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SUMMARY:Scientific machine learning for electromagnetic field computations
DESCRIPTION:Abstract:\nA recent report by the US Department of Energy defines the area of scientific machine learning as “a core component of artificial intelligence (AI) and a computational technology that can be trained\, with scientific data\, to augment or automate human skills”\, which has “the potential to transform science and energy research”. In this presentation\, we discuss the potential of scientific machine learning methods to problems in computational electromagnetics starting from standard electromagnetic structure analysis and multi-physics modeling in the time-domain\, employing an unsupervised learning strategy based on Physics-Informed Neural Networks (PINN). PINNs directly integrate physical laws into their loss function\, so that the training process does not rely on the generation of training ground truth data from simulations. We demonstrate the unconditionally stable solution of coupled electromagnetic-thermal problems based on PINNs and introduce a physics-informed deep-operator-network (PI-DON) for the unconditionally stable solution of Maxwell’s equations. We show applications of the PI-DON to the analysis\, design and uncertainty quantification study of finite and defect periodic structures\, including frequency selective surfaces and metasurfaces\, demonstrating significant computational efficiency gains with respect to the conventional finite-difference time-domain technique (FDTD)\, including training time of the neural network.\nMoreover\, we demonstrate the impact of machine learning on the computational modeling of radiowave propagation scenarios. We build convolutional neural network models that can process the geometry of indoor environments\, along with physics-inspired parameters\, to rapidly estimate received signal strength (RSS) maps. Emphasis is placed on the generalizability of these models\, which is their ability to "learn" the physics of radiowave propagation and produce accurate modeling predictions in new geometries well beyond those included in their training set.\nSpeaker(s): Costas Sarris\nVirtual: https://events.vtools.ieee.org/m/583371
URL:https://reg6-stg.ieee.org/event/scientific-machine-learning-for-electromagnetic-field-computations-2/
LOCATION:Virtual: https://events.vtools.ieee.org/m/583371
CATEGORIES:Local Events
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