1 code implementation • 2 Nov 2023 • Andrea Roncoli, Aleksandra Ćiprijanović, Maggie Voetberg, Francisco Villaescusa-Navarro, Brian Nord
Deep learning models have been shown to outperform methods that rely on summary statistics, like the power spectrum, in extracting information from complex cosmological data sets.
1 code implementation • 17 Nov 2022 • Egor Danilov, Aleksandra Ćiprijanović, Brian Nord
A baseline approach to these tasks is to interpolate a time series with a Damped Random Walk (DRW) model, in which the spectrum is inferred using Maximum Likelihood Estimation (MLE).
1 code implementation • 1 Nov 2022 • Aleksandra Ćiprijanović, Ashia Lewis, Kevin Pedro, Sandeep Madireddy, Brian Nord, Gabriel N. Perdue, Stefan M. Wild
For the first time, we demonstrate the successful use of domain adaptation on two very different observational datasets (from SDSS and DECaLS).
1 code implementation • 7 Jul 2022 • Dimitrios Tanoglidis, Aleksandra Ćiprijanović, Alex Drlica-Wagner
Measuring the structural parameters (size, total brightness, light concentration, etc.)
no code implementations • 15 Mar 2022 • Cora Dvorkin, Siddharth Mishra-Sharma, Brian Nord, V. Ashley Villar, Camille Avestruz, Keith Bechtol, Aleksandra Ćiprijanović, Andrew J. Connolly, Lehman H. Garrison, Gautham Narayan, Francisco Villaescusa-Navarro
Methods based on machine learning have recently made substantial inroads in many corners of cosmology.
no code implementations • 28 Dec 2021 • Aleksandra Ćiprijanović, Diana Kafkes, Gregory Snyder, F. Javier Sánchez, Gabriel Nathan Perdue, Kevin Pedro, Brian Nord, Sandeep Madireddy, Stefan M. Wild
On the other hand, we show that training with domain adaptation improves model robustness and mitigates the effects of these perturbations, improving the classification accuracy by 23% on data with higher observational noise.
1 code implementation • 24 Nov 2020 • Dimitrios Tanoglidis, Aleksandra Ćiprijanović, Alex Drlica-Wagner
We take advantage of the fact that, for the first time, we have available a large number of labeled LSBGs and artifacts from the Dark Energy Survey, that we use to train, validate, and test a CNN model.