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STRIDE

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Systematic Techniques for Robust Inference and Data-driven Explainable closures...

Systematic Techniques for Robust Inference and Data-driven Explainable closures for plasma physics Plasma physics has seen a long tradition of deriving simplified models such as magnetohydrodynamics through a process known as closure: starting from computationally demanding kinetics and following various analytical approximate... ver más

31/08/2026

KU Leuven

176K€

Presupuesto del proyecto: 176K€

Líder del proyecto

KATHOLIEKE UNIVERSITEIT LEUVEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2024-04-08

HORIZON-MSCA-2023-PF-01-01: MSCA Postdoctoral Fellowships 2023 ExpectedOutcome:Project results are expected to contribute to the following outcomes:

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KU Leuven

175.92K€ | Lider

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Duración del proyecto: 28 meses Fecha Inicio: 2024-04-08
Fecha Fin: 2026-08-31

Líder del proyecto

KATHOLIEKE UNIVERSITEIT LEUVEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 176K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Plasma physics has seen a long tradition of deriving simplified models such as magnetohydrodynamics through a process known as closure: starting from computationally demanding kinetics and following various analytical approximate schemes resulting in fluid-type models which are less accurate but more tractable. Due to smaller computational footprint these models have found applications in space weather modelling and fusion. The problem is that in many interesting applications, e.g. where collisions between particles are rare, the analytic closures have limitations. The goal of STRIDE (Systematic Techniques for Robust Inference and Data-driven Explainable closures for plasma) is to use machine learning to construct models with fewer degrees of freedom that describe kinetic processes relevant for Geospace Environmental Modelling (GEM), such as magnetic reconnection. Corrections to fluid-type models will be learned with deep neural networks and equation discovery and tested in numerical simulations. The important challenge involves understanding how such surrogates can be made robust against out-of-distribution shifts (i.e. different physical conditions) and numerical instabilities. Thus the closures will be first trained on data generated by high fidelity physics-based model, e.g. kinetic Particle-in-Cell simulations, for a specific set of parameters and then transfer learning will be applied to a different set of parameters to improve robustness. Uncertainty quantification and the ability to generate extremes will be investigated. The scientific question to be addressed here include: how can we interpret the trained models using explainable AI, what are the optimal ways of performing transfer learning and fine-tuning on the observational data, are there physical considerations (such as conservation laws or symmetries) that can reduce the costs associated with training such machine learning models? Trained models will be made open-source to foster research.

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