Search Results for author: Fred Moolekamp

Found 3 papers, 2 papers with code

Hybrid Physical-Deep Learning Model for Astronomical Inverse Problems

no code implementations9 Dec 2019 Francois Lanusse, Peter Melchior, Fred Moolekamp

We present a Bayesian machine learning architecture that combines a physically motivated parametrization and an analytic error model for the likelihood with a deep generative model providing a powerful data-driven prior for complex signals.

BIG-bench Machine Learning

SCARLET: Source separation in multi-band images by Constrained Matrix Factorization

4 code implementations27 Feb 2018 Peter Melchior, Fred Moolekamp, Maximilian Jerdee, Robert Armstrong, Ai-Lei Sun, James Bosch, Robert Lupton

We present the source separation framework SCARLET for multi-band images, which is based on a generalization of the Non-negative Matrix Factorization to alternative and several simultaneous constraints.

Instrumentation and Methods for Astrophysics

Block-Simultaneous Direction Method of Multipliers: A proximal primal-dual splitting algorithm for nonconvex problems with multiple constraints

3 code implementations30 Aug 2017 Fred Moolekamp, Peter Melchior

We introduce a generalization of the linearized Alternating Direction Method of Multipliers to optimize a real-valued function $f$ of multiple arguments with potentially multiple constraints $g_\circ$ on each of them.

Hyperspectral Unmixing

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