Search Results for author: Oliver Hahn

Found 7 papers, 2 papers with code

A deep learning framework for jointly extracting spectra and source-count distributions in astronomy

no code implementations6 Jan 2024 Florian Wolf, Florian List, Nicholas L. Rodd, Oliver Hahn

Astronomical observations typically provide three-dimensional maps, encoding the distribution of the observed flux in (1) the two angles of the celestial sphere and (2) energy/frequency.

Astronomy

Stochastic Super-resolution of Cosmological Simulations with Denoising Diffusion Models

no code implementations10 Oct 2023 Andreas Schanz, Florian List, Oliver Hahn

In recent years, deep learning models have been successfully employed for augmenting low-resolution cosmological simulations with small-scale information, a task known as "super-resolution".

Denoising Super-Resolution +1

Adaptive Generalization for Semantic Segmentation

no code implementations29 Sep 2021 Sherwin Bahmani, Oliver Hahn, Eduard Sebastian Zamfir, Nikita Araslanov, Stefan Roth

In this work, we empirically study an adaptive inference strategy for semantic segmentation that adjusts the model to the test sample before producing the final prediction.

Segmentation Semantic Segmentation

Quantifying the impact of baryon-CDM perturbations on halo clustering and baryon fraction

no code implementations2 Nov 2020 Hasti Khoraminezhad, Titouan Lazeyras, Raul E. Angulo, Oliver Hahn, Matteo Viel

Using gravity-only 2-fluid simulations we assess the impact of such perturbations on the dark matter halos distribution.

Cosmology and Nongalactic Astrophysics

Unveiling the singular dynamics in the cosmic large-scale structure

1 code implementation2 Dec 2019 Cornelius Rampf, Uriel Frisch, Oliver Hahn

It is known that the gravitational collapse of cold dark matter leads to infinite-density caustics that seed the primordial dark-matter halos in the large-scale structure.

Cosmology and Nongalactic Astrophysics Adaptation and Self-Organizing Systems

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