Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Moolekamp, Fred"'
We present an extension of the multi-band galaxy fitting method scarlet which allows the joint modeling of astronomical images from different instruments, by performing simultaneous resampling and convolution. We introduce a fast and formally accurat
Externí odkaz:
http://arxiv.org/abs/2107.06984
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. This comb
Externí odkaz:
http://arxiv.org/abs/1912.03980
We implement the adaptive step size scheme from the optimization methods AdaGrad and Adam in a novel variant of the Proximal Gradient Method (PGM). Our algorithm, dubbed AdaProx, avoids the need for explicit computation of the Lipschitz constants or
Externí odkaz:
http://arxiv.org/abs/1910.10094
Autor:
Bosch, James, AlSayyad, Yusra, Armstrong, Robert, Bellm, Eric, Chiang, Hsin-Fang, Eggl, Siegfried, Findeisen, Krzysztof, Fisher-Levine, Merlin, Guy, Leanne P., Guyonnet, Augustin, Ivezić, Željko, Jenness, Tim, Kovács, Gábor, Krughoff, K. Simon, Lupton, Robert H., Lust, Nate B., MacArthur, Lauren A., Meyers, Joshua, Moolekamp, Fred, Morrison, Christopher B., Morton, Timothy D., O'Mullane, William, Parejko, John K., Plazas, Andrés A., Price, Paul A., Rawls, Meredith L., Reed, Sophie L., Schellart, Pim, Slater, Colin T., Sullivan, Ian, Swinbank, John. D., Taranu, Dan, Waters, Christopher Z., Wood-Vasey, W. M.
The Large Synoptic Survey Telescope (LSST) is an ambitious astronomical survey with a similarly ambitious Data Management component. Data Management for LSST includes processing on both nightly and yearly cadences to generate transient alerts, deep c
Externí odkaz:
http://arxiv.org/abs/1812.03248
Autor:
Melchior, Peter, Moolekamp, Fred, Jerdee, Maximilian, Armstrong, Robert, Sun, Ai-Lei, Bosch, James, Lupton, Robert
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. Our approach describes the observed scene as a
Externí odkaz:
http://arxiv.org/abs/1802.10157
Autor:
Moolekamp, Fred E., Mamajek, Eric E., James, David J., Luhman, Kevin L., Pecaut, Mark J., Metchev, Stanmir A., Bell, Cameron P. M., Denbo, Sara R.
Using images taken with the Dark Energy Camera (DECam), the first extensive survey of low mass and substellar objects is made in the 15-20 Myr Upper Centaurus Lupus (UCL) and Lower Centaurus Crux (LCC) subgroups of the Scorpius Centaurus OB Associati
Externí odkaz:
http://arxiv.org/abs/1802.00878
Autor:
Moolekamp, Fred, Melchior, Peter
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. The function $f$ may be nonconve
Externí odkaz:
http://arxiv.org/abs/1708.09066
Autor:
Moolekamp, Fred, Mamajek, Eric
Publikováno v:
Astronomy and Computing, Volume 13, November 2015, Pages 50-57
As the size of images and data products derived from astronomical data continues to increase, new tools are needed to visualize and interact with that data in a meaningful way. Motivated by our own astronomical images taken with the Dark Energy Camer
Externí odkaz:
http://arxiv.org/abs/1506.08930
Autor:
Scott, Erin L., Mamajek, Eric E., Pecaut, Mark J., Quillen, Alice C., Moolekamp, Fred, Bell, Cameron P. M.
We investigate the nature of the unusual eclipsing star OGLE LMC-ECL-11893 (OGLE J05172127-6900558) in the Large Magellanic Cloud recently reported by Dong et al. 2014. The eclipse period for this star is 468 days, and the eclipses exhibit a minimum
Externí odkaz:
http://arxiv.org/abs/1410.7678
Publikováno v:
Mod. Phys. Lett. A, 28, 1350139 (2013)
We study a model of scalar quantum field theory in which space-time is a discrete set of points obtained by repeatedly subdividing a triangle into three triangles at the centroid. By integrating out the field variable at the centroid we get a renorma
Externí odkaz:
http://arxiv.org/abs/1305.3322