The duality between particle methods and artificial neural networks
Alexiadis, A. and Simmons, M. J. H. and Stamatopoulos, K. and Batchelor, H. K. and Moulitsas, I. (2020) The duality between particle methods and artificial neural networks. Scientific Reports, 10 (1). 16247. ISSN 2045-2322 (https://doi.org/10.1038/s41598-020-73329-0)
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Abstract
The algorithm behind particle methods is extremely versatile and used in a variety of applications that range from molecular dynamics to astrophysics. For continuum mechanics applications, the concept of ‘particle’ can be generalized to include discrete portions of solid and liquid matter. This study shows that it is possible to further extend the concept of ‘particle’ to include artificial neurons used in Artificial Intelligence. This produces a new class of computational methods based on ‘particle-neuron duals’ that combines the ability of computational particles to model physical systems and the ability of artificial neurons to learn from data. The method is validated with a multiphysics model of the intestine that autonomously learns how to coordinate its contractions to propel the luminal content forward (peristalsis). Training is achieved with Deep Reinforcement Learning. The particle-neuron duality has the advantage of extending particle methods to systems where the underlying physics is only partially known, but we have observations that allow us to empirically describe the missing features in terms of reward function. During the simulation, the model evolves autonomously adapting its response to the available observations, while remaining consistent with the known physics of the system.
ORCID iDs
Alexiadis, A., Simmons, M. J. H., Stamatopoulos, K., Batchelor, H. K. ORCID: https://orcid.org/0000-0002-8729-9951 and Moulitsas, I.;-
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Item type: Article ID code: 74222 Dates: DateEvent1 December 2020Published14 September 2020AcceptedSubjects: Medicine > Therapeutics. Pharmacology
Science > Mathematics > Electronic computers. Computer scienceDepartment: Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical Sciences Depositing user: Pure Administrator Date deposited: 13 Oct 2020 08:34 Last modified: 31 Oct 2024 01:51 URI: https://strathprints.strath.ac.uk/id/eprint/74222