Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BP11: Poster Session I: In-Person, Hall A (9:30-11:00am) and Virtual Poster Presentations (11:15am-12:30pm)
MFE: Analytical,computational; Energetic Particles; Disruptions; Power Handling
ICF: Z-Pinch; MagnetoInertial Fusion; Hydrodynamics; Indirect drive
9:30 AM - 12:30 PM
Monday, October 17, 2022
Room: Exhibit Hall A and Online
Abstract: BP11.00002 : Active learning pipeline for surrogate models of gyrokinetic turbulence
Presenter:
Aaron Ho
(DIFFER)
Authors:
Jackson Burr
(UCL)
Thandikire Madula
(UCL)
Lorenzo Zanisi
(UKAEA)
Aaron Ho
(DIFFER)
Jonathan Citrin
(DIFFER)
Vignesh Gopakumar
(UKAEA)
Stanislas Pamela
(UKAEA)
Collaboration:
JET contributors
This study proposes an active learning (AL) method which uses output uncertainties to identify regions where additional data would improve the NN. A subset of the 15D dataset was used to train initial uncertainty-aware turbulent flux regression NNs and stable region classification NNs. New points for subsequent retraining iterations were selected via the NN uncertainties. A factor 250 data reduction was achieved while retaining an equivalent NN MSE. Further tests in integrated models are planned. This method shows promise in applicability to more accurate gyrokinetic simulations.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700