Search Results for author: Aleksandra Ćiprijanović

Found 7 papers, 5 papers with code

Domain Adaptive Graph Neural Networks for Constraining Cosmological Parameters Across Multiple Data Sets

1 code implementation2 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.

Unsupervised Domain Adaptation

Neural Inference of Gaussian Processes for Time Series Data of Quasars

1 code implementation17 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).

Gaussian Processes Time Series +1

DeepAdversaries: Examining the Robustness of Deep Learning Models for Galaxy Morphology Classification

no code implementations28 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.

Domain Adaptation Image Compression +1

DeepShadows: Separating Low Surface Brightness Galaxies from Artifacts using Deep Learning

1 code implementation24 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.

Transfer Learning

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