Deep Autoencoder Based Neural Networks. The Applied Computational Electromagnetics Society Journal (ACES), 36(08), 1120–1124. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/11827

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