Search Results for author: Alexandre Adam

Found 5 papers, 1 papers with code

Bayesian Imaging for Radio Interferometry with Score-Based Priors

no code implementations29 Nov 2023 Noe Dia, M. J. Yantovski-Barth, Alexandre Adam, Micah Bowles, Pablo Lemos, Anna M. M. Scaife, Yashar Hezaveh, Laurence Perreault-Levasseur

The inverse imaging task in radio interferometry is a key limiting factor to retrieving Bayesian uncertainties in radio astronomy in a computationally effective manner.

Astronomy Radio Interferometry

Pixelated Reconstruction of Foreground Density and Background Surface Brightness in Gravitational Lensing Systems using Recurrent Inference Machines

no code implementations10 Jan 2023 Alexandre Adam, Laurence Perreault-Levasseur, Yashar Hezaveh, Max Welling

In this work, we use a neural network based on the Recurrent Inference Machine (RIM) to simultaneously reconstruct an undistorted image of the background source and the lens mass density distribution as pixelated maps.

Posterior samples of source galaxies in strong gravitational lenses with score-based priors

no code implementations7 Nov 2022 Alexandre Adam, Adam Coogan, Nikolay Malkin, Ronan Legin, Laurence Perreault-Levasseur, Yashar Hezaveh, Yoshua Bengio

Inferring accurate posteriors for high-dimensional representations of the brightness of gravitationally-lensed sources is a major challenge, in part due to the difficulties of accurately quantifying the priors.

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