Graph convolutional networks enable fast hemorrhagic stroke monitoring with electrical impedance tomography

no code implementations • 10 Dec 2024 • J. Toivanen, V. Kolehmainen, A. Paldanius, A. Hänninen, A. Hauptmann, S. J. Hamilton

Results: Post-processing the linear difference reconstructions through the graph U-net significantly improved the image quality, resulting in images comparable to, or better than, the time-intensive nonlinear reconstruction method (a few minutes vs. several hours).

Image Reconstruction

No Evidence for Orbital Clustering in the Extreme Trans-Neptunian Objects

no code implementations • 10 Feb 2021 • K. J. Napier, D. W. Gerdes, Hsing Wen Lin, S. J. Hamilton, G. M. Bernstein, P. H. Bernardinelli, T. M. C. Abbott, M. Aguena, J. Annis, S. Avila, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, J. De Vicente, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, P. Fosalba, J. García Bellido, D. Gruen, R. A. Gruendl, G. Gutierrez, D. L. Hollowood, K. Honscheid, B. Hoyle, D. J. James, S. Kent, K. Kuehn, N. Kuropatkin, M. A. G. Maia, F. Menanteau, R. Miquel, R. Morgan, A. Palmese, F. Paz-Chinchón, A. A. Plazas, E. Sanchez, V. Scarpine, S. Serrano, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, C. To, A. R. Walker, R. D. Wilkinson

The apparent clustering in longitude of perihelion $\varpi$ and ascending node $\Omega$ of extreme trans-Neptunian objects (ETNOs) has been attributed to the gravitational effects of an unseen 5-10 Earth-mass planet in the outer solar system.

Selection bias Earth and Planetary Astrophysics

Beltrami-Net: Domain Independent Deep D-bar Learning for Absolute Imaging with Electrical Impedance Tomography (a-EIT)

no code implementations • 30 Nov 2018 • S. J. Hamilton, A. Hänninen, A. Hauptmann, V. Kolehmainen

This allows the training data to be boundary shape independent.

Image Reconstruction